Collection: Bearings - Single Row Ball - Unflanged

Bearings -> Single Row Ball -> Unflanged
ID (d) OD (D) Width (B) Inner Ring Width (Bn) Flange Diameter (DF) Flange Width (BF) Indicative
Image
Single Row Ball Bearings - 30x90x23 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
30.000
mm
+ 0.000 / - 0.011
(Equiv. 1.181 in.)
OD (D)
90.000
mm
+ 0.000 / - 0.015
(Equiv. 3.543 in.)
Width (B)
23.000
mm
+ 0.000 / - 0.120
(Equiv. 0.906 in.)
Single Row Ball Bearings - 30x90x23 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: 6406 (Each)
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 06, 2026
Regular price $65.86 AUD
Regular price $79.04 AUD Sale price $65.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
ID (d) OD (D) Width (B) Inner Ring Width (Bn) Indicative
Image
Single Row Ball Bearings - 30x90x23 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
30.000
mm
+ 0.000 / - 0.011
(Equiv. 1.181 in.)
OD (D)
90.000
mm
+ 0.000 / - 0.015
(Equiv. 3.543 in.)
Width (B)
23.000
mm
+ 0.000 / - 0.120
(Equiv. 0.906 in.)
Single Row Ball Bearings - 30x90x23 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: 6406 (Each)
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 06, 2026
Regular price $65.86 AUD
Regular price $79.04 AUD Sale price $65.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 30x90x23 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
30.000
mm
+ 0.000 / - 0.011
(Equiv. 1.181 in.)
OD (D)
90.000
mm
+ 0.000 / - 0.015
(Equiv. 3.543 in.)
Width (B)
23.000
mm
+ 0.000 / - 0.120
(Equiv. 0.906 in.)
Single Row Ball Bearings - 30x90x23 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: 6406-ZZ (Each)
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 06, 2026
Regular price $103.14 AUD
Regular price $123.76 AUD Sale price $103.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 30x90x23 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
30.000
mm
+ 0.000 / - 0.011
(Equiv. 1.181 in.)
OD (D)
90.000
mm
+ 0.000 / - 0.015
(Equiv. 3.543 in.)
Width (B)
23.000
mm
+ 0.000 / - 0.120
(Equiv. 0.906 in.)
Single Row Ball Bearings - 30x90x23 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: 6406-ZZ (Each)
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 06, 2026
Regular price $103.14 AUD
Regular price $123.76 AUD Sale price $103.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 30.15x39x6.5 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
39.000
mm

(Equiv. 1.535 in.)
Width (B)
6.500
mm

(Equiv. 0.256 in.)
Single Row Ball Bearings - 30.15x39x6.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR39-3015-CEP-45-2RS-ECO (Each)
16 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $15.41 AUD
Regular price Sale price $15.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 16 available can be backordered.
Single Row Ball Bearings - 30.15x39x6.5 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
39.000
mm

(Equiv. 1.535 in.)
Width (B)
6.500
mm

(Equiv. 0.256 in.)
Single Row Ball Bearings - 30.15x39x6.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR39-3015-CEP-45-2RS-ECO (Each)
16 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $15.41 AUD
Regular price Sale price $15.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

16 Available Now. Backorder if more than 16.
Single Row Ball Bearings - 30.15x41x6.5 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
41.000
mm

(Equiv. 1.614 in.)
Width (B)
6.500
mm

(Equiv. 0.256 in.)
Single Row Ball Bearings - 30.15x41x6.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR410-3015A-CEP-4536-2RB-ECO (Each)
11 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $8.68 AUD
Regular price Sale price $8.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 11 available can be backordered.
Single Row Ball Bearings - 30.15x41x6.5 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
41.000
mm

(Equiv. 1.614 in.)
Width (B)
6.500
mm

(Equiv. 0.256 in.)
Single Row Ball Bearings - 30.15x41x6.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR410-3015A-CEP-4536-2RB-ECO (Each)
11 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $8.68 AUD
Regular price Sale price $8.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

11 Available Now. Backorder if more than 11.
Single Row Ball Bearings - 30.15x41x6.5 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
41.000
mm

(Equiv. 1.614 in.)
Width (B)
6.500
mm

(Equiv. 0.256 in.)
Single Row Ball Bearings - 30.15x41x6.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR410-3015A-CEP-45-2RR-ECO (Each)
19 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $9.32 AUD
Regular price Sale price $9.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 19 available can be backordered.
Single Row Ball Bearings - 30.15x41x6.5 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
41.000
mm

(Equiv. 1.614 in.)
Width (B)
6.500
mm

(Equiv. 0.256 in.)
Single Row Ball Bearings - 30.15x41x6.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR410-3015A-CEP-45-2RR-ECO (Each)
19 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $9.32 AUD
Regular price Sale price $9.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

19 Available Now. Backorder if more than 19.
Single Row Ball Bearings - 30.15x41x7 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
41.000
mm

(Equiv. 1.614 in.)
Width (B)
7.000
mm

(Equiv. 0.276 in.)
Single Row Ball Bearings - 30.15x41x7 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR410-3015B-CEP-45-2RS (Each)
10 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $11.59 AUD
Regular price Sale price $11.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 10 available can be backordered.
Single Row Ball Bearings - 30.15x41x7 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
41.000
mm

(Equiv. 1.614 in.)
Width (B)
7.000
mm

(Equiv. 0.276 in.)
Single Row Ball Bearings - 30.15x41x7 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR410-3015B-CEP-45-2RS (Each)
10 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $11.59 AUD
Regular price Sale price $11.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

10 Available Now. Backorder if more than 10.
Single Row Ball Bearings - 30.15x41.8x6.5 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
41.800
mm

(Equiv. 1.646 in.)
Width (B)
6.500
mm

(Equiv. 0.256 in.)
Single Row Ball Bearings - 30.15x41.8x6.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR418-3015A-CEP-45-2RR-ECO (Each)
9 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $9.32 AUD
Regular price Sale price $9.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 9 available can be backordered.
Single Row Ball Bearings - 30.15x41.8x6.5 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
41.800
mm

(Equiv. 1.646 in.)
Width (B)
6.500
mm

(Equiv. 0.256 in.)
Single Row Ball Bearings - 30.15x41.8x6.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR418-3015A-CEP-45-2RR-ECO (Each)
9 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $9.32 AUD
Regular price Sale price $9.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

9 Available Now. Backorder if more than 9.
Single Row Ball Bearings - 30.15x41.8x8 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
41.800
mm

(Equiv. 1.646 in.)
Width (B)
8.000
mm

(Equiv. 0.315 in.)
Single Row Ball Bearings - 30.15x41.8x8 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR418-3018-CEP-45-2RS-ECO (Each)
12 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $7.14 AUD
Regular price Sale price $7.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 12 available can be backordered.
Single Row Ball Bearings - 30.15x41.8x8 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.150
mm

(Equiv. 1.187 in.)
OD (D)
41.800
mm

(Equiv. 1.646 in.)
Width (B)
8.000
mm

(Equiv. 0.315 in.)
Single Row Ball Bearings - 30.15x41.8x8 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR418-3018-CEP-45-2RS-ECO (Each)
12 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $7.14 AUD
Regular price Sale price $7.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

12 Available Now. Backorder if more than 12.
Single Row Ball Bearings - 30.5x41.8x8 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.500
mm

(Equiv. 1.201 in.)
OD (D)
41.800
mm

(Equiv. 1.646 in.)
Width (B)
8.000
mm

(Equiv. 0.315 in.)
Single Row Ball Bearings - 30.5x41.8x8 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: AMR418305-CEP-45-2RS-ECO (Each)
16 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $10.14 AUD
Regular price Sale price $10.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 16 available can be backordered.
Single Row Ball Bearings - 30.5x41.8x8 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.500
mm

(Equiv. 1.201 in.)
OD (D)
41.800
mm

(Equiv. 1.646 in.)
Width (B)
8.000
mm

(Equiv. 0.315 in.)
Single Row Ball Bearings - 30.5x41.8x8 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: AMR418305-CEP-45-2RS-ECO (Each)
16 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $10.14 AUD
Regular price Sale price $10.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

16 Available Now. Backorder if more than 16.
Single Row Ball Bearings - 30.5x41.8x8 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.500
mm

(Equiv. 1.201 in.)
OD (D)
41.800
mm

(Equiv. 1.646 in.)
Width (B)
8.000
mm

(Equiv. 0.315 in.)
Single Row Ball Bearings - 30.5x41.8x8 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR418-3050-CEP-45-2RS-ECO (Each)
29 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $9.68 AUD
Regular price Sale price $9.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 29 available can be backordered.
Single Row Ball Bearings - 30.5x41.8x8 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
30.500
mm

(Equiv. 1.201 in.)
OD (D)
41.800
mm

(Equiv. 1.646 in.)
Width (B)
8.000
mm

(Equiv. 0.315 in.)
Single Row Ball Bearings - 30.5x41.8x8 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR418-3050-CEP-45-2RS-ECO (Each)
29 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $9.68 AUD
Regular price Sale price $9.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

29 Available Now. Backorder if more than 29.
Single Row Ball Bearings - 31.75x50.8x12.7 mm Unflanged - Stainless Steel 316 Similar to A4, 18-10 Bearing
ID (d)
31.750
mm
+ 0.102 / - 0.000
(Equiv. 1.25 in.)
OD (D)
50.800
mm
+ 0.000 / - 0.127
(Equiv. 2 in.)
Width (B)
12.700
mm
+ 0.127 / - 0.000
(Equiv. 0.5 in.)
Single Row Ball Bearings - 31.75x50.8x12.7 mm - Stainless Steel 316 Similar to A4, 18-10
Material: Stainless Steel 316 (Similar to A4, 18-10)    Precision Grade: Semi-Precision   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: S316-R13240 (Each)
Out of Stock | Backorder Now | Orders can be expected around Sat, Feb 14, 2026
Regular price $194.95 AUD
Regular price $233.95 AUD Sale price $194.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x50.8x12.7 mm Unflanged - Stainless Steel 316 Similar to A4, 18-10 Bearing
ID (d)
31.750
mm
+ 0.102 / - 0.000
(Equiv. 1.25 in.)
OD (D)
50.800
mm
+ 0.000 / - 0.127
(Equiv. 2 in.)
Width (B)
12.700
mm
+ 0.127 / - 0.000
(Equiv. 0.5 in.)
Single Row Ball Bearings - 31.75x50.8x12.7 mm - Stainless Steel 316 Similar to A4, 18-10
Material: Stainless Steel 316 (Similar to A4, 18-10)    Precision Grade: Semi-Precision   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: S316-R13240 (Each)
Out of Stock | Backorder Now | Orders can be expected around Sat, Feb 14, 2026
Regular price $194.95 AUD
Regular price $233.95 AUD Sale price $194.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x57.15x9.525 mm Unflanged - Stainless Steel 316 Similar to A4, 18-10 Bearing
ID (d)
31.750
mm
+ 0.102 / - 0.000
(Equiv. 1.25 in.)
OD (D)
57.150
mm
+ 0.000 / - 0.152
(Equiv. 2.25 in.)
Width (B)
9.525
mm
+ 0.127 / - 0.000
(Equiv. 0.375 in.)
Single Row Ball Bearings - 31.75x57.15x9.525 mm - Stainless Steel 316 Similar to A4, 18-10
Material: Stainless Steel 316 (Similar to A4, 18-10)   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: S316-R20 (Each)
Out of Stock | Backorder Now | Orders can be expected around Sat, Feb 14, 2026
Regular price $224.59 AUD
Regular price $269.51 AUD Sale price $224.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x57.15x9.525 mm Unflanged - Stainless Steel 316 Similar to A4, 18-10 Bearing
ID (d)
31.750
mm
+ 0.102 / - 0.000
(Equiv. 1.25 in.)
OD (D)
57.150
mm
+ 0.000 / - 0.152
(Equiv. 2.25 in.)
Width (B)
9.525
mm
+ 0.127 / - 0.000
(Equiv. 0.375 in.)
Single Row Ball Bearings - 31.75x57.15x9.525 mm - Stainless Steel 316 Similar to A4, 18-10
Material: Stainless Steel 316 (Similar to A4, 18-10)   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: S316-R20 (Each)
Out of Stock | Backorder Now | Orders can be expected around Sat, Feb 14, 2026
Regular price $224.59 AUD
Regular price $269.51 AUD Sale price $224.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x57.15x9.525 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
57.150
mm
+ 0.000 / - 0.013
(Equiv. 2.25 in.)
Width (B)
9.525
mm
+ 0.000 / - 0.120
(Equiv. 0.375 in.)
Single Row Ball Bearings - 31.75x57.15x9.525 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R20 (PK-20)
Out of Stock | Backorder Now | Orders can be expected around Thu, Feb 12, 2026
Regular price $310.14 AUD
Regular price $372.16 AUD Sale price $310.14 AUD
Priced, Stocked and Sold Per 20 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x57.15x9.525 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
57.150
mm
+ 0.000 / - 0.013
(Equiv. 2.25 in.)
Width (B)
9.525
mm
+ 0.000 / - 0.120
(Equiv. 0.375 in.)
Single Row Ball Bearings - 31.75x57.15x9.525 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R20 (PK-20)
Out of Stock | Backorder Now | Orders can be expected around Thu, Feb 12, 2026
Regular price $310.14 AUD
Regular price $372.16 AUD Sale price $310.14 AUD
Priced, Stocked and Sold Per 20 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x57.15x12.7 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
57.150
mm
+ 0.000 / - 0.013
(Equiv. 2.25 in.)
Width (B)
12.700
mm
+ 0.000 / - 0.120
(Equiv. 0.5 in.)
Single Row Ball Bearings - 31.75x57.15x12.7 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R20A-2RS (Each)
6 Available Now | Further orders can be expected around Wed, Jan 07, 2026
Regular price $29.23 AUD
Regular price $53.64 AUD Sale price $29.23 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 6 available can be backordered.
Single Row Ball Bearings - 31.75x57.15x12.7 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
57.150
mm
+ 0.000 / - 0.013
(Equiv. 2.25 in.)
Width (B)
12.700
mm
+ 0.000 / - 0.120
(Equiv. 0.5 in.)
Single Row Ball Bearings - 31.75x57.15x12.7 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R20A-2RS (Each)
6 Available Now | Further orders can be expected around Wed, Jan 07, 2026
Regular price $29.23 AUD
Regular price $53.64 AUD Sale price $29.23 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

6 Available Now. Backorder if more than 6.
Single Row Ball Bearings - 31.75x63.5x15.875 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
63.500
mm
+ 0.000 / - 0.013
(Equiv. 2.5 in.)
Width (B)
15.875
mm
+ 0.000 / - 0.120
(Equiv. 0.625 in.)
Single Row Ball Bearings - 31.75x63.5x15.875 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R14040-2RS (Each)
Out of Stock | Backorder Now | Orders can be expected around Mon, Jan 19, 2026
Regular price $113.41 AUD
Regular price $136.09 AUD Sale price $113.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x63.5x15.875 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
63.500
mm
+ 0.000 / - 0.013
(Equiv. 2.5 in.)
Width (B)
15.875
mm
+ 0.000 / - 0.120
(Equiv. 0.625 in.)
Single Row Ball Bearings - 31.75x63.5x15.875 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R14040-2RS (Each)
Out of Stock | Backorder Now | Orders can be expected around Mon, Jan 19, 2026
Regular price $113.41 AUD
Regular price $136.09 AUD Sale price $113.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x69.85x17.462 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
69.850
mm
+ 0.000 / - 0.013
(Equiv. 2.75 in.)
Width (B)
17.462
mm
+ 0.000 / - 0.120
(Equiv. 0.687 in.)
Single Row Ball Bearings - 31.75x69.85x17.462 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: RLS10-2RS (Each)
Out of Stock | Backorder Now | Orders can be expected around Wed, Jan 07, 2026
Regular price $54.05 AUD
Regular price $64.85 AUD Sale price $54.05 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x69.85x17.462 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
69.850
mm
+ 0.000 / - 0.013
(Equiv. 2.75 in.)
Width (B)
17.462
mm
+ 0.000 / - 0.120
(Equiv. 0.687 in.)
Single Row Ball Bearings - 31.75x69.85x17.462 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: RLS10-2RS (Each)
Out of Stock | Backorder Now | Orders can be expected around Wed, Jan 07, 2026
Regular price $54.05 AUD
Regular price $64.85 AUD Sale price $54.05 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x69.85x17.462 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
69.850
mm
+ 0.000 / - 0.013
(Equiv. 2.75 in.)
Width (B)
17.462
mm
+ 0.000 / - 0.120
(Equiv. 0.687 in.)
Single Row Ball Bearings - 31.75x69.85x17.462 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: RLS10-ZZ (Each)
Out of Stock | Backorder Now | Orders can be expected around Wed, Jan 07, 2026
Regular price $50.41 AUD
Regular price $60.49 AUD Sale price $50.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x69.85x17.462 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
69.850
mm
+ 0.000 / - 0.013
(Equiv. 2.75 in.)
Width (B)
17.462
mm
+ 0.000 / - 0.120
(Equiv. 0.687 in.)
Single Row Ball Bearings - 31.75x69.85x17.462 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: RLS10-ZZ (Each)
Out of Stock | Backorder Now | Orders can be expected around Wed, Jan 07, 2026
Regular price $50.41 AUD
Regular price $60.49 AUD Sale price $50.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x79.375x22.225 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
79.375
mm
+ 0.000 / - 0.013
(Equiv. 3.125 in.)
Width (B)
22.225
mm
+ 0.000 / - 0.120
(Equiv. 0.875 in.)
Single Row Ball Bearings - 31.75x79.375x22.225 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: RMS10-2RS (Each)
Out of Stock | Backorder Now | Orders can be expected around Wed, Jan 07, 2026
Regular price $55.95 AUD
Regular price $67.15 AUD Sale price $55.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x79.375x22.225 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
79.375
mm
+ 0.000 / - 0.013
(Equiv. 3.125 in.)
Width (B)
22.225
mm
+ 0.000 / - 0.120
(Equiv. 0.875 in.)
Single Row Ball Bearings - 31.75x79.375x22.225 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: RMS10-2RS (Each)
Out of Stock | Backorder Now | Orders can be expected around Wed, Jan 07, 2026
Regular price $55.95 AUD
Regular price $67.15 AUD Sale price $55.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x79.375x22.225 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
79.375
mm
+ 0.000 / - 0.013
(Equiv. 3.125 in.)
Width (B)
22.225
mm
+ 0.000 / - 0.120
(Equiv. 0.875 in.)
Single Row Ball Bearings - 31.75x79.375x22.225 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: RMS10-ZZ (Each)
Out of Stock | Backorder Now | Orders can be expected around Wed, Jan 07, 2026
Regular price $52.59 AUD
Regular price $63.11 AUD Sale price $52.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 31.75x79.375x22.225 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
31.750
mm
+ 0.000 / - 0.012
(Equiv. 1.25 in.)
OD (D)
79.375
mm
+ 0.000 / - 0.013
(Equiv. 3.125 in.)
Width (B)
22.225
mm
+ 0.000 / - 0.120
(Equiv. 0.875 in.)
Single Row Ball Bearings - 31.75x79.375x22.225 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: RMS10-ZZ (Each)
Out of Stock | Backorder Now | Orders can be expected around Wed, Jan 07, 2026
Regular price $52.59 AUD
Regular price $63.11 AUD Sale price $52.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 32x58x13 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
32.000
mm

(Equiv. 1.26 in.)
OD (D)
58.000
mm

(Equiv. 2.283 in.)
Width (B)
13.000
mm

(Equiv. 0.512 in.)
Single Row Ball Bearings - 32x58x13 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: MR5832-ZZ-ECO (Each)
Out of Stock | Backorder Now | Orders can be expected around Fri, Feb 06, 2026
Regular price $57.32 AUD
Regular price $68.78 AUD Sale price $57.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 32x58x13 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
32.000
mm

(Equiv. 1.26 in.)
OD (D)
58.000
mm

(Equiv. 2.283 in.)
Width (B)
13.000
mm

(Equiv. 0.512 in.)
Single Row Ball Bearings - 32x58x13 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: MR5832-ZZ-ECO (Each)
Out of Stock | Backorder Now | Orders can be expected around Fri, Feb 06, 2026
Regular price $57.32 AUD
Regular price $68.78 AUD Sale price $57.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 32x65x17 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
32.000
mm
+ 0.000 / - 0.012
(Equiv. 1.26 in.)
OD (D)
65.000
mm
+ 0.000 / - 0.013
(Equiv. 2.559 in.)
Width (B)
17.000
mm
+ 0.000 / - 0.120
(Equiv. 0.669 in.)
Single Row Ball Bearings - 32x65x17 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: MR6532 (Each)
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 06, 2026
Regular price $18.50 AUD
Regular price $22.20 AUD Sale price $18.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 32x65x17 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
32.000
mm
+ 0.000 / - 0.012
(Equiv. 1.26 in.)
OD (D)
65.000
mm
+ 0.000 / - 0.013
(Equiv. 2.559 in.)
Width (B)
17.000
mm
+ 0.000 / - 0.120
(Equiv. 0.669 in.)
Single Row Ball Bearings - 32x65x17 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: MR6532 (Each)
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 06, 2026
Regular price $18.50 AUD
Regular price $22.20 AUD Sale price $18.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 32.8x41.8x6 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
32.800
mm

(Equiv. 1.291 in.)
OD (D)
41.800
mm

(Equiv. 1.646 in.)
Width (B)
6.000
mm

(Equiv. 0.236 in.)
Single Row Ball Bearings - 32.8x41.8x6 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR418-328-CEP-45-2RR-ECO (Each)
22 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $17.32 AUD
Regular price Sale price $17.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 22 available can be backordered.
Single Row Ball Bearings - 32.8x41.8x6 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
32.800
mm

(Equiv. 1.291 in.)
OD (D)
41.800
mm

(Equiv. 1.646 in.)
Width (B)
6.000
mm

(Equiv. 0.236 in.)
Single Row Ball Bearings - 32.8x41.8x6 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR418-328-CEP-45-2RR-ECO (Each)
22 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $17.32 AUD
Regular price Sale price $17.32 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

22 Available Now. Backorder if more than 22.
Single Row Ball Bearings - 33.338x44.45x6.35 mm / 7.142 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
33.338
mm
+ 0.000 / - 0.012
(Equiv. 1.313 in.)
OD (D)
44.450
mm
+ 0.000 / - 0.011
(Equiv. 1.75 in.)
Width (B)
6.350
mm
+ 0.000 / - 0.120
(Equiv. 0.25 in.)
Inner Ring Width (Bn)
7.142
mm
Single Row Ball Bearings - 33.338x44.45 - 6.350/7.142 / 7.142 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Deleted Item. Available while stocks last.
Part Number: WR12842-TTS (Each)
3 Available Now | Item Discontinued - Up to 3 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $50.00 AUD
Regular price $162.68 AUD Sale price $50.00 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

3 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Single Row Ball Bearings - 33.338x44.45x6.35 mm / 7.142 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
33.338
mm
+ 0.000 / - 0.012
(Equiv. 1.313 in.)
OD (D)
44.450
mm
+ 0.000 / - 0.011
(Equiv. 1.75 in.)
Width (B)
6.350
mm
+ 0.000 / - 0.120
(Equiv. 0.25 in.)
Inner Ring Width (Bn)
7.142
mm
Single Row Ball Bearings - 33.338x44.45 - 6.350/7.142 / 7.142 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Deleted Item. Available while stocks last.
Part Number: WR12842-TTS (Each)
3 Available Now | Item Discontinued - Up to 3 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $50.00 AUD
Regular price $162.68 AUD Sale price $50.00 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

3 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Single Row Ball Bearings - 34.1x46.9x7 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
34.100
mm

(Equiv. 1.343 in.)
OD (D)
46.900
mm

(Equiv. 1.846 in.)
Width (B)
7.000
mm

(Equiv. 0.276 in.)
Single Row Ball Bearings - 34.1x46.9x7 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR469-341-CEP-45-2RS-ECO (Each)
18 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $10.50 AUD
Regular price Sale price $10.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 18 available can be backordered.
Single Row Ball Bearings - 34.1x46.9x7 mm Chamfered Edges - Chrome Steel SAE 52100 Bearing
ID (d)
34.100
mm

(Equiv. 1.343 in.)
OD (D)
46.900
mm

(Equiv. 1.846 in.)
Width (B)
7.000
mm

(Equiv. 0.276 in.)
Single Row Ball Bearings - 34.1x46.9x7 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Bike   
Part Number: MR469-341-CEP-45-2RS-ECO (Each)
18 Available Now | Further orders can be expected around Fri, Jan 23, 2026
Regular price $10.50 AUD
Regular price Sale price $10.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

18 Available Now. Backorder if more than 18.