W Series Stainless Steel Flanged Miniature Bearings

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W Series Stainless Steel Flanged Miniature Bearings

Our W Series (Flanged Miniature) offers precision stainless steel bearings in a variety of inch-based dimensions. The flange provides a reliable reference point for axial mounting in high-precision micro-assemblies. These bearings are widely used in the medical and aerospace sectors due to their ability to provide low-friction rotation in a corrosion-resistant package.

Bore diameter
1 mm 1.5 mm 2 mm 2.5 mm 3 mm 4 mm 5 mm 6 mm 7 mm 8 mm 9 mm
Outside diameter
4 mm 5 mm 6 mm 7 mm 8 mm 9 mm 10 mm 11 mm 12 mm 13 mm 14 mm 15 mm 16 mm 17 mm 19 mm 20 mm 22 mm 24 mm
Width
1.6 mm 2 mm 2.3 mm 2.5 mm 2.6 mm 2.8 mm 3 mm 3.5 mm 4 mm 4.5 mm 5 mm 6 mm 7 mm
Seal type
Open Sealed Shielded
Cage material
Chrome Steel Stainless Steel
Flange outer diameter
5 mm 6.1 mm 6.5 mm 7.1 mm 7.2 mm 7.5 mm 8.1 mm 8.2 mm 8.5 mm 9.2 mm 9.5 mm 10.3 mm 10.5 mm 11.2 mm 11.5 mm 12.2 mm 12.5 mm 12.6 mm 13.2 mm 13.5 mm 13.6 mm 15 mm 15.5 mm 16 mm 17 mm 18 mm 19 mm 22 mm 23 mm 25 mm 27 mm
Flange thickness
0.5 mm 0.6 mm 0.7 mm 0.8 mm 0.9 mm 1 mm 1.1 mm 1.2 mm 1.3 mm 1.5 mm
Limiting speed
22 X 1000 rpm 24 X 1000 rpm 26 X 1000 rpm 28 X 1000 rpm 30 X 1000 rpm 32 X 1000 rpm 34 X 1000 rpm 36 X 1000 rpm 38 X 1000 rpm 40 X 1000 rpm 43 X 1000 rpm 45 X 1000 rpm 48 X 1000 rpm 50 X 1000 rpm 53 X 1000 rpm 56 X 1000 rpm 60 X 1000 rpm 63 X 1000 rpm 67 X 1000 rpm 70 X 1000 rpm 75 X 1000 rpm 80 X 1000 rpm 85 X 1000 rpm 90 X 1000 rpm 95 X 1000 rpm 100 X 1000 rpm 110 X 1000 rpm 120 X 1000 rpm 140 X 1000 rpm
Radial dynamic load rating
14 lbf 18 lbf 21 lbf 26 lbf 27 lbf 30 lbf 32 lbf 39 lbf 40 lbf 43 lbf 50 lbf 51 lbf 58 lbf 64 lbf 70 lbf 72 lbf 73 lbf 80 lbf 82 lbf 91 lbf 117 lbf 121 lbf 139 lbf 149 lbf 161 lbf 167 lbf 171 lbf 207 lbf 281 lbf 321 lbf 344 lbf 438 lbf 447 lbf 456 lbf
Radial static load rating
4 lbf 6 lbf 8 lbf 10 lbf 11 lbf 12 lbf 13 lbf 14 lbf 15 lbf 16 lbf 20 lbf 21 lbf 23 lbf 25 lbf 26 lbf 31 lbf 32 lbf 40 lbf 50 lbf 53 lbf 56 lbf 58 lbf 60 lbf 67 lbf 75 lbf 82 lbf 102 lbf 132 lbf 142 lbf 175 lbf 183 lbf 187 lbf 198 lbf 209 lbf
Part Number Bore diameter Outside diameter Width Flange outer diameter Flange thickness For load direction Seal type Ring material Ball material Radial dynamic load rating Radial static load rating Limiting speed
W 619/1 R 1 mm 4 mm 1.6 mm 5 mm 0.5 mm Radial Open Stainless Steel Stainless Steel 18 lbf 4 lbf 140 X 1000 rpm
W 638/1.5 R-2Z 1.5 mm 4 mm 2 mm 5 mm 0.6 mm Radial Shielded Stainless Steel Stainless Steel 14 lbf 4 lbf 110 X 1000 rpm
W 619/1.5 R 1.5 mm 5 mm 2 mm 6.5 mm 0.6 mm Radial Open Stainless Steel Stainless Steel 30 lbf 8 lbf 120 X 1000 rpm
W 639/1.5 R-2Z 1.5 mm 5 mm 2.6 mm 6.5 mm 0.8 mm Radial Shielded Stainless Steel Stainless Steel 30 lbf 8 lbf 100 X 1000 rpm
W 60/1.5 R 1.5 mm 6 mm 2.5 mm 7.5 mm 0.6 mm Radial Open Stainless Steel Stainless Steel 43 lbf 11 lbf 110 X 1000 rpm
W 630/1.5 R-2Z 1.5 mm 6 mm 3 mm 7.5 mm 0.8 mm Radial Shielded Stainless Steel Stainless Steel 43 lbf 11 lbf 90 X 1000 rpm
W 638/2 R-2Z 2 mm 5 mm 2.3 mm 6.1 mm 0.6 mm Radial Shielded Stainless Steel Stainless Steel 21 lbf 6 lbf 100 X 1000 rpm
W 619/2 R 2 mm 6 mm 2.3 mm 7.5 mm 0.6 mm Radial Open Stainless Steel Stainless Steel 43 lbf 11 lbf 110 X 1000 rpm
W 639/2 R-2Z 2 mm 6 mm 3 mm 7.5 mm 0.8 mm Radial Shielded Stainless Steel Stainless Steel 43 lbf 11 lbf 90 X 1000 rpm
W 602 R 2 mm 7 mm 2.8 mm 8.5 mm 0.7 mm Radial Open Stainless Steel Stainless Steel 50 lbf 15 lbf 100 X 1000 rpm
W 630/2 R-2ZS 2 mm 7 mm 3.5 mm 8.5 mm 0.9 mm Radial Shielded Stainless Steel Stainless Steel 50 lbf 15 lbf 80 X 1000 rpm
W 638/2.5 R-2Z 2.5 mm 6 mm 2.6 mm 7.1 mm 0.8 mm Radial Shielded Stainless Steel Stainless Steel 26 lbf 8 lbf 85 X 1000 rpm
W 619/2.5 R 2.5 mm 7 mm 2.5 mm 8.5 mm 0.7 mm Radial Open Stainless Steel Stainless Steel 50 lbf 15 lbf 100 X 1000 rpm
W 60/2.5 R 2.5 mm 8 mm 2.8 mm 9.5 mm 0.7 mm Radial Open Stainless Steel Stainless Steel 70 lbf 20 lbf 95 X 1000 rpm
W 630/2.5 R-2Z 2.5 mm 8 mm 4 mm 9.5 mm 0.9 mm Radial Shielded Stainless Steel Stainless Steel 70 lbf 20 lbf 80 X 1000 rpm
W 617/3 R 3 mm 6 mm 2 mm 7.2 mm 0.6 mm Radial Open Stainless Steel Stainless Steel 26 lbf 8 lbf 110 X 1000 rpm
W 627/3 R-2Z 3 mm 6 mm 2.5 mm 7.2 mm 0.6 mm Radial Shielded Stainless Steel Stainless Steel 26 lbf 8 lbf 85 X 1000 rpm
W 638/3 R-2RS1 3 mm 7 mm 3 mm 8.1 mm 0.8 mm Radial Sealed Stainless Steel Stainless Steel 40 lbf 13 lbf 45 X 1000 rpm
W 638/3 R-2Z 3 mm 7 mm 3 mm 8.1 mm 0.8 mm Radial Shielded Stainless Steel Stainless Steel 40 lbf 13 lbf 80 X 1000 rpm
W 619/3 R-2Z 3 mm 8 mm 3 mm 9.2 mm 0.6 mm Radial Shielded Stainless Steel Stainless Steel 51 lbf 16 lbf 75 X 1000 rpm
W 619/3 R 3 mm 8 mm 3 mm 9.5 mm 0.7 mm Radial Open Stainless Steel Stainless Steel 72 lbf 20 lbf 95 X 1000 rpm
W 639/3 R-2RS1 3 mm 8 mm 4 mm 9.5 mm 0.9 mm Radial Sealed Stainless Steel Stainless Steel 72 lbf 20 lbf 43 X 1000 rpm
W 639/3 R-2Z 3 mm 8 mm 4 mm 9.5 mm 0.9 mm Radial Shielded Stainless Steel Stainless Steel 72 lbf 20 lbf 75 X 1000 rpm
W 603 R 3 mm 9 mm 3 mm 10.5 mm 0.7 mm Radial Open Stainless Steel Stainless Steel 73 lbf 21 lbf 90 X 1000 rpm
W 630/3 R-2Z 3 mm 9 mm 5 mm 10.5 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 73 lbf 21 lbf 70 X 1000 rpm
W 623 R 3 mm 10 mm 4 mm 11.5 mm 1 mm Radial Open Stainless Steel Stainless Steel 80 lbf 25 lbf 90 X 1000 rpm
W 623 R-2RS1 3 mm 10 mm 4 mm 11.5 mm 1 mm Radial Sealed Stainless Steel Stainless Steel 80 lbf 25 lbf 40 X 1000 rpm
W 623 R-2Z 3 mm 10 mm 4 mm 11.5 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 80 lbf 25 lbf 70 X 1000 rpm
W 617/4 R 4 mm 7 mm 2 mm 8.2 mm 0.6 mm Radial Open Stainless Steel Stainless Steel 40 lbf 13 lbf 95 X 1000 rpm
W 627/4 R-2Z 4 mm 7 mm 2.5 mm 8.2 mm 0.6 mm Radial Shielded Stainless Steel Stainless Steel 32 lbf 12 lbf 75 X 1000 rpm
W 638/4 R-2RS1 4 mm 9 mm 4 mm 10.3 mm 1 mm Radial Sealed Stainless Steel Stainless Steel 82 lbf 26 lbf 40 X 1000 rpm
W 638/4 R-2Z 4 mm 9 mm 4 mm 10.3 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 82 lbf 26 lbf 70 X 1000 rpm
W 619/4 R 4 mm 11 mm 4 mm 12.5 mm 1 mm Radial Open Stainless Steel Stainless Steel 121 lbf 40 lbf 80 X 1000 rpm
W 619/4 R-2RS1 4 mm 11 mm 4 mm 12.5 mm 1 mm Radial Sealed Stainless Steel Stainless Steel 121 lbf 40 lbf 36 X 1000 rpm
W 619/4 R-2Z 4 mm 11 mm 4 mm 12.5 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 121 lbf 40 lbf 63 X 1000 rpm
W 604 R 4 mm 12 mm 4 mm 13.5 mm 1 mm Radial Open Stainless Steel Stainless Steel 121 lbf 40 lbf 80 X 1000 rpm
W 604 R-2RS1 4 mm 12 mm 4 mm 13.5 mm 1 mm Radial Sealed Stainless Steel Stainless Steel 121 lbf 40 lbf 36 X 1000 rpm
W 604 R-2Z 4 mm 12 mm 4 mm 13.5 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 121 lbf 40 lbf 63 X 1000 rpm
W 624 R 4 mm 13 mm 5 mm 15 mm 1 mm Radial Open Stainless Steel Stainless Steel 167 lbf 56 lbf 70 X 1000 rpm
W 624 R-2RS1 4 mm 13 mm 5 mm 15 mm 1 mm Radial Sealed Stainless Steel Stainless Steel 167 lbf 56 lbf 32 X 1000 rpm
W 624 R-2Z 4 mm 13 mm 5 mm 15 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 167 lbf 56 lbf 56 X 1000 rpm
W 634 R 4 mm 16 mm 5 mm 18 mm 1 mm Radial Open Stainless Steel Stainless Steel 171 lbf 60 lbf 63 X 1000 rpm
W 634 R-2RS1 4 mm 16 mm 5 mm 18 mm 1 mm Radial Sealed Stainless Steel Stainless Steel 171 lbf 60 lbf 30 X 1000 rpm
W 634 R-2Z 4 mm 16 mm 5 mm 18 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 171 lbf 60 lbf 50 X 1000 rpm
W 617/5 R 5 mm 8 mm 2 mm 9.2 mm 0.6 mm Radial Open Stainless Steel Stainless Steel 39 lbf 14 lbf 85 X 1000 rpm
W 627/5 R-2Z 5 mm 8 mm 2.5 mm 9.2 mm 0.6 mm Radial Shielded Stainless Steel Stainless Steel 27 lbf 10 lbf 70 X 1000 rpm
W 628/5 R-2Z 5 mm 11 mm 4 mm 12.6 mm 0.8 mm Radial Shielded Stainless Steel Stainless Steel 91 lbf 32 lbf 60 X 1000 rpm
W 638/5 R-2RS1 5 mm 11 mm 5 mm 12.5 mm 1 mm Radial Sealed Stainless Steel Stainless Steel 91 lbf 32 lbf 34 X 1000 rpm
W 638/5 R-2Z 5 mm 11 mm 5 mm 12.5 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 91 lbf 32 lbf 60 X 1000 rpm
W 619/5 R 5 mm 13 mm 4 mm 15 mm 1 mm Radial Open Stainless Steel Stainless Steel 171 lbf 75 lbf 70 X 1000 rpm
W 619/5 R-2RS1 5 mm 13 mm 4 mm 15 mm 1 mm Radial Sealed Stainless Steel Stainless Steel 171 lbf 75 lbf 32 X 1000 rpm
W 619/5 R-2Z 5 mm 13 mm 4 mm 15 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 171 lbf 75 lbf 56 X 1000 rpm
W 605 R 5 mm 14 mm 5 mm 16 mm 1 mm Radial Open Stainless Steel Stainless Steel 171 lbf 58 lbf 67 X 1000 rpm
W 605 R-2RS1 5 mm 14 mm 5 mm 16 mm 1 mm Radial Sealed Stainless Steel Stainless Steel 171 lbf 58 lbf 30 X 1000 rpm
W 605 R-2Z 5 mm 14 mm 5 mm 16 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 171 lbf 58 lbf 53 X 1000 rpm
W 625 R 5 mm 16 mm 5 mm 18 mm 1 mm Radial Open Stainless Steel Stainless Steel 321 lbf 142 lbf 63 X 1000 rpm
W 625 R-2RS1 5 mm 16 mm 5 mm 18 mm 1 mm Radial Sealed Stainless Steel Stainless Steel 321 lbf 142 lbf 28 X 1000 rpm
W 625 R-2Z 5 mm 16 mm 5 mm 18 mm 1 mm Radial Shielded Stainless Steel Stainless Steel 321 lbf 142 lbf 50 X 1000 rpm
W 635 R 5 mm 19 mm 6 mm 22 mm 1.5 mm Radial Open Stainless Steel Stainless Steel 456 lbf 198 lbf 56 X 1000 rpm
W 635 R-2RS1 5 mm 19 mm 6 mm 22 mm 1.5 mm Radial Sealed Stainless Steel Stainless Steel 456 lbf 198 lbf 24 X 1000 rpm
W 635 R-2Z 5 mm 19 mm 6 mm 22 mm 1.5 mm Radial Shielded Stainless Steel Stainless Steel 456 lbf 198 lbf 43 X 1000 rpm
W 617/6 R 6 mm 10 mm 2.5 mm 11.2 mm 0.6 mm Radial Open Stainless Steel Stainless Steel 64 lbf 25 lbf 75 X 1000 rpm
W 627/6 R-2Z 6 mm 10 mm 3 mm 11.2 mm 0.6 mm Radial Shielded Stainless Steel Stainless Steel 64 lbf 25 lbf 60 X 1000 rpm
W 618/6 R 6 mm 13 mm 3.5 mm 15 mm 1 mm Radial Open Stainless Steel Stainless Steel 139 lbf 50 lbf 67 X 1000 rpm
W 628/6 R-2RS1 6 mm 13 mm 5 mm 15 mm 1.1 mm Radial Sealed Stainless Steel Stainless Steel 139 lbf 50 lbf 30 X 1000 rpm
W 628/6 R-2Z 6 mm 13 mm 5 mm 15 mm 1.1 mm Radial Shielded Stainless Steel Stainless Steel 139 lbf 50 lbf 53 X 1000 rpm
W 619/6 R 6 mm 15 mm 5 mm 17 mm 1.2 mm Radial Open Stainless Steel Stainless Steel 171 lbf 60 lbf 63 X 1000 rpm
W 619/6 R-2RS1 6 mm 15 mm 5 mm 17 mm 1.2 mm Radial Sealed Stainless Steel Stainless Steel 171 lbf 60 lbf 30 X 1000 rpm
W 619/6 R-2Z 6 mm 15 mm 5 mm 17 mm 1.2 mm Radial Shielded Stainless Steel Stainless Steel 171 lbf 60 lbf 50 X 1000 rpm
W 606 R 6 mm 17 mm 6 mm 19 mm 1.2 mm Radial Open Stainless Steel Stainless Steel 438 lbf 187 lbf 60 X 1000 rpm
W 606 R-2RS1 6 mm 17 mm 6 mm 19 mm 1.2 mm Radial Sealed Stainless Steel Stainless Steel 438 lbf 187 lbf 26 X 1000 rpm
W 606 R-2Z 6 mm 17 mm 6 mm 19 mm 1.2 mm Radial Shielded Stainless Steel Stainless Steel 438 lbf 187 lbf 48 X 1000 rpm
W 626 R 6 mm 19 mm 6 mm 22 mm 1.5 mm Radial Open Stainless Steel Stainless Steel 344 lbf 132 lbf 56 X 1000 rpm
W 626 R-2RS1 6 mm 19 mm 6 mm 22 mm 1.5 mm Radial Sealed Stainless Steel Stainless Steel 344 lbf 132 lbf 24 X 1000 rpm
W 626 R-2Z 6 mm 19 mm 6 mm 22 mm 1.5 mm Radial Shielded Stainless Steel Stainless Steel 344 lbf 132 lbf 43 X 1000 rpm
W 617/7 R 7 mm 11 mm 2.5 mm 12.2 mm 0.6 mm Radial Open Stainless Steel Stainless Steel 58 lbf 23 lbf 70 X 1000 rpm
W 618/7 R 7 mm 14 mm 3.5 mm 16 mm 1 mm Radial Open Stainless Steel Stainless Steel 149 lbf 58 lbf 63 X 1000 rpm
W 628/7 R-2RS1 7 mm 14 mm 5 mm 16 mm 1.1 mm Radial Sealed Stainless Steel Stainless Steel 149 lbf 58 lbf 28 X 1000 rpm
W 628/7 R-2Z 7 mm 14 mm 5 mm 16 mm 1.1 mm Radial Shielded Stainless Steel Stainless Steel 149 lbf 58 lbf 50 X 1000 rpm
W 619/7 R 7 mm 17 mm 5 mm 19 mm 1.2 mm Radial Open Stainless Steel Stainless Steel 207 lbf 82 lbf 56 X 1000 rpm
W 619/7 R-2RS1 7 mm 17 mm 5 mm 19 mm 1.2 mm Radial Sealed Stainless Steel Stainless Steel 207 lbf 82 lbf 26 X 1000 rpm
W 619/7 R-2Z 7 mm 17 mm 5 mm 19 mm 1.2 mm Radial Shielded Stainless Steel Stainless Steel 207 lbf 82 lbf 45 X 1000 rpm
W 607 R 7 mm 19 mm 6 mm 22 mm 1.5 mm Radial Open Stainless Steel Stainless Steel 344 lbf 132 lbf 56 X 1000 rpm
W 607 R-2RS1 7 mm 19 mm 6 mm 22 mm 1.5 mm Radial Sealed Stainless Steel Stainless Steel 344 lbf 132 lbf 24 X 1000 rpm
W 607 R-2Z 7 mm 19 mm 6 mm 22 mm 1.5 mm Radial Shielded Stainless Steel Stainless Steel 344 lbf 132 lbf 43 X 1000 rpm
W 627 R 7 mm 22 mm 7 mm 25 mm 1.5 mm Radial Open Stainless Steel Stainless Steel 447 lbf 175 lbf 48 X 1000 rpm
W 627 R-2Z 7 mm 22 mm 7 mm 25 mm 1.5 mm Radial Shielded Stainless Steel Stainless Steel 447 lbf 175 lbf 38 X 1000 rpm
W 627/7 R-2Z 7 mm 22 mm 7 mm - - Radial Shielded Stainless Steel Stainless Steel 447 lbf 175 lbf 48 X 1000 rpm
W 617/8 R 8 mm 12 mm 2.5 mm 13.2 mm 0.6 mm Radial Open Stainless Steel Stainless Steel 70 lbf 31 lbf 63 X 1000 rpm
W 637/8 R-2Z 8 mm 12 mm 3.5 mm 13.6 mm 0.8 mm Radial Shielded Stainless Steel Stainless Steel 70 lbf 31 lbf 53 X 1000 rpm
W 628/8 R-2RS1 8 mm 16 mm 5 mm 18 mm 1.1 mm Radial Sealed Stainless Steel Stainless Steel 161 lbf 67 lbf 26 X 1000 rpm
W 628/8 R-2Z 8 mm 16 mm 5 mm 18 mm 1.1 mm Radial Shielded Stainless Steel Stainless Steel 161 lbf 67 lbf 45 X 1000 rpm
W 638/8 R-2Z 8 mm 16 mm 6 mm 18 mm 1.3 mm Radial Shielded Stainless Steel Stainless Steel 161 lbf 67 lbf 45 X 1000 rpm
W 619/8 R 8 mm 19 mm 6 mm 22 mm 1.5 mm Radial Open Stainless Steel Stainless Steel 281 lbf 102 lbf 53 X 1000 rpm
W 619/8 R-2RS1 8 mm 19 mm 6 mm 22 mm 1.5 mm Radial Sealed Stainless Steel Stainless Steel 281 lbf 102 lbf 24 X 1000 rpm
W 619/8 R-2Z 8 mm 19 mm 6 mm 22 mm 1.5 mm Radial Shielded Stainless Steel Stainless Steel 281 lbf 102 lbf 43 X 1000 rpm
W 608 R 8 mm 22 mm 7 mm 25 mm 1.5 mm Radial Open Stainless Steel Stainless Steel 447 lbf 175 lbf 48 X 1000 rpm
W 608 R-2RS1 8 mm 22 mm 7 mm 25 mm 1.5 mm Radial Sealed Stainless Steel Stainless Steel 447 lbf 175 lbf 22 X 1000 rpm
W 608 R-2Z 8 mm 22 mm 7 mm 25 mm 1.5 mm Radial Shielded Stainless Steel Stainless Steel 447 lbf 175 lbf 38 X 1000 rpm
W 617/9 R 9 mm 14 mm 3 mm 15.5 mm 0.8 mm Radial Open Stainless Steel Stainless Steel 117 lbf 53 lbf 60 X 1000 rpm
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