240 mm x 320 mm x 38 mm ISB 61948 MA deep groove ball bearings cross reference by manufacturer | |||||||||
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No. | Brand | D | B | C | d | C0 | Size | Noun | Width |
61948 | ISO | 320 mm | 38 mm | 38 mm | 240 mm | - | 240x320x38 | - | 38 |
61948 MA | ISB | 320 mm | 38 mm | 155,9 kN | 240 mm | 196 kN | 240x320x38 | - | 38 |
61948-MA | NKE | 320 mm | 38 mm | 159 kN | 240 mm | 195 kN | 240x320x38 | - | 38 |
61948 MA/C3 | SKF | 12.598 Inch | 320 Millimeter | - | - | 9.449 Inch | 240 Millimeter | - | - | Bearing | - |
61948-M-C3 | FAG BEARING | 12.598 Inch | 320 Millimeter | - | - | 9.449 Inch | 240 Millimeter | - | - | Bearing | - |
61948-M | FAG BEARING | 12.598 Inch | 320 Millimeter | - | - | 9.449 Inch | 240 Millimeter | - | - | Bearing | - |
61948-MA-C3 | FAG BEARING | 12.598 Inch | 320 Millimeter | - | - | 9.449 Inch | 240 Millimeter | - | - | Bearing | - |
61948 M | CONSOLIDATED BEARING | 12.598 Inch | 320 Millimeter | - | - | 9.449 Inch | 240 Millimeter | - | - | Bearing | - |
61948 M C/3 | CONSOLIDATED BEARING | 12.598 Inch | 320 Millimeter | - | - | 9.449 Inch | 240 Millimeter | - | - | Bearing | - |
Z-561948.10.RDL-Z72 | FAG BEARING | - | - | - | - | - | - | - | - |
61948-C3 | FAG BEARING | 12.598 Inch | 320 Millimeter | - | - | 9.449 Inch | 240 Millimeter | - | - | Bearing | - |
130 mm x 200 mm x 22 mm NTN 16026 deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
10 inch x 273,05 mm x 9,525 mm INA CSXC100 deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
28 mm x 78 mm x 20 mm NTN SC0690V1 deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
3,967 mm x 7,938 mm x 2,779 mm ISO R155 deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
45 mm x 75 mm x 16 mm ZEN S6009 deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
70 mm x 110 mm x 20 mm Fersa 6014 deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
45 mm x 100 mm x 25 mm NTN 6309LLB deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
45 mm x 85 mm x 19 mm SKF 6209-2RZTN9/HC5C3WT deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
4 mm x 16 mm x 5 mm ZEN S634-2RS deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
55,5625 mm x 120 mm x 65 mm SNR UK213+H-35 deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
17 mm x 35 mm x 10 mm KOYO 3NC6003HT4 GF deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
4 mm x 9 mm x 2,5 mm ISO FL618/4 deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
30 mm x 62 mm x 38,1 mm SKF YAR206-2RF deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
25 mm x 68 mm x 12 mm NTN 3TM-SC05B31CS37 deep groove ball bearings | Series:28000; Cone Part Number:28156; Cup Part Number:28300; Design Units:Imperial; Bearing Weight:0.4 Kg; Cage Type:Stamped Steel; d:39.980 mm; D:76.2 mm; B - Cone Width:19.649 mm; C - Cup Width:15.507 mm; B:19.347 mm; R - Cone Backface To Clear Radius1:2.290 mm; r - Cup Backface To Clear Radius2:1.27 mm; da - Cone Frontface Backing Diameter:44.96 mm; db - Cone Backface Backing Diameter:49.02 mm; Da - Cup Frontface Backing Diameter:71.88 mm; Db - Cup Backface Backing Diameter:68.07 mm; Ab - Cage-Cone Frontface Clearance:1.8 mm; Aa - Cage-Cone Backface Clearance:0.3 mm; a - Effective Center Location3:-3.6 mm; C90 - Dynamic Radial Rating (90 million revolutions)4:4390 lbf; C1 - Dynamic Radial Rating (1 million revolutions)5:16900 lbf; C0 - Static Radial Rating:15500 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3020 lbf; K - Factor7:1.45; e - ISO Factor8:0.4; Y - ISO Factor9:1.49; G1 - Heat Generation Factor (Roller-Raceway):20.7; G2 - Heat Generation Factor (Rib-Roller End):12.5; Cg - Geometry Factor:0.0709; |
240 mm x 320 mm x 38 mm ISB 61948 MA deep groove ball bearings Video
240 mm x 320 mm x 38 mm ISB 61948 MA deep groove ball bearings
Online shopping 105 mm Da max ISB 61948 MA deep groove ball bearings -20 °C Min operating temperature, Tmin from CN Radial clearance class a great
240 mm x 320 mm x 38 mm ISB 61948 MA deep groove ball
240 mm x 320 mm x 38 mm ISB 61948 MA... Bearing No. 61948 MA. Size. 240x320x38 mm. Bore Diameter. 240 mm. Outer Diameter. 320 mm. Width. 38 mm d
ISB 61948 MA Bearing | Model:61948 MA
ISB 61948 MA Bearing ... NCF 2920 V 4 690300 S 4M GRINDINGS AND SPECIAL BEARINGS NCF2920 V 4 61948 MA/C3 6 4720000 SKF 62/22 2RS 7❀❀❀
240 mm x 320 mm x 38 mm ISB 61948 MA deep groove ball
Find the discount ISB 61948 MA deep groove ball bearings online you need . We offer ... If you check out our large selection of ISB 61948 MA deep groove ball
240 mm x 320 mm x 38 mm ISB 61948 MA deep groove ball bearings
Find the discount ISB 61948 MA deep groove ball bearings online you need . We offer ... If you check out our large selection of ISB 61948 MA deep groove ball
240 mm x 320 mm x 38 mm ISB 61948 MA deep groove ball
How do you find the 240 mm x 320 mm x 38 mm ISB 61948 MA deep groove ball bearings 240 mm x 320 mm x 38 mm 2.1 Weight / Kilogram specification?
240 mm x 320 mm x 38 mm ISB 61948 MA deep groove ball bearings
240 mm x 320 mm x 38 mm ISB 61948 MA deep groove ball bearings. Various 240x320x38 Bearing types 240 mm x 320 mm x 38 mm and Zinc Plated finish:
Bearing 61948 MA (ISB) | Size and Specification | Bearings
Deep groove ball bearings 61948 MA. Bearing number : 61948 MA. Size (mm) : 240x320x38. Brand : ISB. Bore Diameter (mm) : 240. Outer Diameter (mm) : 320