d - 53,975 mm

D - 120,65 mm

T - 41,275 mm

B - 41,275 mm

C - 31,75 mm

ra1 max. - 3,3 mm

a - 14,4 mm

Da - 105 mm

db - 63 mm

ra max. - 3,5 mm

da - 70 mm

Db - 110 mm

Weight - 2,21 Kg

Basic dynamic load rating (C) - 172 kN

Basic static load rating (C0) - 213 kN

(Grease) Lubrication Speed - 3 300 r/min

(Oil) Lubrication Speed - 4 400 r/min

Calculation factor (e) - 0,31

Calculation factor (Y0) - 1,05

Calculation factor (Y2) - 1,91

• Model Number:4T-621/612
• Inner Diameter：53,975mm Outer Diameter：120,65mm Width：41,275mm
• Type：Tapered Roller Bearings
• Update date：2026-01-14
• Application:flow control valve,Individual Wire,Internal thread type,machine tool spindle,motorcycle,thin metal materials,outdoor equipment,milling head plug,Control,Rolling mill gear box,lifting upgrade
• Similar models:KOYO 13687/13621 Timken 13687/13621 SKF 32008XR/QVA621 Timken 621/612 SKF BT1-0336/QVA621 Timken 47685/47621 KOYO 13686/13621 ISO 13687/13621 KBC TR306217 ISO 13685/13621
• BEARING POWER International Trading Co.,Ltd. specialize in 4T-621/612 products，there is large inventory of NTN 4T-621/612 . We has been built up long-term cooperation with NTN company, could make a bulk order of the 4T-621/612 Which NTN 4T-621/612 is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express.Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

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