BEARINGDEX
Deep groove ball

6407 bearing

35 mm bore, 100 mm outside diameter, 25 mm width (1.378 × 3.937 × 0.9843 in).

Dimensions

mminch
Bore d351.3780
Outside diameter D1003.9370
Width B250.9843

Quick numbers

Pitch diameter dm67.5 mm
Section height (D − d)/232.5 mm
n·dm at 1,800 rpm121,500
n·dm at 3,600 rpm243,000

Compare against the maker's limiting speed. Speed calculator · L10 life

What the number means

6Deep groove ball
4Diameter series 4: heavy. Width series 0 is implied and left off.
07Bore code 07 × 5 = 35 mm

How each brand writes it

Same bearing, every maker's notation
VersionSKFFAGNSKNTNKoyoNACHI
Open640764076407640764076407
Shields both sides6407-2Z6407-2ZR6407ZZ6407ZZ6407ZZ6407ZZE
Contact seals both sides6407-2RSH6407-2RSR6407DDU6407LLU6407-2RS6407-2NSE
Contact seals both sides, C36407-2RSH/C36407-2RSR-C36407DDUC36407LLUC36407-2RSC36407-2NSE C3 Verify
Non-contact seals both sides6407-2RSL6407-2BRS Verify6407VV6407LLB6407-2RU Verify6407-2NKE Verify
Shields both sides, C36407-2Z/C36407-2ZR-C36407ZZC36407ZZC36407ZZC36407ZZE C3 Verify