BEARINGDEX
Deep groove ball

6316 bearing

80 mm bore, 170 mm outside diameter, 39 mm width (3.1496 × 6.6929 × 1.5354 in).

Dimensions

mminch
Bore d803.1496
Outside diameter D1706.6929
Width B391.5354

Quick numbers

Pitch diameter dm125.0 mm
Section height (D − d)/245.0 mm
n·dm at 1,800 rpm225,000
n·dm at 3,600 rpm450,000

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

What the number means

6Deep groove ball
3Diameter series 3: medium. Width series 0 is implied and left off.
16Bore code 16 × 5 = 80 mm

How each brand writes it

Same bearing, every maker's notation
VersionSKFFAGNSKNTNKoyoNACHI
Open631663166316631663166316
Shields both sides6316-2Z6316-2ZR6316ZZ6316ZZ6316ZZ6316ZZE
Contact seals both sides6316-2RSH6316-2RSR6316DDU6316LLU6316-2RS6316-2NSE
Contact seals both sides, C36316-2RSH/C36316-2RSR-C36316DDUC36316LLUC36316-2RSC36316-2NSE C3 Verify
Non-contact seals both sides6316-2RSL6316-2BRS Verify6316VV6316LLB6316-2RU Verify6316-2NKE Verify
Shields both sides, C36316-2Z/C36316-2ZR-C36316ZZC36316ZZC36316ZZC36316ZZE C3 Verify

Same size, different bearing

These share the 80 × 170 × 39 mm envelope but carry load differently. They aren't drop-in swaps.