# 6008 bearing dimensions

A 6008 bearing is 40 mm bore × 68 mm outside diameter × 15 mm wide (1.575 × 2.677 × 0.591 in). The sealed version is 6008-2RS; the shielded version is 6008-ZZ.

## 6008 data

- Type: deep groove ball bearing, 60 series (extra-light)
- Bore d: 40 mm (1.5748 in)
- Outside diameter D: 68 mm (2.6772 in)
- Width B: 15 mm (0.5906 in)
- Bore code: 08 × 5 = 40 mm (from 04 up, multiply by 5)
- Sealed: 6008-2RS; shielded: 6008-ZZ; open: 6008

## Designations by maker

| Maker | Sealed | Shielded |
|---|---|---|
| SKF | 6008-2RSH | 6008-2Z |
| FAG (Schaeffler) | 6008-2RSR | 6008-2ZR |
| NSK | 6008DDU | 6008ZZ |
| NTN | 6008LLU | 6008ZZ |
| Koyo (JTEKT) | 6008-2RS | 6008ZZ |
| Timken | 6008-2RS | see catalogue |

## Same 40 mm bore, other series

| Bearing | Series | OD mm | Width mm |
|---|---|---|---|
| 6808 | thin-section | 52 | 7 |
| 6908 | thin-section | 62 | 12 |
| 6008 | extra-light | 68 | 15 |
| 6208 | light | 80 | 18 |
| 6308 | medium | 90 | 23 |


Load ratings and speed limits vary by maker: take them from the manufacturer's catalogue.

## FAQ

**What size is a 6008 bearing?**
40 mm bore, 68 mm outside diameter and 15 mm wide, which is 1.575 × 2.677 × 0.591 in.

**What does 2RS mean on a 6008 bearing?**
6008-2RS has rubber contact seals on both sides. 6008-ZZ (also written 6008-2Z) has metal shields on both sides. Both have the same 40 × 68 × 15 mm dimensions.

**Is 6008-2RS the same as 6008-ZZ?**
They are the same size and interchangeable in a housing. The sealed 6008-2RS keeps out fine dirt and water better; the shielded 6008-ZZ runs with less friction.

**What is the SKF equivalent of 6008-2RS?**
SKF writes it 6008-2RSH; FAG 6008-2RSR, NSK 6008DDU, NTN 6008LLU and Koyo 6008-2RS. Check the maker's catalogue for the exact seal type.

**What does the number 6008 mean?**
6 is the deep groove ball bearing type, 0 is the extra-light dimension series, and 08 × 5 = 40 mm (from 04 up, multiply by 5).

**Which bearings have the same bore as 6008?**
6808, 6908, 6208, 6308 also have a 40 mm bore, with different outside diameters and widths.

Source page: https://machinistcharts.com/bearing/6008/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)