# 6900 bearing dimensions

A 6900 bearing is 10 mm bore × 22 mm outside diameter × 6 mm wide (0.394 × 0.866 × 0.236 in). The sealed version is 6900-2RS; the shielded version is 6900-ZZ.

## 6900 data

- Type: deep groove ball bearing, 69 series (thin-section)
- Bore d: 10 mm (0.3937 in)
- Outside diameter D: 22 mm (0.8661 in)
- Width B: 6 mm (0.2362 in)
- Bore code: 00 = 10 mm (codes 00 to 03 are fixed: 10, 12, 15 and 17 mm)
- Sealed: 6900-2RS; shielded: 6900-ZZ; open: 6900

## Designations by maker

| Maker | Sealed | Shielded |
|---|---|---|
| SKF | 6900-2RSH | 6900-2Z |
| FAG (Schaeffler) | 6900-2RSR | 6900-2ZR |
| NSK | 6900DDU | 6900ZZ |
| NTN | 6900LLU | 6900ZZ |
| Koyo (JTEKT) | 6900-2RS | 6900ZZ |
| Timken | 6900-2RS | see catalogue |

## Same 10 mm bore, other series

| Bearing | Series | OD mm | Width mm |
|---|---|---|---|
| 6800 | thin-section | 19 | 5 |
| 6900 | thin-section | 22 | 6 |
| 6000 | extra-light | 26 | 8 |
| 6200 | light | 30 | 9 |
| 6300 | medium | 35 | 11 |


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

## FAQ

**What size is a 6900 bearing?**
10 mm bore, 22 mm outside diameter and 6 mm wide, which is 0.394 × 0.866 × 0.236 in.

**What does 2RS mean on a 6900 bearing?**
6900-2RS has rubber contact seals on both sides. 6900-ZZ (also written 6900-2Z) has metal shields on both sides. Both have the same 10 × 22 × 6 mm dimensions.

**Is 6900-2RS the same as 6900-ZZ?**
They are the same size and interchangeable in a housing. The sealed 6900-2RS keeps out fine dirt and water better; the shielded 6900-ZZ runs with less friction.

**What is the SKF equivalent of 6900-2RS?**
SKF writes it 6900-2RSH; FAG 6900-2RSR, NSK 6900DDU, NTN 6900LLU and Koyo 6900-2RS. Check the maker's catalogue for the exact seal type.

**What does the number 6900 mean?**
6 is the deep groove ball bearing type, 9 is the thin-section dimension series, and 00 = 10 mm (codes 00 to 03 are fixed: 10, 12, 15 and 17 mm).

**Which bearings have the same bore as 6900?**
6800, 6000, 6200, 6300 also have a 10 mm bore, with different outside diameters and widths.

Source page: https://machinistcharts.com/bearing/6900/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)