# 6902 bearing dimensions

A 6902 bearing is 15 mm bore × 28 mm outside diameter × 7 mm wide (0.591 × 1.102 × 0.276 in). The sealed version is 6902-2RS; the shielded version is 6902-ZZ.

## 6902 data

- Type: deep groove ball bearing, 69 series (thin-section)
- Bore d: 15 mm (0.5906 in)
- Outside diameter D: 28 mm (1.1024 in)
- Width B: 7 mm (0.2756 in)
- Bore code: 02 = 15 mm (codes 00 to 03 are fixed: 10, 12, 15 and 17 mm)
- Sealed: 6902-2RS; shielded: 6902-ZZ; open: 6902

## Designations by maker

| Maker | Sealed | Shielded |
|---|---|---|
| SKF | 6902-2RSH | 6902-2Z |
| FAG (Schaeffler) | 6902-2RSR | 6902-2ZR |
| NSK | 6902DDU | 6902ZZ |
| NTN | 6902LLU | 6902ZZ |
| Koyo (JTEKT) | 6902-2RS | 6902ZZ |
| Timken | 6902-2RS | see catalogue |

## Same 15 mm bore, other series

| Bearing | Series | OD mm | Width mm |
|---|---|---|---|
| 6802 | thin-section | 24 | 5 |
| 6902 | thin-section | 28 | 7 |
| 6002 | extra-light | 32 | 9 |
| 6202 | light | 35 | 11 |
| 6302 | medium | 42 | 13 |


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

## FAQ

**What size is a 6902 bearing?**
15 mm bore, 28 mm outside diameter and 7 mm wide, which is 0.591 × 1.102 × 0.276 in.

**What does 2RS mean on a 6902 bearing?**
6902-2RS has rubber contact seals on both sides. 6902-ZZ (also written 6902-2Z) has metal shields on both sides. Both have the same 15 × 28 × 7 mm dimensions.

**Is 6902-2RS the same as 6902-ZZ?**
They are the same size and interchangeable in a housing. The sealed 6902-2RS keeps out fine dirt and water better; the shielded 6902-ZZ runs with less friction.

**What is the SKF equivalent of 6902-2RS?**
SKF writes it 6902-2RSH; FAG 6902-2RSR, NSK 6902DDU, NTN 6902LLU and Koyo 6902-2RS. Check the maker's catalogue for the exact seal type.

**What does the number 6902 mean?**
6 is the deep groove ball bearing type, 9 is the thin-section dimension series, and 02 = 15 mm (codes 00 to 03 are fixed: 10, 12, 15 and 17 mm).

**Which bearings have the same bore as 6902?**
6802, 6002, 6202, 6302 also have a 15 mm bore, with different outside diameters and widths.

Source page: https://machinistcharts.com/bearing/6902/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)