# 625 bearing dimensions

A 625 bearing is 5 mm bore × 16 mm outside diameter × 5 mm wide (0.197 × 0.630 × 0.197 in). The sealed version is 625-2RS; the shielded version is 625-ZZ.

## 625 data

- Type: deep groove ball bearing, 62 series (light)
- Bore d: 5 mm (0.1969 in)
- Outside diameter D: 16 mm (0.6299 in)
- Width B: 5 mm (0.1969 in)
- Bore code: Under 10 mm bore the last digit is the bore itself: 5 = 5 mm
- Sealed: 625-2RS; shielded: 625-ZZ; open: 625

## Designations by maker

| Maker | Sealed | Shielded |
|---|---|---|
| SKF | 625-2RSH | 625-2Z |
| FAG (Schaeffler) | 625-2RSR | 625-2ZR |
| NSK | 625DDU | 625ZZ |
| NTN | 625LLU | 625ZZ |
| Koyo (JTEKT) | 625-2RS | 625ZZ |
| Timken | 625-2RS | see catalogue |

## Same 5 mm bore, other series

| Bearing | Series | OD mm | Width mm |
|---|---|---|---|
| 605 | extra-light | 14 | 5 |
| 625 | light | 16 | 5 |


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

## FAQ

**What size is a 625 bearing?**
5 mm bore, 16 mm outside diameter and 5 mm wide, which is 0.197 × 0.630 × 0.197 in.

**What does 2RS mean on a 625 bearing?**
625-2RS has rubber contact seals on both sides. 625-ZZ (also written 625-2Z) has metal shields on both sides. Both have the same 5 × 16 × 5 mm dimensions.

**Is 625-2RS the same as 625-ZZ?**
They are the same size and interchangeable in a housing. The sealed 625-2RS keeps out fine dirt and water better; the shielded 625-ZZ runs with less friction.

**What is the SKF equivalent of 625-2RS?**
SKF writes it 625-2RSH; FAG 625-2RSR, NSK 625DDU, NTN 625LLU and Koyo 625-2RS. Check the maker's catalogue for the exact seal type.

**What does the number 625 mean?**
6 is the deep groove ball bearing type, 2 is the light dimension series, and under 10 mm bore the last digit is the bore itself: 5 = 5 mm.

**Which bearings have the same bore as 625?**
605 also have a 5 mm bore, with different outside diameters and widths.

Source page: https://machinistcharts.com/bearing/625/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)