# 627 bearing dimensions

A 627 bearing is 7 mm bore × 22 mm outside diameter × 7 mm wide (0.276 × 0.866 × 0.276 in). The sealed version is 627-2RS; the shielded version is 627-ZZ.

## 627 data

- Type: deep groove ball bearing, 62 series (light)
- Bore d: 7 mm (0.2756 in)
- Outside diameter D: 22 mm (0.8661 in)
- Width B: 7 mm (0.2756 in)
- Bore code: Under 10 mm bore the last digit is the bore itself: 7 = 7 mm
- Sealed: 627-2RS; shielded: 627-ZZ; open: 627

## Designations by maker

| Maker | Sealed | Shielded |
|---|---|---|
| SKF | 627-2RSH | 627-2Z |
| FAG (Schaeffler) | 627-2RSR | 627-2ZR |
| NSK | 627DDU | 627ZZ |
| NTN | 627LLU | 627ZZ |
| Koyo (JTEKT) | 627-2RS | 627ZZ |
| Timken | 627-2RS | see catalogue |

## Same 7 mm bore, other series

| Bearing | Series | OD mm | Width mm |
|---|---|---|---|
| 607 | extra-light | 19 | 6 |
| 627 | light | 22 | 7 |


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

## FAQ

**What size is a 627 bearing?**
7 mm bore, 22 mm outside diameter and 7 mm wide, which is 0.276 × 0.866 × 0.276 in.

**What does 2RS mean on a 627 bearing?**
627-2RS has rubber contact seals on both sides. 627-ZZ (also written 627-2Z) has metal shields on both sides. Both have the same 7 × 22 × 7 mm dimensions.

**Is 627-2RS the same as 627-ZZ?**
They are the same size and interchangeable in a housing. The sealed 627-2RS keeps out fine dirt and water better; the shielded 627-ZZ runs with less friction.

**What is the SKF equivalent of 627-2RS?**
SKF writes it 627-2RSH; FAG 627-2RSR, NSK 627DDU, NTN 627LLU and Koyo 627-2RS. Check the maker's catalogue for the exact seal type.

**What does the number 627 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: 7 = 7 mm.

**Which bearings have the same bore as 627?**
607 also have a 7 mm bore, with different outside diameters and widths.

Source page: https://machinistcharts.com/bearing/627/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)