# igus drylin RJ4JP-01-08 linear bearing: Ø8 bore, Ø15 × 24 mm and retaining-ring grooves

> What are the igus drylin RJ4JP-01-08 dimensions and groove positions?

- Category: Hardware › Bearings, rails & motion
- Kind: Modern device
- Basis: igus RJ4JP-01-08 product data (d, D, L, B, W, N).
- Page: https://xemstudio.com/objects/igus-drylin-rj4jp-01-08/ · JSON: https://xemstudio.com/api/geometry?object=igus-drylin-rj4jp-01-08 · Plain text: https://xemstudio.com/objects/igus-drylin-rj4jp-01-08/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 24.0 | 15.0 | 15.0 |

**Exact dimensions.** Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part.

## Notes

- Datum: axis on Z, centred on X and Y, one end face on z=0.
- Bore Ø8.00 (+0/+0.04 per igus), outer Ø15.00, length 24.00.
- Two retaining-ring grooves Ø14.30 × 1.10 wide; outer flanks 17.50 apart, symmetric: z=3.25..4.35 and 19.65..20.75.
- Same outside dimensions as an LM8UU / drylin R ISO 10285 series bearing.
- Exact nominal mm; outer-diameter tolerance is not published.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| Bore | Ø8.00 | 8 mm h-tolerance linear shaft | run | all |
| Outer diameter | Ø15.00 × 24.00 | bearing seat in a housing or carriage | press | all |
| Grooves | Ø14.30 × 1.10, 17.50 span | DIN 471 15 mm retaining rings | designed | all |

## Sizes

| dimension | value (mm) |
|---|---|
| d (bore) | 8.00 |
| D (outer) | 15.00 |
| L (length) | 24.00 |
| B (groove span) | 17.50 |
| W (groove width) | 1.10 |
| N (groove Ø) | 14.30 |

## Where the files are

- igus: [drylin RJ4JP-01-08 product page](https://www.igus.eu/product/990) — web — Publisher's page; dimensions are facts
- HC Maschinentechnik: [RJ4JP-01-08 bearing dimensions](https://hc-maschinentechnik.de/RJ4JP-bearing) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/igus-drylin-rj4jp-01-08/index.json

- igus-drylin-rj4jp-01-08: [STEP](https://xemstudio.com/files/hardware/igus-drylin-rj4jp-01-08/igus-drylin-rj4jp-01-08.step) · [STL](https://xemstudio.com/files/hardware/igus-drylin-rj4jp-01-08/igus-drylin-rj4jp-01-08.stl) — igus drylin RJ4JP-01-08 linear bearing: Ø8 bore, Ø15 × 24 mm and retaining-ring grooves

## Questions

**What size is the igus RJ4JP-01-08?**

Ø8.00 bore, Ø15.00 outside, 24.00 long.

**Is it the same size as an LM8UU?**

Yes: Ø15 × 24 on an 8 mm shaft, with ring grooves Ø14.30 × 1.10 whose outer flanks are 17.50 apart.

## Fits with

- [LM8UU linear bearing Ø8 × Ø15 × 24](https://xemstudio.com/objects/lm8uu-bearing/)
- [Linear shafts Ø3 to Ø25 mm (h6), 100 to 1000 mm long](https://xemstudio.com/objects/linear-shafts-h6/)
- [Linear ball bushings LM..UU and LM..LUU (LM8UU, LM10UU, LM12UU, LM16UU, LM20UU, long LUU): bore, OD, length, ring-groove numbers](https://xemstudio.com/objects/linear-ball-bushings-lm-uu-luu/)
- [Retaining rings DIN 471 (external, for shafts): ring dimensions and groove diameter d2 × width m, 3 to 100 mm](https://xemstudio.com/objects/retaining-rings-din-471-external/)
- [Pillow block KP08 envelope with a 608 pocket](https://xemstudio.com/objects/pillow-block-kp08/)