# Flange block KFL08 envelope with a 608 pocket

> What are the dimensions of a KFL08 flange bearing?

- Category: Hardware › Motion
- Kind: Hardware
- Basis: KFL08 two-bolt flange envelope: 55 × 25 flange, M5 holes 37 apart, Ø22 pocket at the 608 OD
- Page: https://xemstudio.com/objects/flange-block-kfl08/ · JSON: https://xemstudio.com/api/geometry?object=flange-block-kfl08 · Plain text: https://xemstudio.com/objects/flange-block-kfl08/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses

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

## Notes

- A two-bolt flange 55 long × 25 wide with round ends, 9 thick, with a Ø30 boss rising to 12 overall.
- A Ø22 pocket (608 OD) runs through the boss and flange on the centre.
- Two Ø5.5 holes (M5 clearance) 37 mm apart.

## 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 |
|---|---|---|---|---|
| bearing pocket | Ø22 | 608 bearing | press | flange-block-* |
| mounting holes | Ø5.5 | M5 screw clearance | designed | flange-block-* |

## Sizes

| feature | value_mm |
|---|---|
| flange | 55 × 25 × 9 |
| boss | Ø30 × 12 |
| bearing pocket | Ø22 through |
| mounting holes | 2 × Ø5.5 at 37 |

## Where the files are

- McMaster-Carr: [Mounted bearings (free STEP per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/mounted-ball-bearings/) — STEP, PDF — McMaster-Carr site terms (verify at link)
- McMaster-Carr: [Sleeve bearings (free STEP per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/sleeve-bearings/) — STEP, PDF — McMaster-Carr site terms (verify at link)
- OpenBuilds: [Solid V wheel kit](https://openbuildspartstore.com/solid-v-wheel-kit/) — web, STEP — OpenBuilds site (verify at link)
- Wikipedia: [Plain bearing](https://en.wikipedia.org/wiki/Plain_bearing) — web — CC BY-SA 4.0 (text)
- Long Earth Society: [Engine and rig builds](https://longearthsociety.com/engineering/) — web, video — LES site

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

Index: https://xemstudio.com/files/hardware/flange-block-kfl08/index.json

- flange-block-kfl08: [STEP](https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/flange-block-kfl08.step) · [STL](https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/flange-block-kfl08.stl) — KFL08-envelope two-bolt flange block: Ø22 pocket for a 608 bearing, two Ø5.5 (M5 clearance) holes 37 mm apart

## How it fits

### Goes in or on
- [Metric shafts Ø3 to Ø10 with D-flats and clip grooves](https://xemstudio.com/objects/metric-shafts/): Ø8 shaft through the 608

### Connects to
- [608 ball bearing](https://xemstudio.com/objects/608-bearing/): 608 OD in the Ø22 pocket

### Alternatives
- [Pillow block KP08 envelope with a 608 pocket](https://xemstudio.com/objects/pillow-block-kp08/): same 608 pocket, sits on a base

## Questions

**What is the KFL08 bolt spacing?**

37 mm between the two M5 holes (Ø5.5 clearance) on a 55 × 25 flange.

**What bearing goes in the KFL08 file?**

A 608 (8 × 22 × 7) in the Ø22 pocket.

## Fits with

- [Pillow block KP08 envelope with a 608 pocket](https://xemstudio.com/objects/pillow-block-kp08/)
- [608 ball bearing](https://xemstudio.com/objects/608-bearing/)
- [Metric shafts Ø3 to Ø10 with D-flats and clip grooves](https://xemstudio.com/objects/metric-shafts/)
- [Set-screw shaft collars Ø3 to Ø12](https://xemstudio.com/objects/shaft-collars/)