Xem Studiomeasured geometryBearing housings and linear supports: KP08, KFL08, SK8, SC8UU, V-wheels, sleeve bushings
What are KP08 pillow block and SK8 rod support dimensions? · Hardware · basis: Catalogue dimensions for the common 8 mm printer/CNC parts (KP08, KFL08, SK8, SC8UU), OpenBuilds V-wheel (23.89 × 10.23), and standard sleeve-bushing sizes; printed versions take a bare 608/625/LM8UU
Long Earth Society build part. Flywheel shaft blocks and displacer guides on the LES engines. The engines · all LES parts
- sizes
- 6 in table
Notes
- KP08: Ø8 self-aligning insert bearing in a cast housing; 15 mm centre height, base 55 × 13, two Ø5 holes 42 mm apart. KFL08: 2-bolt flange, Ø8, holes 37 mm apart, 25 mm wide. Both also exist in KP000/KFL000 (10 mm) and KP001 (12 mm).
- SK8: Ø8 rod clamp, 20 mm centre height, base 42 × 14 with two Ø5.5 holes 32 mm apart, M4 pinch screw. SHF8 is the flanged version. SC8UU: an LM8UU in an aluminium block, 34 × 30 × 22, four M4 on 24 × 18, 11 mm from base to rod centre. SC8LUU holds an LM8LUU at 58 long.
- V-wheel (OpenBuilds): Ø23.89 OD, 10.23 wide, 90° groove, two 625 bearings with a 1 mm spacer; runs in V-slot (6.2 mm) extrusion. Eccentric spacers of Ø7.1 adjust preload.
- Sleeve bushings: Ø3×5, 4×6, 5×8, 6×10, 8×12, 10×14 (ID × OD) in bronze (oiled), graphite-bronze (dry), PTFE-lined. Press into a printed hole at OD − 0.1; shaft runs at ID + 0.02. Printed PETG bushings run fine at low speed: hole = shaft + 0.2.
- LES: KP08 blocks under the flywheel shaft on the big engines; SK8 + 8 mm rod as a displacer guide; bushings in every printed link.
Sizes
| part | bore_mm | centre_height_mm | footprint_mm | holes |
|---|---|---|---|---|
| KP08 | 8 | 15 | 55 × 13 | 2 × Ø5 @ 42 |
| KFL08 | 8 | flange | 55 × 25 | 2 × Ø5 @ 37 |
| SK8 | 8 | 20 | 42 × 14 | 2 × Ø5.5 @ 32 |
| SC8UU | 8 | 11 | 34 × 30 × 22 | 4 × M4 @ 24 × 18 |
| V-wheel | 2 × 625 | Ø23.89 × 10.23 | — | M5 axle |
| bushings | 3–10 | — | OD 5–14 | press fit OD − 0.1 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| McMaster-Carr | Mounted bearings (free STEP per part, for your own design use; no redistribution) | STEP, PDF | McMaster-Carr site terms verify |
| McMaster-Carr | Sleeve bearings (free STEP per part, for your own design use; no redistribution) | STEP, PDF | McMaster-Carr site terms verify |
| OpenBuilds | Solid V wheel kit | web, STEP | OpenBuilds site verify |
| Wikipedia | Plain bearing | web | CC BY-SA 4.0 (text) |
| Long Earth Society | Engine and rig builds | web, video | LES site |
Free files
★ Free files 13 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| pillow-block-kp08 | KP08 pillow block: Ø8 insert bearing, 15 mm centre height, 55 × 13 base, 42 mm hole centres (M5) | STEP · STL |
| flange-block-kfl08 | KFL08 two-bolt flange block: Ø8, 37 mm hole centres | STEP · STL |
| rod-support-sk8 | SK8 rod support: Ø8 clamp, 20 mm centre height, 32 mm base holes (M5), M4 clamp screw | STEP · STL |
| slide-block-sc8uu | SC8UU slide block: LM8UU pocket, 34 × 30 × 22, 24 × 18 mm M4 pattern, 11 mm centre height | STEP · STL |
| vwheel-openbuilds-23-9 | OpenBuilds-style V-wheel: Ø23.89 × 10.23, 90° V groove, pocket for two 625 bearings | STEP · STL |
| bushing-3x5x6 | sleeve bushing Ø3 ID × Ø5 OD × 6 (bronze/graphite/PTFE sizes) | STEP · STL |
| bushing-4x6x8 | sleeve bushing Ø4 ID × Ø6 OD × 8 (bronze/graphite/PTFE sizes) | STEP · STL |
| bushing-5x8x8 | sleeve bushing Ø5 ID × Ø8 OD × 8 (bronze/graphite/PTFE sizes) | STEP · STL |
| bushing-5x8x12 | sleeve bushing Ø5 ID × Ø8 OD × 12 (bronze/graphite/PTFE sizes) | STEP · STL |
| bushing-6x10x10 | sleeve bushing Ø6 ID × Ø10 OD × 10 (bronze/graphite/PTFE sizes) | STEP · STL |
| bushing-8x12x12 | sleeve bushing Ø8 ID × Ø12 OD × 12 (bronze/graphite/PTFE sizes) | STEP · STL |
| bushing-8x12x20 | sleeve bushing Ø8 ID × Ø12 OD × 20 (bronze/graphite/PTFE sizes) | STEP · STL |
| bushing-10x14x15 | sleeve bushing Ø10 ID × Ø14 OD × 15 (bronze/graphite/PTFE sizes) | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=bearing-housings-and-rod-supports
Fits with
Questions
What are KP08 dimensions?
Ø8 bore, 15 mm centre height, 55 mm long × 13 mm wide base, two Ø5 mounting holes 42 mm apart, 29 mm overall height.
What are SK8 rod support dimensions?
20 mm from base to rod centre, 42 × 14 base, holes 32 mm apart (M5), M4 clamp screw; 32 mm tall.
What size is an OpenBuilds V-wheel?
23.89 mm OD, 10.23 mm wide, 90° V groove, two 625 (5 × 16 × 5) bearings with a 1 mm precision shim between.
What bushing size for a 5 mm shaft?
Ø5 ID × Ø8 OD, 8 or 12 mm long, bronze or graphite; press into a Ø7.9 hole.