Pick your bearing — 608, 625, 688, 6000-series, 6800-series — and get a printed pillow block that holds it. With the default 608 it lands on the KP08's mounting holes and centre height, so it drops in where a KP08 was. The seat fit is a slider, because every printer prints holes a little differently.
The real generator runs in your browser: set the parameters, then download STEP or STL. Nothing to install, no sign-up.
The first open downloads the CAD engine (about 20 MB).
Each parameter below rebuilds real geometry on every change — this is parametric CAD, not a scaled mesh.
| Parameter | Default | Range | What it does |
|---|---|---|---|
| BearingBEARING | 608 | 623 – 6201, 6800 – 6901 | 14 common deep-groove bearings, sized from the DIN 625 table. |
| Seat fitFIT | +0.10 mm | −0.20 – +0.30 | Added to the bearing OD. +0.10 presses a metal 608 in by hand; negative is a tighter press fit. |
| Bearings side by sideCOUNT | 1 | 1 – 2 | Two bearings in one block for a stiffer shaft. |
| Retaining lipLIP | on | on / off | A 2 mm shoulder the outer ring seats against. |
| Wall over bearingWALL | 3 mm | 2 – 8 | 3 mm is what a KP08 leaves over a 608. |
| Foot thicknessBASE | 5 mm | 3 – 8 | KP08 5, KP000 6, KP001 7. |
| Mounting screwSCREW | M4 | M3 – M6 | M4 matches the KP08's Ø4.5 holes. |
Every parameter can go in the page's link, so one link opens exactly the part you want. Example (6201 bearing (12 × 32 × 10), M5 bolts):https://www.forgent3d.com/en/generators/pillow-block-bearing-holder-generator?BEARING=6201&SCREW=M5
STEP AP214 in millimetres, exact B-rep — it opens directly in SolidWorks, Fusion, FreeCAD, Onshape or Inventor, and goes straight into a CNC quote form. STL for the slicer is one click too.
| This generator | Typical online STL generator | Vendor CAD library | |
|---|---|---|---|
| Any size within the range | Yes | Yes | Catalog sizes only |
| STEP with exact surfaces | Yes | Usually an STL mesh only | Yes |
| Changes the sliders don't cover | “AI edit” on the page | No | No |
| Account needed to download | No | Usually no | Often |
Every parameter is a link parameter; the link below opens the example part. ChatGPT, Claude or any assistant can write one like it from the parameter list (names, units, ranges) at: parameter list (JSON)
Example: https://www.forgent3d.com/en/generators/pillow-block-bearing-holder-generator?BEARING=6201&SCREW=M5
Press “AI edit” in the generator and say what to change — a keyway, holes, a different shape. The AI edits the part's model.py and it rebuilds in your browser, with undo. A few edits a day are free without signing in; to keep the result or go further, copy it into your models and continue with the AI agent.
Edit with AI →For bigger changes, several rounds, or a part you want to keep: copy it into your models (free account). The Forgent3D AI agent reads the model.py, edits it, rebuilds it and checks the result itself.
Copy and continue with the AI agent →Start at the default +0.10 mm: a Printables author found a 22.1 mm seat lets a metal 608 go in and come out without tools. If yours is loose, go tighter — a 2024 study pressed bearings into PETG seats 0.1 and 0.2 mm undersize. Printers differ, so step by 0.05.
It matches the KP08 footprint — 42 mm bolt spacing, 15 mm centre height, Ø4.5 holes — so it bolts to the same holes. It holds a plain 608, not the KP08's self-aligning set-screw insert, so line the shafts up carefully.
Print it lip face down in PETG or ABS; makers report PLA blocks cracking on a tight fit. Press the bearing in with a vise or a clamp, not a hammer — the 0.5 mm lead-in helps it start straight.
https://www.forgent3d.com/en/generators/pillow-block-bearing-holder-generator?BEARING=6201&SCREW=M5 — the seat fit defaults to +0.10 mm on the diameter; tune it after one test print.
Two bearings side by side is a parameter (COUNT=2). For a grease hole or a set-screw, press “AI edit” in the generator and say where; the AI edits the block’s model.py on the page.
Yes. Models you generate and the STL / STEP files you export are yours: print them, sell the prints, or use them in a product. No attribution to Forgent3D is required.
Already have your own .scad file? Convert OpenSCAD to STEP → · Preview it in the browser →
