AL-KO Replacement Handle 643100
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Replacement grip for AL-KO clamp bolts (type 643100, commonly used on trailer jockey wheels and clamps.
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Model information
- Source
- Printables
- Category
- Mechanical Parts
- License
- Creative Commons — Public Domain
This is a 3D-printable replacement handle for AL-KO clamp bolts (specifically type 643100), often found on trailer jockey wheels and other towing accessories. I use it on my Fendt Bianco Caravan.
The original part has a cylindrical red plastic grip with a rounded end and an internal bore to accommodate a metal L-bolt. This version accurately replicates the shape and proportions, while also being fully parametric in OpenSCAD for easy customization.
Included Files
- alko_handle.scad – fully parametric source model
- alko_handle.stl – default ready-to-print version
LICENSE: MIT License
OpenSCAD Model Overview
The OpenSCAD model uses a few easy-to-edit parameters, allowing you to change the dimensions to suit different bolt types or grip styles.
Parameters:
- l1: Length of cylindrical grip (default: 60 mm)
- d1: Diameter of grip (default: 20 mm)
- r_kugel: Radius of the rounded end (default: d1 / 2)
- bore_diameter: Diameter of internal bore (default: 10 mm)
- bore_depth: Depth of internal bore (default: 50 mm)
Printing Recommendations
- Material: PETG or ASA for strength and outdoor use
- Orientation: Print standing upright with the rounded end on top
- Supports: Not needed if oriented vertically
- Infill: 40% or more recommended