Tamiya 70272 Differential gear unit for STEM construction
This differential gear unit is a dedicated spare for Tamiya educational construction projects. It uses a bevel-gear arrangement to allow differential rotation between driven shafts, so inner and outer shafts can rotate at different speeds during turns. The transparent case gives direct visual access to the internal bevel gears, which is useful for inspection, teaching gear geometry, and checking mesh while assembling educational models.
The internal gears are furnished with low-friction profiles and the power is transmitted through three metal 3 mm hex shafts. The unit is designed to integrate with separately sold Universal Plates and Universal Arms from the Tamiya Educational Construction Series, providing a straightforward mechanical solution where a compact differential is required.
Serviceable features include removable screws for access and a pre-applied lubricant that reduces initial break-in wear. The component is intended for builders and collectors who need a verifiable, observable differential mechanism for display models, classroom builds, or parts replacement in compatible assemblies.
Drive type: bevel differential unit
Gear ratio: 3.17:1
Case material: transparent plastic
Shafts: three 3 mm hex shafts, 50 mm length
Included components: low-friction gears, 3 x hex shafts, screws, grease
The 70272 differential provides a compact, inspectable solution for STEM assemblies and replacement needs. Its transparent case and metal hex shafts make it suitable for builders who prioritise serviceability and visual verification of gear action.
