HTD 5M 3mm - 15mm Bore Timing Belt Idler Pulley 12T - 35T Tooth & Toothless Bore Diameter & Applicable Belt Width:5 mm & 15mm and 20 pieces allow single-unit

and 20 pieces allow single-unit prototyping or small-batch production runs

How do I choose the right thickness and width for my project

Length options run from 1 metre (≈3

The seat type is a ball seat (radius seat) to match BMW OEM wheel specifications

The 7×10 cm (70×100 mm) or 8×12 cm (80×120 mm) boards both provide enough clearance for the shield outline plus a small border for handling

HTD 5M 3mm - 15mm Bore Timing Belt Idler Pulley 12T - 35T Tooth & Toothless Bore Diameter & Applicable Belt Width:5 mm & 15mm and 20 pieces allow single-unitHTD 5M Timing Belt Idler Pulley Precise Tension Control for DIY Automation When your timing belt slips or loses tension mid project, the entire motion system suffers missed steps, vibration, and failed prints. Whether you're building a 3D printer, CNC router, or custom conveyor, the right idler pulley keeps your HTD 5M belt running taut and true. These HTD 5M timing belt idler pulleys are engineered for makers, hobbyists, and small workshop builders