Custom Timing Pulley

Overview

ORROMFG manufactures custom timing pulleys for synchronous power transmission, precision motion control, and automated machinery applications. Our CNC machined timing pulleys are produced with accurate tooth profiles to match HTD, GT, T, AT, and MXL belt standards, ensuring smooth engagement, minimal backlash, and consistent positioning accuracy in synchronized drive systems.

We machine timing pulleys in aluminum for lightweight high-speed applications, steel for heavy-duty power transmission, and cast iron for cost-effective medium-duty drives. Our CNC turning and milling capability covers pulleys from 10 mm to 500 mm in pitch diameter, with custom hub configurations, keyways, taper lock bushings, and threaded mounting options per customer drawings.

These timing pulleys are widely deployed in CNC machines, 3D printers, packaging equipment, textile machinery, and robotic drive systems. For compatible transmission components, explore our Custom Spur Gear, or learn more about our CNC Machining capabilities.

Key Features

• Accurate tooth profiles — CNC machined to match HTD, GT, T, AT, and MXL belt standards
• Low backlash — Precision tooth machining for synchronized motion with minimal positioning error
• Material options — Aluminum, steel, and cast iron for diverse speed and load requirements
• Custom hub designs — Keyways, taper lock bushings, set screws, and threaded bores per drawing
• Wide size range — Pitch diameters from 10 mm to 500 mm with various tooth counts

Materials

• Aluminum 6061-T6 — Lightweight timing pulleys for high-speed and low-load applications
• Aluminum 7075-T6 — High-strength lightweight pulleys for performance machinery
• 45# Carbon Steel (AISI 1045) — General-purpose steel pulleys for medium to heavy loads
• Cast Iron (GG25) — Cost-effective pulleys for low to medium-speed industrial drives
• Stainless Steel 303/304 — Corrosion-resistant timing pulleys for food and pharmaceutical equipment

Manufacturing Process

1. Billet preparation — Cutting of bar stock or cast blank to rough pulley dimensions
2. CNC turning — Turning of hub, bore, OD, and face features to pulley blank specifications
3. Tooth machining — CNC milling of timing belt tooth profile to standard or custom specifications
4. Hub machining — Keyway broaching, taper lock bushing boring, and set screw tapping
5. Surface treatment — Anodizing for aluminum, black oxide for steel, per customer requirements
6. Balancing — Static and dynamic balancing for high-speed pulley applications
7. Inspection — Tooth profile measurement, pitch verification, and dimensional inspection

For compatible drivetrain shafts, see our Hot Forged Steel Shafts.