Move the Torque to the Belt.

Yes. Send the worn sprocket and we measure chain pitch, tooth count, bore, keyway, and hub style on the granite plate. Most ANSI standard sprockets come right off the catalog spec; custom profiles take a measurement pass and a tooth-form rebuild.

Hubbed is the default — separate hub, replace just the rim when the teeth wear, keep the hub forever. Weld-on is for higher-torque applications where you want a one-piece assembly without bolt-circle bolts. Pick hubbed unless you specifically need the strength.

Drag chains run through abrasive material — the material itself is moving past the sprocket teeth — while belt-drive sprockets see only the chain in clean air. The fix isn't "ceramic-faced sprockets" (not actually a real off-the-shelf product category); it's case-carburized 8620 (HRC 58–62 surface) or chrome carbide hardfaced weld overlay on the tooth profile. Either approach delivers 3–5× the life of a plain 1045 sprocket in abrasive drag service. We put these on our Scheduled Replacement Program for customers in mining, agriculture, and biomass-handling.

All four are split-tapered bushings that wedge a hub onto a shaft when bolts are tightened. Taper-Lock (Dodge) is the most common — single-piece tapered sleeve, h7 shaft fit. QD ("Quick Disconnect") has a flange and through-bolt cap screws for easier removal. XT (Dodge) is a heavier-capacity through-bolt design. Split Taper (Browning) is dimensionally similar to Taper-Lock but uses different keyway/bolt patterns. We bore sprockets and sheaves for all four, and we'll spec the right one based on the torque you need to transmit.

For synchronous (timing) belt drives, GT3 is the current Gates standard — it replaces GT2 and GT, but is NOT interchangeable with HTD despite similar tooth depths. GT3 carries higher torque and runs quieter; HTD is the older curvilinear standard, still widely used. For couplings: jaw couplings (Lovejoy-style) for general purpose and shock loads, grid couplings (Falk Steelflex) for cushioned heavy-duty, gear couplings for high-misalignment high-torque, disc couplings for precision/high-RPM, rigid flange for direct-coupled drives where alignment is held within microns. We machine all five.

Yes — common for food-grade and modular-belt drive applications. UHMW sprockets are non-marking, FDA-compliant (in the right grade), and won't damage the chain or modular belt. They wear faster than steel but won't damage adjacent components.

Standard ANSI sprockets in carbon steel: usually 5-7 business days. Hardened alloy or stainless: add a few days for outside heat treat. Fully custom tooth profiles: 1-2 weeks for first-piece. Call 904-388-7772 with your spec and we'll give you a real answer before you commit.