Metal Lathes — S2M Timing Belts (136 / 138 / 140 / 144 mm) Key benefits Restores accurate, repeatable motion on metal lathes that use an S2M timing profile. Precise 2 mm pitch ensures consistent tooth engagement and reduced slippage. Available in four exact lengths (136 mm, 138 mm, 140 mm, 144 mm) to match common pulley and centerdistance layouts without modification. Lowprofile belt geometry (height 1.63 mm, tooth height 0.76 mm) fits compact drive spaces and maintains reliable power transfer in confined lathe mechanisms. What this product does Serves as a direct replacement timing belt for metal lathe drives and related motion systems that require the S2M profile and the specified lengths. Transmits rotational motion between pulleys with consistent tooth engagement for smooth feed and spindle performance. Important specifications (exact) Type: S2M Available lengths: 136 mm, 138 mm, 140 mm, 144 mm Pitch: 2.0 mm Belt height: 1.63 mm Tooth height: 0.76 mm Why customers need this Wear or damage to a lathe's timing belt causes poor feed accuracy, lost steps, vibration, or slippage. Replacing with the correct S2M belt restores positional accuracy and smooth operation. The precise pitch and tooth geometry reduce backlash and improve repeatability for turning, threading, and contouring tasks. Compatibility and fit Designed to work with pulleys and systems that accept the S2M timing profile. Confirm pulley tooth count and center distance to select the correct belt length (136 / 138 / 140 / 144 mm). Low overall height makes these belts suitable for drives with limited clearance. Performance and handling tips Check pulley condition and alignment before installation; worn pulleys accelerate belt wear. Apply correct tension per your lathe or drive manufacturer's recommendation to avoid overloading the belt. Inspect periodically for cracking, glazing, or missing teeth and promptly to prevent damage to pulleys or drives. Practical applications / use scenarios Replacement drive belt for small or bench metal lathes that use S2M belts and require one of the listed lengths. Part of a lathe retrofit or maintenance kit: swap worn belts to restore feed accuracy in the carriage or crossslide drive. Use in compact CNC metal lathe conversions where space is limited and a lowprofile S2M belt (1.63 mm height) is required for proper clearance. What to check before ordering Confirm your machine uses the S2M tooth profile. Measure the required belt length or verify existing belt length is one of: 136 mm, 138 mm, 140 mm, 144 mm. Verify that a 2.0 mm pitch and the given belt and tooth heights are compatible with your pulleys. This product delivers a direct, specificationmatching replacement for metal lathe drives that require the S2M profile and the listed lengths, restoring reliable motion and feed accuracy without modification.