2392-8M-50 Timing Belt QD-J What does the XH in

What does the XH in 1540XH200 mean

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The Continental CTD14M-1568-125 SYNCHROCHAIN CARBON is a synchronous timing belt with 14M-pitch profile

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"name":"Gates SS 8MX-28S-21 MPB Poly Chain GT Sprockets - Stainless Steel 77699228"

2392-8M-50 Timing Belt QD-J What does the XH in2392 8M 50 Timing Belt The 2392 8M 50 is a timing belt from D&D Global's Dura Sync Torque 8M Series line. It transmits power positively with no slip, holding timing between shafts on synchronous drives. Specification Value Part Number 2392 8M 50 Belt Type Timing Belt Tooth Profile 8M HTD (curvilinear) Tooth Pitch 8 mm Number of Teeth 299 Belt Width 50 mm Pitch Length 2392 mm (Pitch Length) Construction Chloroprene (Neoprene), Fiberglass cord, fabric