Tgl48 55 65 Curved Tooth Coupling Bowex Nylon Gear Sleeve Drum Shaped Teeth Oil Pump Motor Ms AC Sam Dk Coupler for Oil Pump Motor. Customized Bore Diameter: Supports customized bore diameter ranging from 6mm to 125mm. Flexible Structure Design: Features a flexible structure with high concentricity and zero rotational clearance. High-Quality Material: Constructed from 45# steel with blackening treatment for wear and corrosion resistance. Durable Elastic Pad: Equipped with high-quality polyurethane elastic pads for buffering and anti-corrosion. Efficient Assembly: Simple structure allows for easy disassembly and assembly, saving labor time. Advanced Manufacturing: Produced in a 12,000 sqm workshop with over 160 CNC equipment units. Large Production Capacity: Annual production capacity reaches 3 million sets of couplings. Professional R&D Team: Backed by a dedicated team of over 120 experts in design and quality inspection.