รอกโซ่ไฟฟ้า Black Bear (YSH/TSL/YSS Series) 1. Motor Housing Aluminum alloy casting, features rigid structure and light weight. Motor framed with radiant cooling fins, permits 40% (dual speed 40/20%, YSF-series 15%) duty cycle 2. Motor Brake “Electro-Magnetic Brake Controller” -a unique design in its field, R.O.C.Patent No.27417 features simultaneous braking upon release of P.B. even under full load. 3. Limit Switch Fitted at both top and botton ends, shuts off power automatically to prevent load chain from running out. 4. Load Chain Grade 80 case hardened alloy steel chain. 5. Hook Hot forged high tensile steel, rigid and durable, 360°swivel, fitting with safety latch to assure safe lifting. 6. Hoist Bracket Double high-tensile alloy steel plate bracket, features rugged and durable construction. 7. Mechanical Brake Advanced design, assures secure braking even under overload. In conjunction with motor brake, features “DOUBLE BRAKE SYSTEM” for safety and durability in hoist operation. 8. Transformer Power to pendant control reduced to 24V or 48V for safer operation. 9. Magnetic Contactor High performance non-fuse circuit breakers allow frequent trouble cycling with free operation. 10.Phase Error Relay A specially designed electric board prevents motor from running at it reverse phased. 11.Push Button Pendant Offers light and durable switching controls. อ่านเพิ่ม