ML/MLLYONGJING
ML/MLL Jaw Coupling .
ML / MLL Plum-Blossom (Jaw) Elastic Coupling, GB/T 5272
ML is a plum-blossom (jaw) elastic coupling to GB/T 5272: two jaw hubs with a spider element between them; when the shafts run out of line the spider deforms elastically and compensates the misalignment automatically. Per Yongjing data the rated torque is 25–31,500 N·m, permissible speed 950–15,300 rpm, operating temperature −35…+80 °C; the series suits frequent starts, reversing, medium and high speeds and duties with high reliability requirements. MLL is the brake-drum version: MLL-I split, MLL-II one-piece, 140–25,000 N·m at −20…+80 °C. GOST counterpart: spider couplings per GOST 14084-93 / GOST R 50894-96.
Applications
- Pumps and fans
- Compressors
- Gearmotors
- Drives with frequent starts and reversing
- Winches and hoists with brake drum (MLL)
Specifications
- Rated torque
- ML 25–31,500 N·m; MLL 140–25,000 N·m (Yongjing data)
- Permissible speed
- 950–15,300 rpm (Yongjing data)
- Elastic element
- spider clamped between the hub jaws and loaded in radial compression (Yongjing data)
- Operating temperature
- ML −35…+80 °C; MLL −20…+80 °C (Yongjing data)
- Misalignment compensation
- automatic, by elastic deformation of the spider (Yongjing data)
- Versions
- ML basic; MLL-I with split brake drum; MLL-II with one-piece brake drum (Yongjing data)
- Standard
- GB/T 5272
- GOST counterpart
- GOST 14084-93, GOST R 50894-96 (spider couplings); European equivalent KTR ROTEX