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Low Speed Sprag Type Backstop Clutch For Belt Conveyor
Technical Datas
| Item | NJ300(ND1800) |
| Material | GCr15 |
| Bore dia. | 230-300 mm |
| Outer dia. | 780 mm |
| Width (L) | 290 mm |
| Load capacity | 180000 N.m |
| Darg torque | 110 N.m |
| Weight | 1123 kg |
| Package | Carton box, wooden case or as your requirements |
Features of NJ Backstop
Backstop NJ(NYD,ND) with torque arm are without ball bearings support. The Backstop are arranged on through shafts or shaft ends.
The backstop NJ are used as:
Backstops for low-speed applications.
They are designed for use in inclined conveyor-belt systems, elevators and pumps. Taconite seals protect the backstops when conditions are dirty and dusty.
MODELS NJ65-NJ450
Dimensions and Capacities
| Type | Load Capacity | Inner Race Max. Speed | Drag Torque | Bore | Size (mm) | Weight | ||||||||
| N.m | r/min | N.m | mm | A | B | D | H | h1 | Φ | h | L | L1 | kg | |
| ND16 (NJ65) | 1600 | 150 | 4 | 50-65 | 50 | 6 | 160 | 226 | 16 | 13.5 | 30 | 85 | 106 | 13.5 |
| ND25 (NJ75) | 2500 | 5 | 60-75 | 65 | 170 | 269 | 19 | 16.5 | 35 | 16.1 | ||||
| ND60 (NJ85) | 6000 | 8 | 70-85 | 95 | 9 | 210 | 329 | 29 | 20.5 | 45 | 110 | 135 | 29.2 | |
| ND80 (NJ95) | 8000 | 10 | 80-95 | 105 | 230 | 382 | 32 | 55 | 138 | 37.2 | ||||
| ND110 (NJ110) | 11000 | 15 | 90-110 | 110 | 12 | 270 | 425 | 40 | 26 | 60 | 141 | 46.2 | ||
| ND160 (NJ130) | 16000 | 100 | 20 | 100-130 | 120 | 320 | 506 | 36 | 65 | 130 | 161 | 82.8 | ||
| ND250 (NJ160) | 25000 | 35 | 120-160 | 120 | 20 | 360 | 612 | 32 | 31 | 140 | 183 | 125 | ||
| ND380 (NJ200) | 38000 | 45 | 160-200 | 130 | 430 | 623 | 43 | 41 | 70 | 160 | 207 | 180 | ||
| ND500 (NJ220) | 50000 | 80 | 75 | 160-220 | 238 | 259 | 500 | 820 | 80 | - | 230 | 303 | 351 | |
| ND650 (NJ230) | 65000 | 80 | 85 | 180-240 | 260 | 279 | 540 | 900 | 90 | - | 250 | 323 | 525 | |
| ND900 (NJ250) | 90000 | 50 | 95 | 180-250 | 288 | 323 | 600 | 1000 | 100 | - | 290 | 367 | 675 | |
| ND1250 (NJ270) | 125000 | 100 | 200-270 | 298 | 650 | 1100 | 110 | - | 737 | |||||
| ND1800 (NJ300) | 180000 | 110 | 230-300 | 356 | 335 | 780 | 1300 | 135 | - | 290 | 392 | 1123 | ||
| ND2700 (NJ320) | 270000 | 140 | 250-320 | 386 | 345 | 850 | 1500 | 135 | 320 | 412 | 1425 | |||
| ND3200 (NJ350) | 320000 | 160 | 250-350 | 414 | 360 | 930 | 1600 | 135 | 360 | 426 | 1955 | |||
| ND5200 (NJ420) | 520000 | 220 | 320-420 | 474 | 484 | 1030 | 1800 | 165 | 450 | 550 | 2930 | |||
| ND7000 (NJ450) | 700000 | 250 | 350-450 | 526 | 494 | 1090 | 2000 | 165 | 480 | 574 | 3380 | |||
Mounting
The back driving torque is restrained by the torque arm. The torque arm must not be clamped into position. It must have 0.5 inch play in the axial and in the radial direction.
NJ backstops are supplied for a clearance fit. Set screws on the inner ring are provided for axial retention, shaft collars are not required.
Applications of one way clutch bearing:
One Way Clutches Sprag Type mainly used as Backstop clutches
Reducers,Flender Gearbox,SEW Gearbox
Overrunning clutch: for multiple-machine drives or to separate the inertia of masses of a driven machine from the driving machine after it has been switched off.
Indexing clutch: which turns a shaft step by step, thus achieving indexed material feed or a variable speed.
