Nippon Gear Co.
Nippon Gear Screw Jack
Manufacturer: Nippon Gear Co., Ltd.
Features
- Capacity: 10kN/1000kN
- The jack consists of a high-precision worm gear and a trapezoidal screw; and its self-locking function works at any position within a stroke.
- The lifting screw is made of carbon steel (right-hand thread). The jack can prevent rotation by using its lifting screw with keyway, and anti-rotation key.
- The speed reduction mechanism adopts grease lubrication as standard, realizing a long service life with smooth operation.
- Wide-ranging options are available, including dustproof bellows to protect the lifting screw, hand wheel for manual operation, trunnion base, limit switch for control, and RC encoder.
Specifications
| Series/Size Code | J0G | J1G | J2G | J3G | JGA | J4A | J5A | J6A | JFA | J7A | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Capacity | 10kN | 25kN | 50kN | 100kN | 150kN | 200kN | 300kN | 500kN | 750kN | 1000kN | |
| Lifting screw diameter | 20mm | 25mm | 40mm | 50mm | 55mm | 63mm | 85mm | 118mm | 132mm | 150mm | |
| Lifting screw lead | 4mm | 5mm | 8mm | 10mm | 10mm | 12mm | 16mm | 16mm | 16mm | 20mm | |
| Worm gear ratio | H | 5 | 6 | 6 | 8 | 8 | 8 | 10 2/3 | 10 2/3 | 10 2/3 | 12 2/3 |
| L | 24 | 24 | 24 | 24 | 24 | 24 | 32 | 32 | 38 | 36 | |
| Effciency | H | 0.22 | 0.21 | 0.21 | 0.20 | 0.19 | 0.2 | 0.2 | 0.15 | 0.14 | 0.16 |
| L | 0.13 | 0.13 | 0.12 | 0.15 | 0.14 | 0.15 | 0.13 | 0.1 | 0.09 | 0.1 | |
| Maximum allowable power per jack | H | 0.75kW | 1.3kW | 2.3kW | 3.1kW | 2.8kW | 4kW | 6.5kW | 11kW | 15kW | 17kW |
| L | 0.4kW | 0.5kW | 1.1kW | 1.8kW | 2.8kW | ||||||
| Input shaft torque at no load (b) | 0.3N・m | 1N・m | 2N・m | 3N・m | 4N・m | 5N・m | 10N・m | 20N・m | 30N・m | 40N・m | |
| Torque coefficient (a) | H | 0.57 | 0.63 | 0.99 | 0.97 | 1.05 | 1.2 | 1.2 | 1.57 | 1.69 | 1.61 |
| L | 0.21 | 0.25 | 0.43 | 0.44 | 0.48 | 0.54 | 0.6 | 0.8 | 0.74 | 0.93 | |
| Required input torque at maximum load | H | 6.0N・m | 16.8N・m | 51.7N・m | 100.1N・m | 162N・m | 245N・m | 369N・m | 806N・m | 1298N・m | 1653N・m |
| L | 2.4N・m | 7.4N・m | 23.7N・m | 47.4N・m | 76N・m | 113N・m | 189N・m | 420N・m | 588N・m | 970N・m | |
| “Speed coefficient (c) (screw lead per rotation of input shaft)” | H | 0.8mm | 0.83mm | 1.33mm | 1.25mm | 1.25mm | 1.5mm | 1.5mm | 1.5mm | 1.5mm | 1.58mm |
| L | 0.17mm | 0.21mm | 0.33mm | 0.42mm | 0.42mm | 0.5mm | 0.5mm | 0.5mm | 0.42mm | 0.56mm | |
| Maximum allowable input rotation speed | H | 1800min-1 | 1800min-1 | 1800min-1 | 1800min-1 | 870min-1 | 810min-1 | 795min-1 | 535min-1 | 530min-1 | 510min-1 |
| L | 1800min-1 | 1800min-1 | 1800min-1 | 1800min-1 | 1055min-1 | 995min-1 | 825min-1 | 555min-1 | 540min-1 | 400min-1 | |
| Maximum input rotation speed at maximum load | H | 1190min-1 | 735min-1 | 420min-1 | 295min-1 | 165min-1 | 155min-1 | 165min-1 | 130min-1 | 110min-1 | 95min-1 |
| L | 1600min-1 | 640min-1 | 440min-1 | 360min-1 | 350min-1 | 335min-1 | 325min-1 | 245min-1 | 240min-1 | 165min-1 | |
| Anti-rotation key torque at maximum load | 15N・m | 45N・m | 140N・m | 360N・m | 600N・m | 920N・m | 1850N・m | 4400N・m | 7450N・m | 11200N・m | |
| Input shaft allowable overhang load | 300N | 450N | 700N | 1200N | 1200N | 1200N | 2200N | 2500N | 2500N | 3000N | |
| Amount of filled grease | 0.1Kg | 0.25kg | 0.6kg | 0.8kg | 1.0kg | 1.2kg | 2.5kg | 4kg | 7.5kg | 11kg | |
| Operating temperature range | -15〜80℃ | -15〜80℃ | -15〜80℃ | -15〜80℃ | -15〜80℃ | -15〜100℃ | -15〜100℃ | -15〜100℃ | -15〜100℃ | -15〜100℃ | |
