Drawworks
Feature:
- All shaft supports are roller bearing. Materials for the shafts are alloy steel.
- Forced lubrication is used for all chains.
-Groove drum: there are ventilating air tube clutches at the high/low speed end of the drum. Circulated water forced cooling mode is adopted for brake hub( the brake disc uses circulated water forced cooling or air cooling). Which has been surface quenched, with good wear resistance, long service lift.
- Sprocket tooth profile surface has been quenched at the intermediate frequency. All shifting clutches are involute spline gear clutch.
- The main brake is ban brake or hydraulic disc brake. Auxiliary brake has been equipped with eddy electromagnetic brake or EATON brake.
Model | JC20 | JC40 | JC40D | JC50 | JC50D | JC70 | JC70D | JC70DS | JC80D |
Noeminal depth rating (m) | 1200- 2000 | 2250- 4000 | 3200- 4000 | 3500- 5000 | 4500 | 4500- 7000 | 4500- 7000 | 4500- 7000 | 8000 |
Rated power (kw) | 300- 400 | 735 | 735 | 1100 | 1100 | 1470 | 1470 | 1470 | 2210 |
Max. fast line pull (KN) | 165 | 275 | 275 | 340 | 340 | 485 | 485 | 485 | 565 |
Diameter of wire rope mm(in) | 29 (1-1/8) | 32 (1-1/4) | 32 (1-1/4) | 35 (1-3/8) | 35 (1-3/8) | 38 (1-1/2) | 38 (1-1/2) | 38 (1-1/2) | 42 (1-5/8) |
Drum size (D x W) (mm) | 560 x 879 | 640 x 1235 | 640 x 1237 | 685 x 1245 | 685 x 1245 | 770 x 1436 | 770 x 1436 | 356 x 1430 | 914 x 1556 |
Brake rim (D x W) (mm) | 1100 x 215 | 1168 x 265 | 1270 x 267 | 1270 x 267 | 1270 x 267 | 1370 x 267 | 1370 x 267 | 1070 x 200 | 1575 x 267 |
Brake disc (D x W) (mm) | 1500 x 76 | 1500 x 76 | 1600 x 76 | 1600 x 76 | 1600 x 76 | 1600 x 76 | |||
Sand line drum (D x W) (mm) | 356 x 1245 | 356 x 1245 | 356 x 1430 | 356 x 1430 | 356 x 1430 | 356 x 1430 | |||
Capacity of sand line drum (D14.5 wire line) | 3500 | 3500 | 4500 | 4500 | 6000 | 6000 | |||
Wrap angle of brake band(degree) | 275 | 280 | 280 | 278 | 278 | 280 | 280 | 280 | 280 |
Auxilliary Brake | DS20 | DS40 YS40 | DS40 YS40 | DS50 YS50 | DS50 YS50 | DS70 YS70 | DS70 YS70 | DS60 | DS80 |
Overall dimensions (L x W x H) (mm) | 4205 x 3000 x 2200 | 6450 x 2560 x 2482 | 6600 x 5820 x 2918 | 7000 x 2955 x 2780 | 6800 x 4537 x 2998 | 7930 x 3194 x 2930 | 7670 x 4585 x 3179 | 7670 x 2457 x 2763 | 8230 x 6710 x 2980 |
Weight (kg) | 14810 | 28240 | 37500 | 45210 | 48000 | 43000 | 61000 | 56500 | 60000 |
