Structure Characteristics
  • Twin countershaft in main case, tri-countershaft in auxiliary case; power split, large load capacity and high reliability.
  • Mainshaft and gears on it are floating, no needle bearings between the gears and the shaft and high efficiency in power transfer.
  • Gears adopt thin-and-fine teeth design (contact ratio ε>2), smooth engagement and low noise.
  • Fully synchronized: in main case, double taper faced synchronizer, large synchro-capacity and flexible in gear shifting; in auxiliary case, lock-pin synchronizer, high-performance & non-metallic friction material for friction taper surfaces and high reliability.
  • Large range of gear ratios meets different road conditions, and strong climbing ability.
  • Combined design of main and auxiliary cases, small ratio steps and good fuel efficiency.
  • A variety of forms for power taking-off meet different power-output demands of all refitted trucks.
  • Single H or double H, single-lever or double-lever operating mechanism can be realized.
Technical Parameter
Models Torque(Nm) Gear Ratios Weight (Kg) Oil Capacity (L)
Crawl 1 2 3 4 5 6 7 8 R
9JSS180T 1800 14.05 8.38 6.22 4.57 3.40 2.46 1.83 1.34 1.00 14.05 375 16
9JSS220T 2200 14.05 8.38 6.22 4.57 3.40 2.46 1.83 1.34 1.00 14.05 375 16
9JSS260T 2600 14.05 8.38 6.22 4.57 3.40 2.46 1.83 1.34 1.00 14.05 375 16