... Coupling, Pillow Block Bearing, Counter, Bevel Gearbox, Swivel Plate and Trunnion Base Worm Gear Bevel Gear Screw Jack Features:* Lifting Speed ... to 90KN As Standard.* Self Locking Trapezoidal Screw, Spiral Bevel Gears, Max Stroke 6000 mm.* Upright and Inverted mounting.* ... Oil Sealing (optional: high/low temperature oil sealing).* Spiral bevel gears: alloy steel,case hardened,be of high rigidity and ...