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Steering Gear

  •  Steering Gear
  •  Steering Gear

Through our R&D efforts, the rotary vane steering gear eliminates the problem of internal leakage which plagues many hydraulic steering gears. Our marine steering gears, approved by CCS, BV, etc., are widely used accessories for a number of different vessels. With high maneuverability, the rudder angle of the rotary vane hydraulic steering gear for ships has a maximum range of ±65°. The rated torque can be obtained at any rudder angle to ensure sufficient maneuverability in narrow wharf areas.

Features of the Rotary Vane Steering Gear
1. Compact, taking up little floor space.
2. Wide rudder angle range, up to ±65°.
3. Easy installation for all kinds of rudders. No need of rudder bearing.
4. Good sealing performance with rudder deviation speed less than 0.5°/min.
5. Low noise and good impact resistance.

Compared with rotary vane steering gears from other Chinese steering gear manufacturers, our product has the following advantages
1. High reliability: Even after 3,000 hours of continuous reliability test, no failures occurred.
2. Environmental adaptability: Results from both the environmental test and the electromagnetic compatibility test met the requirements of GJB150A-2009 standards.
3. High performance and low internal leakage. Leakage volume is half that of industry standards and the products mass is 85-90% of industry standards, leading to low heat generation and high efficiency.

Technical Data of the Rotary Vane Steering Gear
Rated torque: 10~900 Kn.m
Dia. of rudder stock: Ø80~Ø430 mm
Max. rudder angle by electric: ±35°, ±45°,±65°
Max. rudder angle by machinery: ±36.5°, ±46.5°,±66.5°
Time from -35° to +30°, ≤28s by one pump; ≤14s by two pumps
Time from -45° to +40°, ≤25s by one pump (for river);
Max. working pressure: 5~8 MPa
Set pressure of safe valve: 6.25~10 MPa

  • Hydraulic power unit (HPU)

  • Rudder actuator

  • Hydrodynamic test system of steering gear

Technical Parameters (rudder angle ±35°)
Rudder actuator Working Torque(kN.m) Max. rudder stock diameter(mm) Diameter (mm) Height (mm) Max. radial load(KN) Max. axial load(KN)
YDZ20/2 20 Φ180 囗470×470 340 260 130
YDZ25/2 25 Φ180 囗470×470 420 260 130
YDZ31.5/2 31.5 Φ180 囗470×470 420 260 150
YDZ40/2 40 Φ180 囗470×470 480 260 150
YDZ50/2 50 Φ180 Φ730 400 350 150
YDZ63/2 63 Φ180 Φ730 400 350 150
YDZ80/2 80 Φ180 Φ730 480 350 150
YDZ100/2 100 Φ230 Φ810 580 350 240
YDZ125/2 125 Φ230 Φ810 620 350 240
YDZ160/2 160 Φ280 Φ920 610 850 360
YDZ200/2 200 Φ305 Φ1045 660 900 450
YDZ250/2 250 Φ305 Φ1045 660 900 450
YDZ320/2 320 Φ305 Φ1045 780 900 450
YDZ400/2 400 Φ360 Φ1250 800 1500 560
YDZ500/2 500 Φ360 Φ1250 800 1500 560
YDZ630/2 630 Φ360 Φ1250 920 1500 560
YDZ800/3 800 Φ390 Φ1480 1020 2300 605
YDZ1000/4 1000 Φ450 Φ1700 1130 2900 700
YDZ1250/5 1250 Φ450 Φ1700 1230 2900 700
Technical Parameters(rudder angle ±65°)
Rudder actuator Working Torque(kN.m) Max. rudder stock diameter(mm) Diameter (mm) Height (mm) Max. radial load(KN) Max. axial load(KN)
YDZ16/2 16 Φ140 囗470×470 400 260 130
YDZ20/2 20 Φ140 囗470×470 400 260 130
YDZ25/2 25 Φ140 囗470×470 460 260 130
YDZ31.5/2 31.5 Φ180 Φ730 420 350 150
YDZ40/2 40 Φ180 Φ730 420 350 150
YDZ50/2 50 Φ210 Φ820 580 350 150
YDZ63/2 63 Φ210 Φ820 580 350 240
YDZ80/2 80 Φ210 Φ820 550 350 240
YDZ100/2 100 Φ280 Φ820 620 850 360
YDZ125/2 125 Φ280 Φ1045 660 900 450
YDZ160/2 160 Φ280 Φ1045 660 900 450
YDZ200/2 200 Φ280 Φ1045 750 900 450
YDZ250/2 250 Φ305 Φ1050 620 1000 450
YDZ320/2 320 Φ305 Φ1050 750 1000 450
YDZ400/2 400 Φ360 Φ1250 900 1500 560
YDZ500/2 500 Φ390 Φ1480 900 2200 605
YDZ630/2 630 Φ390 Φ1480 900 2200 605

We offer customized specifications.

Schematic diagram for rudder actuator
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