Helac Hydraulic Rotary Actuators Cylinder L10 L20 L30 T20 T30 Rack and Pinion Swing Cylinder High Torque Rotary L20-4.5 8.2 15 25 39

• Customization: Available
• Certification: CE, ISO9001
• Pressure: High Pressure
• Model NO.: L20
• Acting Way: Double Acting
• Working Method: Rotary
• Adjusted Form: Switching Type
• Structure: Rack and Pinion Type
• Material: Carbon Steel
• Transport Package: Carton and Wooden Box
• Specification: 30-30-50
• Trademark: yuken
• Origin: China
• HS Code: 8412909090
• Production Capacity: 10000
• Package Size: 50.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 50.000kg

Product Description

HBOETH's innovative sliding-spline technology converts 
linear piston motion into powerful shaft rotation. Each actuator
is comprised of a housing and two moving parts - the
central shaft and piston. Helical spline teeth on the shaft
engage matching teeth on the piston's inside diameter.
A second set of helical splines on the piston's outside
diameter mesh with the gear in the housing.
Starting Position
The piston is completely bottomed out. Bars indicate
starting positions of piston and shaft. The housing with
integral gear remains stationary.
Ending Position
When hydraulic pressure is applied to the piston, it moves
axially; while the helical gearing causes the piston and
shaft to rotate simultaneously. Applying pressure to the
opposite port will return the piston and shaft to their
original starting positions.

For over 45 years, HBOETH has lead the way in actuator technology and innovation. Our extensive line of
compact and powerful rotary actuators offer simple and
cost-effective solutions to move, support and position
rotating loads in countless applications.
HBOETH actuators are designed to replace multiple components and function as a rotating device, mounting
bracket and bearing, all-in-one. They feature tremendous
torque output and exceptional load bearing capability in
compact dimensions.
• Powerful: High torque, high bearing capacity
• Durable: Moving parts enclosed, suitable for harsh 
environments
• Compact: High power density, fits in tight spaces
• Hold Position: Zero internal leakages, smooth operation, 
no external brake required
L10, L20 and T20 Series
Manufactured from aluminum, the valve blocks are bolted to a flat 
mounting pad on the actuator housing. Three bolts secure the valve 
block to the actuator. See specification pages for valve location.
The pilot ratio is 3:1. The valves are set to relieve at 3300 psi ±300 psi 
(228 bar ±21 bar). 
L30 Series 
Standard Valve for L30-17 and L30-25 180 Degree Models
Manufactured from aluminum, the valve blocks are bolted to a flat 
mounting pad on the actuator housing. Three bolts secure the valve 
block to the actuator. See specification pages for valve location.
The pilot ratio is 3:1. The valves are set to relieve at 3300 psi ±300 psi 
(228 bar ±21 bar).