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Current Location: vtovalve >> Products >> Actuators >> Hydraulic Actuators >> BRM Series Helical Hydraulic Actuators

BRM Series Helical Hydraulic Actuators

BRM Series Helical Hydraulic Actuators


1. General

BRM series hydraulic actuator designed by helical swing-cylinder structure. The shaft of the actuator rotating by relative motions of two kinematic pairs. One is inside spiral of housing and outside spiral of piston, another one is inside spline of piston and outside spline of output shaft.

Features:

- Compact design
-  Large output torque
- Accurate swing angle
- Zero leakage
- Smooth action
- Balanced and zero fraction, long life

2. General


Pressure on "A", indicator slot is moving clockwise, Valve closed and indicator slot is parrallel to mounting area.

Pressure on "B", indicator slot is moving counter-clockwise, Valve open and indicator slot is perpendicular to mounting area.

Turning direction in relation to A and B of BRC125, BRC250, BRC500, BRC1000, BRC2000, BRC4000, BRC8000

3. General Characteristics

Installation

arbitrary

Material of Intermediate Flange

C45

Suited Ambient Temperature

-20℃~+80℃

Working Pressure

Max. 13.5MPa

Actuator Type

helical balanced quarter-turn actuator

Burst Pressure

67.5MPa

Material of Housing

GGG40

Rotation

90°±1°

Material of Piston

GGG40

Hydraulic Medium

mineral oil according to DIN51524,
other media on request

Material of Shaft

C45

Contamination Level for Hydraulic Medium

max. class 9 in accordance with NAS1638

Material of Indicator Shaft

stainless steel

Viscosity

15cst~200cst

4. Output Torque and Displacement

Output Torque and Displacement of BRC125, BRC250, BRC500, BRC1000, BRC2000, BRC4000, BRC8000

5. Dimensions and Weights

Dimensions and Weights of BRC125, BRC250, BRC500, BRC1000, BRC2000, BRC4000, BRC8000

6. Flange

Flange of BRC125, BRC250, BRC500, BRC1000, BRC2000, BRC4000, BRC8000