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BQSR Series Spring Return Electric Actuator from China Suppliers - Reliable Factory Solutions for Actuation Needs
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BQSR Series Spring Return Electric Actuator from China Suppliers - Reliable Factory Solutions for Actuation Needs

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Our advanced actuator system is designed for optimal performance and reliability. By connecting power to terminals 2 and 4, the motor will rotate counterclockwise (CCW), with the brake engaged through the normally open contact of the OLS to maintain this position. Conversely, connecting power to terminals 2 and 6 will result in a clockwise (CW) rotation, with the brake activated by the CLS contact to secure the actuator's position. Additionally, connecting power to terminals 2 and 5 activates the brake, ensuring the actuator remains at an intermediate stop. In the event of a power loss, this system is engineered to release the brake, allowing the actuator to safely revert to its fail-safe position, which is adjustable via the limit switch. As a leading China supplier and factory, we prioritize quality and innovation in our actuator solutions to meet your needs.

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    Product Detail

    BQSR Series Spring Return Electric Actuator
    Standard Specifications
    Power Supply: 24 VDC (BQSR-068 only)
    120/220VAC 1PH, 50/60 Hz
    Motor 24VDC 24V 100W 5A (BQSR-068 only)
    110VAC 110V, 50/60Hz, 30W, 0.5A
    220VAC 220V, 50/60Hz, 30W, 0.33A
    Limit Switches 24VDC 15A 1/2HP @125/250VAC (BQSR-068 only)
    110VAC 11A 1/3HP @125/250/277VAC
    1/2A 125VAC, 1 1/4A 250VAC
    220VAC 11A 1/3HP @125/250/277VAC
    1/2A 125VAC, 1 1/4A 250VAC
    Stall Protection: Built in thermal protection, Open at 130±5°C, Close at 85±15°C
    Travel Angle: 0 to 90° ±10°
    Indicator: Continuous position indicator
    Space Heater: 10W 2.5A Anti-Condensation
    Cable Conduit: Two 3/4" NPT (BQSR-034 has One 3/4" NPT)
    Lubrication: Grease Synthetic
    Terminal Block: Spring loaded lever push type
    Materials: Carbon Steel, Alloy Steel, Spring Steel, Stainless Steel, Aluminum Alloy, NBR, ABS and Polycarbonate Plastic
    Ambient Temperature: -40°F to 140°F (-40°C to 60°C)
    External Coating: Powder Coating
    Technical and Dimensional Information
    BQSR Dimensions Graphic
    Dimensions (mm)
    Model ISO5211 A1 A2 B1 B2 C1 C2 D AND F G H I J
    BQSR034 F07 5/16-18 - 12 - 70 - 17 29 96 195 97.5 202.4 105
    BQSR068 F07/F10 5/16-18 3/8-16 15 15 70 102 19 48 - 246 123 245 123
    BQSR136 F07/F10 5/16-18 3/8-16 12 15 70 102 22 31 135.6 286 143 286 143
    BQSR204 F07/F10 5/16-18 3/8-16 12 15 70 102 22 31 135.6 286 143 286 143
    BQSR360 F10/F12 3/8-16 1/2-13 18.8 22.6 102 105 27 43.7 155.7 357 178.6 357 178.6
    Model K L M N THE P Q R S T IN In IN X
    BQSR034 7 195 383 35 85 195 - 148.6 22 - - 34 21 25.4
    BQSR068 5 322 572 105 100 298.5 40 136.4 72 - 70 - 10 50.8
    BQSR136 2 309 559 30 126 309 40 138 72 - - - - 50.8
    BQSR204 2 309 721 30 126 443.5 40 139 72 162 - - - 50.8
    BQSR360 2 466 766 40 160 436 50 180 72 - - - - 50.8
    Bqsr With 2rdgo
    BQSR with 2rdgo Diagram
    Wiring Diagram Reference
    Model Description Drawing
    BQSR034 thru BQSR360 115/220 VAC 1PH, Two Position SE01668
    BQSR068 24 VDC SE01669
    Technical Data
    Actuator Model Spring End Torque (N-m) 90° Cycle Time (seconds) Spring Fail Time (seconds) Motor Size (Watts) Rated Amps Duty Cycle (%) Weight (KGs)
    DC 24V AC 110V AC 220V Standard w/Manual Override
    BQSR034 34 10 4 30 N/A 1 0.5 50 14.4 32.4
    BQSR068 68 30 2 30 2 1 0.5 50 27.9 45.9
    BQSR136 136 30 7 30 N/A 1 0.5 50 36 54
    BQSR204 204 30 7 30 N/A 1 0.5 50 54 72
    BQSR360 360 30 4 80 5 1.4 0.7 50 96.8 126.5
    Technical Data Wiring Schematic
    BE01669
    LIMIT SWITCH OPERATION
    SWITCH CLOSE ← INTERMEDIATE → OPEN
    CLS 1-2   ---- ----
    CLS 1-3 ----    
    OLS 1-2 ---- ---- ----
    OLS 1-3     ----
    ACLS 1-2   ---- ----
    ACLS 1-3 ----    
    AOLS 1-2 ---- ----  
    AOLS 1-3     ----
    SYMBOL DESCRIPTION RATING
    ACLS AUX. CLOSE LIMIT SWITCH (TOP) 250VAC 15A
    CLS CLOSE LIMIT SWITCH 250VAC 15A
    AOLS AUX. OPEN LIMIT SWITCH 250VAC 15A
    OLS OPEN LIMIT SWITCH (BOT) 250VAC 15A
    * EACH ACTUATOR SHOULD BE POWERED THROUGH ITS OWN INDIVIDUAL SWITCH OR RELAY CONTACTS TO PREVENT CROSS FEED BETWEEN TWO OR MORE ACTUATORS.
    Operation Notes:
    1. Power to terminal 2 & 4 will drive motor CCW. Brake energizes when NO of OLS closes to hold actuator in CCW position.
    2. Power to terminal 2 & 6 will drive motor CW. Brake energizes when NO of CLS closes to hold actuator in CW position.
    3. Power to terminal 2 & 5 will energize brake and hold actuator in intermediate STOP position.
    4. Loss of power will release spring clutch and return actuator to fail position (limited by adjustable stop).
    BE01669 Schematic Diagram
    BE01668
    LIMIT SWITCH OPERATION
    SWITCH CLOSE ← INTERMEDIATE → OPEN
    CLS 1-2   ---- ----
    CLS 1-3 ----    
    OLS 1-2 ---- ---- ----
    OLS 1-3     ----
    ACLS 1-2   ---- ----
    ACLS 1-3 ----    
    AOLS 1-2 ---- ----  
    AOLS 1-3     ----
    SYMBOL DESCRIPTION RATING
    ACLS AUX. CLOSE LIMIT SWITCH (TOP) 250VAC 15A
    CLS CLOSE LIMIT SWITCH 250VAC 15A
    AOLS AUX. OPEN LIMIT SWITCH 250VAC 15A
    OLS OPEN LIMIT SWITCH (BOT) 250VAC 15A
    * EACH ACTUATOR SHOULD BE POWERED THROUGH ITS OWN INDIVIDUAL SWITCH OR RELAY CONTACTS TO PREVENT CROSS FEED BETWEEN TWO OR MORE ACTUATORS.
    Operation Notes:
    1. Power to terminal 2 & 4 will drive motor CCW. Brake energizes when NO of OLS closes to hold actuator in CCW position.
    2. Power to terminal 2 & 6 will drive motor CW. Brake energizes when NO of CLS closes to hold actuator in CW position.
    3. Power to terminal 2 & 5 will energize brake and hold actuator in intermediate STOP position.
    4. Loss of supply power will release brake and return actuator to fail position (limited by adjustable stop).
    BE01668 Schematic Diagram
    Frequently Asked Questions (FAQ)
    What power supply options does the BQSR series electric actuator support?
    The standard power supply options are 120/220VAC 1-phase (50/60 Hz). A 24 VDC option is also available specifically for the BQSR-068 model.
    What materials are used to construct the BQSR actuator?
    The actuator is manufactured using highly durable materials, including Carbon Steel, Alloy Steel, Spring Steel, Stainless Steel, Aluminum Alloy, NBR, ABS, and Polycarbonate Plastic.
    Does the BQSR actuator have built-in motor protection?
    Yes, it features integrated thermal stall protection that opens at 130±5°C and closes at 85±15°C to protect the motor from overheating.
    What is the ambient temperature operating range?
    The BQSR series is designed to operate reliably in ambient temperatures ranging from -40°F to 140°F (-40°C to 60°C).
    How does the actuator behave during a supply power loss?
    Depending on the specific wiring configuration (e.g., BE01668 or BE01669), a loss of power will release either the spring clutch or the brake, automatically returning the actuator to its fail position as limited by the adjustable stop.
    What is the duty cycle rating for the BQSR series electric actuators?
    All standard models within the BQSR series (from BQSR034 to BQSR360) have a duty cycle rating of 50%.