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BQSR Series Spring Return Electric Actuator | China Suppliers & Factory for Reliable Automation Solutions
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BQSR Series Spring Return Electric Actuator | China Suppliers & Factory for Reliable Automation Solutions

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Our high-quality actuator motor is designed for reliable performance, whether rotating counterclockwise (CCW) or clockwise (CW). By connecting power to terminals 2 and 4, the motor will rotate CCW, while the brake engages through the normally open contact of the OLS, ensuring stability in the counterclockwise position. For clockwise rotation, simply connect power to terminals 2 and 6, activating the brake via the CLS to maintain a secure position. Additionally, connecting power to terminals 2 and 5 engages the brake, keeping the actuator in an intermediate stop position. In the event of a power loss, the brake will release automatically, allowing the actuator to return to its fail-safe position, which is adjustable via a limit switch. As one of the leading suppliers and factories in China, we provide top-notch actuators that meet industry standards for performance and reliability.

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    Product Detail

    1-1 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
    Technical and Dimensional Information
    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
    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
    BE01669
    BE01669 Diagram
    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 IT'S OWN INDIVIDUAL SWITCH OR RELAY CONTACTS TO PREVENT CROSS FEED BETWEEN TWO OR MORE ACTUATORS.
    Operation Notes:
    Power to terminal 2 & 4 will drive motor CCW. Brake energizes when NO of OLS closes to hold actuator in CCW position.
    Power to terminal 2 & 6 will drive motor CW. Brake energizes when NO of CLS closes to hold actuator in CW position.
    Power to terminal 2 & 5 will energize brake and hold actuator in intermediate STOP position.
    Loss of power will release spring clutch and return actuator to fail position (limited by adjustable stop).
    BE01669 Wiring Diagram Detail
    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 IT'S OWN INDIVIDUAL SWITCH OR RELAY CONTACTS TO PREVENT CROSS FEED BETWEEN TWO OR MORE ACTUATORS.
    Operation Notes:
    Power to terminal 2 & 4 will drive motor CCW. Brake energizes when NO of OLS closes to hold actuator in CCW position.
    Power to terminal 2 & 6 will drive motor CW. Brake energizes when NO of CLS closes to hold actuator in CW position.
    Power to terminal 2 & 5 will energize brake and hold actuator in intermediate STOP position.
    Loss of supply power will release brake and return actuator to fail position (limited by adjustable stop).
    BE01668 Wiring Diagram Detail
    Frequently Asked Questions (FAQ)
    What are the power supply options for BQSR series electric actuators?
    The standard power supply is 120/220VAC 1PH, 50/60 Hz. The BQSR-068 model also supports a 24 VDC power supply option.
    What materials are used to construct the BQSR series actuators?
    The structural materials include Carbon Steel, Alloy Steel, Spring Steel, Stainless Steel, Aluminum Alloy, NBR, ABS, and Polycarbonate Plastic, all protected by a durable external powder coating.
    What temperature range can the BQSR series actuator withstand?
    The actuator is designed to operate safely within an ambient temperature range of -40°F to 140°F (-40°C to 60°C).
    Does the actuator have built-in motor protection?
    Yes, it features built-in thermal stall protection that opens at 130±5°C and closes at 85±15°C to protect the motor from overheating.
    What happens to the actuator if there is a loss of power?
    Upon loss of supply power, the actuator releases the brake/spring clutch and automatically returns to its fail position, which is restricted by an adjustable stop.
    Can multiple actuators be wired to a single power switch?
    No, to prevent cross-feed issues between two or more units, each actuator must be powered through its own individual switch or relay contacts.