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BQSR Series Spring Return Electric Actuator - Reliable China Suppliers and Factory for Efficient Control Solutions
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BQSR Series Spring Return Electric Actuator - Reliable China Suppliers and Factory for Efficient Control Solutions

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This advanced actuator system offers precise motor control, making it ideal for various applications. By connecting power to terminals 2 and 4, the motor rotates counterclockwise (CCW), with the brake engaging through the normally open contact of the OLS to maintain the actuator's CCW position. For clockwise (CW) operation, simply connect power to terminals 2 and 6, activating the brake via the CLS contact for secure positioning. Additionally, connecting power to terminals 2 and 5 engages the brake, allowing the actuator to hold its position during intermediate stops. In the event of power loss, the brake automatically releases, enabling the actuator to move to a fail-safe position, which is adjustable via the limit switch. As a leading manufacturer in China, we pride ourselves on being a trusted supplier, offering high-quality actuator solutions designed for durability and reliability.

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    Product Detail

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    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)
    11OVAC 11A 1/3HP @125/250/277VAC
    1/2A 125VAC, 1 1/4A 250VAC
    220VAC 11A 1/3HP @125/250/277VAC
    1/2A 125VAC, 11/4A 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
    2
    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
    3
    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
    4
    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 INDIVIDAL SWITCH OR RELAY CONTACTS TO PREVENT CROS SFEED 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).
    5
    BE01668
    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 INDIVIDAL SWITCH OR RELAY CONTACTS TO PREVENT CROS SFEED 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 odjustable stop).
    6
    Frequently Asked Questions
    Q1: What power supply options are available for the BQSR series actuators?
    The BQSR-068 model supports 24 VDC, while other models in the series operate on 120/220VAC 1PH, 50/60 Hz.
    Q2: What is the operating temperature range for these spring return actuators?
    The BQSR series is designed to operate in ambient temperatures ranging from -40°F to 140°F (-40°C to 60°C).
    Q3: How does the stall protection system safeguard the motor?
    The actuators feature built-in thermal protection. The circuit opens at 130±5°C to prevent overheating and automatically closes once it cools down to 85±15°C.
    Q4: What materials are used in the construction of the BQSR actuators?
    The construction utilizes high-quality materials including Carbon Steel, Alloy Steel, Spring Steel, Stainless Steel, Aluminum Alloy, NBR, ABS, and Polycarbonate Plastic, finished with a protective Powder Coating.
    Q5: Why is it recommended to power each actuator through its own individual switch or relay?
    Each actuator must be powered through its own individual switch or relay contacts to prevent cross-feed electrical interference between two or more actuators.
    Q6: What is the travel angle and duty cycle of the BQSR series?
    The travel angle is 0 to 90° ± 10°, and the series maintains a standard duty cycle of 50%.