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CQPL-B Series Pneumatic Disc Brake

CQPL-B Series pneumatic disc brake The CQPL-B Series (e.g., CQPL12.7-B) is a Pneumatic Caliper Disc Brake widely used in industrial automation and heavy machinery. It is designed to provide precise tension control or holding torque using compressed air. The model number breakdown is as follows:...

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Description

CQPL-B Series pneumatic disc brake

The CQPL-B Series (e.g., CQPL12.7-B) is a Pneumatic Caliper Disc Brake widely used in industrial automation and heavy machinery. It is designed to provide precise tension control or holding torque using compressed air.

The model number breakdown is as follows:

CQ: Indicates Pneumatic Caliper (Qi Dong Qian Pan).

P: Indicates Disc Brake (Pan Shi).

L: Typically denotes the specific design series (often associated with "Light" or specific linkage geometry).

B: The Variant/Version. This is crucial as it often dictates the specific mounting dimensions, stroke, or actuation logic (e.g., Spring-Set vs. Air-Set) compatible with the "B" style caliper.

Products Description

💡 Key Features & Characteristics

Operation Logic (Spring-Set vs. Air-Set):
The CQPL series is generally available in two modes, but the "CQP" prefix often implies a specific actuation type.

Spring-Set (Fail-Safe): In many configurations, the brake is normally closed (braking) via spring force and requires air pressure to release (open). This acts as a safety brake in case of air supply failure.

Air-Set (Active Braking): Conversely, some models apply the brake when air is supplied.

Note: Always verify the specific datasheet for the "B" variant to confirm if it is "Spring-Apply/Air-Release" or "Air-Apply/Spring-Release".

Compact & Lightweight Design:
The CQPL-B series is engineered to be compact and lightweight, making it suitable for installation in tight spaces on machinery like packaging units and robotic arms.

Precise Tension Control:
By regulating the air pressure (typically 5-7 bar), operators can precisely control the clamping force. This allows the brake to function not just as a stopper, but as a tension controller (e.g., maintaining constant tension in a web of paper or film).

Maintenance-Free Pivots:
The caliper arms typically utilize self-lubricating bearings or bushings at the pivot points. This ensures smooth, consistent movement and eliminates the need for frequent greasing.

Easy Pad Replacement:
The brake pads (friction linings) are usually asbestos-free and mounted using a snap-in or screw-on mechanism that allows for quick replacement without removing the entire brake assembly from the machine.

🏭 Typical Applications

The CQPL-B series is widely used in industries requiring dynamic braking or tensioning:

Paper & Printing: Unwind/rewind stands for tension control of paper rolls.

Packaging Machinery: Vertical form fill seal (VFFS) machines and baggers.

Textile & Wire: Spooling machines, winding equipment, and cable manufacturing.

General Automation: Servo motor holding brakes and robotic axis locking.

📋 General Technical Specifications

表格

Parameter	Description
Type	Pneumatic Caliper Disc Brake
Model Series	CQPL-B Series (e.g., CQPL12.7-B)
Actuation Medium	Compressed Air (Clean, dry air recommended)
Working Pressure	5 ~ 7 bar (0.5 ~ 0.7 MPa)
Brake Disc Thickness	Typically 12.7 mm (for CQPL12.7 models)
Response Time	Fast action (milliseconds), suitable for high-frequency cycling
Ambient Temperature	-5°C to +40°C
Key Feature	Linear torque control, compact caliper design

Note: When replacing a CQPL-B unit, pay close attention to the disc thickness (e.g., 12.7mm) and the mounting footprint. The "B" variant may have different hole spacing compared to "A" or "C" variants. Additionally, ensure your air supply is free of oil and water, as contaminants can damage the pneumatic cylinder seals.

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