QP (CQP) Series Pneumatic Caliper Disc Brakes
QP(CQP) series caliper disc brake
Application:
The QP (CQP) Series Pneumatic Caliper Disc Brakes are primarily designed for braking and decelerating various mechanisms in equipment across the lifting, transportation, metallurgy, mining, port and construction sectors. They also deliver precise tension control for processing lines in the cable, papermaking and steel plate industries
Operating Conditions:
-Ambient Temperature: -5℃ to 40℃ .
-Working Pressure: 5–7 bar (QP series); ≤ 7 bar (CQP series).
-Environmental & Air Supply Specifications:Anti-corrosion models are required for applications exposed to outdoor rain, snow, corrosive gases or media. The air supply must be free from oil, water and other contaminants.
Main features:
-The QP series adopts spring-applied braking and pneumatic release; the CQP series utilizes pneumatic-applied braking and spring release.
-Compact overall structure with small size and light weight.
-Asbestos-free brake pads for eco-friendly performance.
-Brake pads are mounted via a compression spring clamping mechanism, enabling quick and easy replacement.
-Brake pad wear compensation can be adjusted with ease.
-The QP series offers four-level braking torque adjustment compatible with various disc diameters.
-No independent power source is required; the brake can be directly connected to the existing air compression station. A speed control valve is installed in the air supply line to allow stepless adjustment of braking time.
Model Designation Explanation
Note 1.Customized pneumatic caliper disc brakes are available with varied disc thicknesses and mounting dimensions.
2.The specific model and external dimensions of the mechanism are subject to change without prior notice.
External Dimensions of QP12.7 (CQP12.7) Series
Technical Parameters of QP12.7 Series
|
Model |
Rated braking force (N) (Eight springs) |
Effective radius of brake disc (m) |
Braking torque (N.m) |
Working gas capacity (cm³) |
Total gas capacity (cm³) |
Weight (kg) |
|
QP12.7-A |
6400 |
Brake disc radius -0.03 |
Rated braking force × Effective radius |
273 |
553 |
24 |
|
QP12.7-B |
4800 |
140 |
293 |
20 |
Technical Parameters of CQP12.7 Series
|
Model |
Rated braking force (N) (Eight springs) |
Effective radius of brake disc (m) |
Braking torque (N.m) |
Working gas capacity (cm³) |
Total gas capacity (cm³) |
Weight (kg) |
|
CQP12.7-A |
1788 × working pressure |
Brake disc radius -0.03 |
Rated braking force × Effective radius |
273 |
553 |
23 |
|
CQP12.7-B |
1055 × working pressure |
140 |
293 |
19 |
Note: Specific models and structural dimensions are subject to change without prior notice.
External Dimensions of QP12.7-C Model
Technical Parameters of QP12.7-C Model
|
Model |
Rated braking force (N) (Eight springs) |
Effective radius of brake disc (m) |
Braking torque (N.m) |
Working gas capacity (cm³) |
Total gas capacity (cm³) |
Weight (kg) |
|
QP12.7-C |
6400 |
Brake disc radius -0.03 |
Rated braking force × Effective radius |
273 |
553 |
25 |
External Dimensions of QPL (CQPL) 12.7A Model
Technical Parameters of QPL 12.7A Model
|
Model |
Rated braking force (N) (Eight springs) |
Effective radius of brake disc (m) |
Braking torque (N.m) |
Working gas capacity (cm³) |
Total gas capacity (cm³) |
Weight (kg) |
|
QPL12.7A-A |
6400 |
Brake disc radius -0.03 |
Rated braking force × Effective radius |
273 |
553 |
24 |
|
QPL12.7A-B |
4800 |
140 |
293 |
20 |
Technical Parameters of CQPL 12.7A Model
|
Model |
Rated braking force (N) (Eight springs) |
Effective radius of brake disc (m) |
Braking torque (N.m) |
Working gas capacity (cm³) |
Total gas capacity (cm³) |
Weight (kg) |
|
CQPL12.7A-A |
1788 × working pressure |
Brake disc radius -0.03 |
Rated braking force × Effective radius |
273 |
553 |
23 |
|
CQPL12.7A-B |
1055 × working pressure |
140 |
293 |
19 |
Note: Specific models and structural dimensions are subject to change without prior notice.
External Dimensions of QPL (CQPL) 12.7-B Model
Technical Parameters of QPL 12.7-B Model
|
Model |
Rated braking force (N) |
Effective radius of brake disc (m) |
Braking torque (N.m) |
Working gas capacity (cm³) |
Total gas capacity (cm³) |
Weight (kg) |
|
QPL12.7-B |
2100 |
Brake disc radius -0.03 |
Rated braking force × Effective radius |
140 |
293 |
11 |
Technical Parameters of CQPL 12.7-B Model
|
Model |
Rated braking force (N) |
Effective radius of brake disc (m) |
Braking torque (N.m) |
Working gas capacity (cm³) |
Total gas capacity (cm³) |
Weight (kg) |
|
CQPL12.7-B |
416 × working pressure |
Brake disc radius -0.03 |
Rated braking force × Effective radius |
140 |
293 |
10 |
Note: Specific models and structural dimensions are subject to change without prior notice.
External Dimensions of CQP20-D Model
Technical Parameters of CQP20-D Model
|
Model |
Rated braking force (N) |
Effective radius of brake disc (m) |
Braking torque (N.m) |
Working gas capacity (cm³) |
Total gas capacity (cm³) |
Weight (kg) |
|
CQP20-D |
6097 × working pressure |
Brake disc radius -0.065 |
Rated braking force × Effective radius |
1400 |
3000 |
68 |
External Dimensions of CQP [ ] B Model
Technical Parameters of CQP [ ] B Model
|
CQP10B-A |
Rated braking force (N) |
3725 |
5415 |
7150 |
8940 |
10680 |
Effective radius of brake disc (m) |
Rated braking force |
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
|||
|
CQP10B-B |
Rated braking force (N) |
2110 |
3165 |
4220 |
5275 |
6330 |
||
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
|||
|
CQP10B-F |
Rated braking force (N) |
1065 |
1600 |
2133 |
2665 |
3200 |
Brake disc radius -0.03 |
Rated braking force × Effective radius |
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
External Dimensions of CQP [ ] B Model
Unit:mm
|
Size Model |
B |
D |
E |
F |
ΦG |
H |
I |
J |
K |
Φd |
Φd1 |
|
CQP10B-A |
220 |
155 |
10 |
181 |
Φ190 |
310 |
35.5 |
80 |
40 |
Φ14 |
G3/8" |
|
CQP10B-B |
200 |
155 |
10 |
181 |
Φ150 |
290 |
35.5 |
80 |
40 |
Φ14 |
G3/8" |
|
CQP10B-F |
180 |
155 |
10 |
181 |
Φ114 |
280 |
35.5 |
80 |
40 |
Φ14 |
G1/4" |
Note: Specific models and structural dimensions are subject to change.
Technical Parameters of CQP20B Model
|
CQP20B-A |
Rated braking force (N) |
3725 |
5415 |
7150 |
8940 |
10680 |
Effective radius of brake disc (m) |
Rated braking torque N.m |
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
|||
|
CQP20B-B |
Rated braking force (N) |
2110 |
3165 |
4220 |
5275 |
6330 |
||
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
|||
|
CQP20B-F |
Rated braking force (N) |
1065 |
1600 |
2133 |
2665 |
3200 |
Brake disc radius -0.03 |
Rated braking force × Effective radius |
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
External Dimensions of CQP20B Model
|
Size Model |
B |
D |
E |
F |
ΦG |
H |
I |
J |
K |
Φd |
Φd1 |
|
CQP20B-A |
220 |
165 |
20 |
192 |
Φ190 |
310 |
39 |
90 |
40 |
Φ14 |
G3/8" |
|
CQP20B-B |
200 |
165 |
20 |
192 |
Φ150 |
290 |
39 |
90 |
40 |
Φ14 |
G3/8" |
|
CQP20B-F |
180 |
165 |
20 |
192 |
Φ114 |
280 |
39 |
90 |
40 |
Φ14 |
G1/4" |
Technical Parameters of CQP38B Model
|
CQP38B-A |
Rated braking force (N) |
3725 |
5415 |
7150 |
8940 |
10680 |
Effective radius of brake disc (m) |
Rated braking torque N.m |
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
|||
|
CQP38B-B |
Rated braking force (N) |
2110 |
3165 |
4220 |
5275 |
6330 |
||
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
|||
|
CQP38B-F |
Rated braking force (N) |
1065 |
1600 |
2133 |
2665 |
3200 |
Brake disc radius -0.03 |
Rated braking force × Effective radius |
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
External Dimensions of CQP38B Model
|
Size Model |
B |
D |
E |
F |
ΦG |
H |
I |
J |
K |
Φd |
Φd1 |
|
CQP38B-A |
220 |
200 |
38 |
230 |
Φ190 |
310 |
39 |
90 |
40 |
Φ14 |
G3/8" |
|
CQP38B-B |
200 |
200 |
38 |
230 |
Φ150 |
290 |
39 |
90 |
40 |
Φ14 |
G3/8" |
|
CQP38B-F |
180 |
200 |
38 |
230 |
Φ114 |
280 |
39 |
90 |
40 |
Φ14 |
G1/4" |
External Dimensions of QP (CQP) 30 (25.4)-D Model
Technical Parameters of QP 30 (25.4)-D Model
|
Model |
E |
Rated braking force (N) (12 springs) |
Effective radius of brake disc (m) |
Rated braking torque (N.m) |
Working gas capacity (cm³) |
Total gas capacity (cm³) |
Weight (kg) |
|
QP30-D |
30 |
32800 |
Brake disc radius -0.065 |
Customized power x Effective radius of brake disc |
1400 |
3000 |
70 |
|
QP25.4-D |
25.4 |
Technical Parameters of CQP 30 (25.4)-D Model
|
Model |
E |
Rated braking force (N) |
Effective radius of brake disc (m) |
Rated braking torque (N.m) |
Working gas capacity (cm³) |
Total gas capacity (cm³) |
Weight (kg) |
|
QP30-D |
30 |
32800 |
Brake disc radius -0.065 |
Customized power x Effective radius of brake disc |
1400 |
3000 |
70 |
|
QP25.4-D |
25.4 |
Note: Specific models and structural dimensions are subject to change without prior notice.
External Dimensions of CQPL 38B Series Brakes
Technical Parameters of CQPL 38B Series Brakes
Unit:mm
|
CQPL38B-A |
Rated braking force (N) |
3725 |
5415 |
7150 |
8940 |
10680 |
Effective radius of brake disc (m) |
Rated braking torque (N.m) |
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
|||
|
CQPL38B-B |
Rated braking force (N) |
2110 |
3165 |
4220 |
5275 |
6330 |
Brake disc radius -0.03 |
Rated braking torque × Effective radius |
|
Air pressure (bar) |
2 |
3 |
4 |
5 |
6 |
|||
Note: Specific models and structural dimensions are subject to change without prior notice.
Product Overview
The QP series adopts a normally closed design, with braking actuated by spring force and release triggered by compressed air; under standby conditions, spring force clamps the brake pads against the brake disc to achieve reliable braking, and when compressed air is supplied, the air pressure overcomes the spring force to disengage the brake pads and release the brake, while on the contrary, the CQP series features a normally open design relying on air pressure for braking and spring force for release-when compressed air is introduced, the air pressure drives the brake pads to clamp the brake disc and initiate braking, and once the air pressure is relieved, the spring force resets the brake pads to the released position; both series are widely applied in heavy-duty industrial fields including lifting machinery, port equipment, mining machinery and automated production lines, with typical application scenarios covering braking for the traveling and lifting mechanisms of overhead cranes and gantry cranes, windproof and emergency braking of container quay cranes, and safety braking of belt conveyors and other material-handling equipment.
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