The CB Type Pneumatic Clutch is designed to deliver stable engagement, disengagement, and braking performance in industrial power transmission systems. It is widely used in high-speed cyclic operations, as well as coupling and general drive applications.

The clutch features a simple and robust construction. A steel rim is vulcanized with a pneumatic rubber air tube, and friction shoes are mounted on the air tube using pins. When compressed air is applied, the air tube expands, causing the friction shoes to tightly grip the cylindrical drum or hub, enabling efficient torque transmission or braking.

The torque capacity depends on the applied air pressure and rotational speed, ensuring flexibility across various operating conditions.

Key Features

Smooth and reliable engagement and disengagement
High torque transmission capability
Simple structure for easy installation and maintenance
Suitable for high-frequency and heavy-duty operations
Long service life with replaceable air tube components
Flexible configuration for different industrial applications

Working Principle

The clutch operates through pneumatic actuation:

Compressed air is introduced into the air tube
The air tube expands outward
Friction shoes press against the drum or hub
Torque is transmitted or braking is achieved

When the air pressure is released, the clutch disengages automatically.

Model Identification

CB clutches are identified by:

Hub diameter (in inches) – contracted inner diameter

Friction lining width (in inches)

Example:

20CB500
→ Designed for a 20-inch diameter hub
→ Friction lining width: 5.00 inches

Structural Types

1. Single Flange Type

Standard configuration with single flange
Compact and widely used in light to medium-duty applications

Structure and Main Technical Parameters of CB Type Pneumatic Tire Clutch (Single Flange)

N0.	Model	Rated speed r/min	Rated torque KN·m	pressure Mpa	Friction wheel diameterΦ₁ ㎜	Friction plate width B ㎜	Connection dimensions ㎜							InletpipethreadM
							Rim diameter Φ₂	Rim width H		Number and diameter of screw holes n-Φ₃		Bolt circle diameter Φ₄
1	3CB150	2000	0.0407	0.6～0.8	74	38	160.0		55		8-Φ6		146	NPT⅛-27
2	4CB200		0.113		99	51	184.1		66		8-Φ6		170
3	5CB200		0.165		124	51	224.0		72		8-Φ8		205
2	6CB200	1800	0.231		150	51	273.1		72.5		8-Φ10		254	NPT⅜-18
3	8CB250		0.485		201	64	327		85		8-Φ10		308
4	10CB300		0.921		254	76	390.5		99		12-Φ10		371.5
5	12CB350 D		1.5		305	89	447.7		112		14-Φ10		429
6	14CB400 D		2.23		353	102	498.5		125.5		16-Φ10		479.4

2. Double Flange Type

Provides higher structural strength and stability
Suitable for heavy-duty operations

Structure and Main Technical Parameters of CB Type Pneumatic Tire Clutch (Double Flange)

N0.	Model	Rated speed r/min	Rated torque KN·m	pressure Mpa	Friction wheel diameterΦ₁ ㎜	Friction plate width B ㎜	Connection dimensions ㎜							Inlet pipe thread M
							Rim diameter Φ₂	Rim width H		Number and diameter of screw holes n-Φ₃		Bolt circle diameter Φ₄
1	12CB350	1800	1.47	0.6～0.8	302	89	447.7		124		14-Φ10		428.6	NPT⅜-18
2	14CB400	1800	2.23		353	102	498.5		137		16-Φ10		479.4
3	16CB500	1550	3.98		403	127	596.9		168		8-Φ13		571.5
4	18CB500	1400	4.97		454	127	647.7		168		12-Φ13		619.1
5	20CB500	1300	6.06		505	127	698.5		168		12-Φ13		669.9
6	22CB500	1250	7.04		555	127	749.3		168		12-Φ13		720.7
7	24CB500	1200	8.48		606	127	800.1		168		16-Φ13		771.5
8	26CB525	1100	10.4		656	133	863.6		176		16-Φ16		831.9	NPT½-14
9	28CB525	1000	12		706	133	914.4		176		16-Φ16		882.7
10	30CB525	950	13.7		757	133	965.2		176		16-Φ16		933.5
11	32CB525	900	15.5		808	133	1016.0		176		18-Φ16		984.3
12	36CB525	800	19.400		910	133	1133.5		176		18-Φ19		1095.4	NPT¾-14
13	40CB525	750	23.8		1011	133	1235.1		176		20-Φ19		1197.0
14	45CB525	670	29.4		1137	133	1362.1		176		24-Φ19		1324.0

3. Double Row Type

Formed by combining two double-flange units
Torque capacity doubled compared to a single unit

Structure and Main Technical Parameters of CB Type Pneumatic Tire Clutch (Double Row)

N0.	Model	Rated speed r/min	Rated torque KN·m	Pressure Mpa	Friction wheel diameterΦ₁ ㎜	Friction plate width B ㎜	Connection dimensions ㎜				Inlet pipe thread M
N0.	Model	Rated speed r/min	Rated torque KN·m	Pressure Mpa	Friction wheel diameterΦ₁ ㎜	Friction plate width B ㎜	Rim diameter Φ₂	Rim width H	Number and diameter of screw holes n-Φ₃	Bolt circle diameter Φ₄	Inlet pipe thread M
1	12CB350	1800	3.01	0.6～0.8	302	222	447.7	257	14-Φ10	428.6	NPT⅜-18
2	14CB400	1800	4.45		353	248	498.5	283	16-Φ10	479.4
3	16CB500	1550	7.96		403	305	596.9	346	8-Φ13	571.5
4	18CB500	1400	9.94		454	305	647.7	346	12-Φ13	619.1
5	20CB500	1300	12.1		505	305	698.5	346	12-Φ13	669.9
6	22CB500	1250	14.1		555	305	749.3	346	12-Φ13	720.7
7	24CB500	1200	17		606	305	800.1	346	16-Φ13	771.5
8	26CB525	1100	20.9		656	319	863.6	362	16-Φ16	831.9	NPT½-14
9	28CB525	1000	24		706	322	914.4	367	16-Φ16	882.7
10	30CB525	950	27.3		757	322	965.2	367	16-Φ16	933.5
11	32CB525	900	31		808	322	1016.0	367	18-Φ16	984.3
12	36CB525	800	38.9		910	322	1133.5	367	18-Φ19	1095.4	NPT¾-14
13	40CB525	750	47.7		1011	322	1235.1	367	20-Φ19	1197.0
14	45CB525	670	58.8		1137	322	1362.1	367	24-Φ19	1324.0

Applications

Ball mills
Grinding mills
Mining equipment
Cement machinery
Marine drive systems
Industrial transmission systems

Optional Components

Replacement Air Tube (standard / ventilated type)
Friction shoes / linings
Flange assemblies
Custom inlet thread configurations

Why Choose Our CB Type Pneumatic Clutch

Stable and proven pneumatic design
Full range of sizes and configurations
Interchangeable with international standards
Reliable performance in harsh environments
OEM & customization support available

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