Hot Products
0102030405
China MTPM Spherical Ball-Cage Universal Coupling - Heavy-Duty Petroleum Suppliers & Factory Solutions
Product Specifications
| Product name | Ball cage coupling, spherical roller gear coupling, ball cage gear coupling |
| Chinese Model | MTBCC series |
| Temperature rating | -40°C to 120°C |
| Material | Mostly made of high-strength alloy steel 42CrMo (AISI 4140/4340) |
| Service life | When properly aligned and lubricated, the coupling is expected to operate for over 20,000 hours, which generally corresponds to 3 ~ 5 years of service in standard drilling applications. |
| Application | As a key component in heavy-duty drive systems such as drilling rigs, mud pumps, and rotary table and other transmission machinery. |
| Third party witness & inspection report available |
Bureau Veritas (BV)
CCS
ABS
SJS
|
Product Features
The ball-cage universal coupling combines advanced design with reliable performance across a wide range of industrial applications.
-
Provides damping and vibration reduction, effectively lowering noise, with an automatic recirculating lubrication system.
-
Offers 0.5 to 1× higher load capacity compared to conventional universal couplings with the same rotation diameter and inclination angle.
-
Ensures excellent synchronization between driving and driven shafts, even when using a single ball plunger type structure.
-
Allows large axial and radial displacement compensation; axial displacement can be achieved without external spline connections.
-
Compact and lightweight structure with high manufacturability, supporting efficient mass production and reduced costs.
-
Reliable in operation, easy to assemble and disassemble, convenient to maintain, and delivers long service life.
-
Applicable to a wide range of working conditions, from low speed heavy loads to high speed drives, particularly effective for shafts with large inclination angles or restricted radial dimensions.
-
Allows significant axial and radial displacement with a large angular misalignment capacity, eliminating the need for external spline connections in axial movement.
Product Parameters
| Model |
Nominal Torque Tn (N·m) |
Fatigue Torque Tf (N·m) |
Max. Angular Misalignment A |
Allowable Axial Movement ∆ (mm) |
| MTBCC225F | 24,800 | 9,000 | 12° | ±25 |
| MTBCC250F | 37,500 | 13,700 | 10° | ±30 |
| MTBCC285F | 44,000 | 16,000 | 10° | ±30 |
| MTBCC300F | 58,000 | 21,000 | 10° | ±30 |
| MTBCC315F | 80,000 | 29,000 | 10° | ±35 |
| MTBCC350F | 109,000 | 40,000 | 10° | ±35 |
| MTBCC390F | 150,000 | 66,500 | 10° | ±38 |
| MTBCC440F | 210,000 | 84,000 | 8° | +30 / -50 |
| MTBCC490F | 320,000 | 160,000 | 8° | ±45 |
| MTBCC550F | 390,000 | 195,000 | 8° | +40 / -60 |
Frequently Asked Questions (FAQ)
Q
What is a ball cage coupling and how does it differ from a conventional universal coupling?
A ball cage coupling (also known as a spherical roller gear coupling or ball cage gear coupling) is an advanced mechanical coupling that uses ball elements retained in a cage to transmit torque. Compared to conventional universal couplings, it offers 0.5 to 1× higher load capacity at the same rotation diameter and inclination angle, better synchronization between driving and driven shafts, and allows larger axial and radial displacement without requiring external spline connections.
Q
What materials are used in the MTBCC series ball cage couplings?
The MTBCC series couplings are mostly manufactured from high-strength alloy steel 42CrMo, which corresponds to AISI 4140/4340 in international standards. This material provides excellent toughness, fatigue resistance, and wear resistance — making it ideal for heavy-duty drilling and transmission applications.
Q
What is the expected service life of the MTBCC ball cage coupling?
When properly aligned and lubricated, the MTBCC series coupling is expected to operate for over 20,000 hours, which generally corresponds to 3 to 5 years of service in standard drilling applications. Regular maintenance and correct lubrication are key factors in achieving maximum service life.
Q
In what applications are MTBCC ball cage couplings typically used?
MTBCC ball cage couplings are designed as key components in heavy-duty drive systems, including drilling rigs, mud pumps, rotary tables, and other transmission machinery. They are particularly effective in applications involving large inclination angles, restricted radial dimensions, or conditions ranging from low-speed heavy loads to high-speed drives.
Q
Are third-party inspection reports available for MTBCC couplings?
Yes. Third-party witness and inspection reports are available from internationally recognized certification bodies, including Bureau Veritas (BV), CCS, ABS, and SJS. These certifications ensure the product meets rigorous quality and safety standards required for industrial and offshore applications.
Q
What is the operating temperature range and maximum angular misalignment for MTBCC couplings?
The MTBCC series couplings are rated for operating temperatures from -40°C to 120°C, making them suitable for a wide range of environmental conditions. Depending on the model, the maximum angular misalignment ranges from 8° to 12°, with the smaller models (e.g., MTBCC225F) supporting up to 12° and larger models (e.g., MTBCC440F–MTBCC550F) rated at 8°.