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China Suppliers Factory MTPM Spherical Ball-Cage Universal Coupling for Heavy-Duty Petroleum Applications
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 and inspection report available | Bureau Veritas (BV), CCS, ABS, SJS etc. |
Product Features
Provides damping and vibration reduction, effectively lowering noise, with an automatic recirculating lubrication system.
Offers 0.5 to 1 times 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 ∆ |
| 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
Q
What is a ball cage coupling and what are its main applications?
A ball cage coupling (also known as a spherical roller gear coupling or ball cage gear coupling) is a heavy-duty mechanical coupling designed to transmit torque while accommodating angular, axial, and radial misalignment. It is primarily used as a key component in heavy-duty drive systems such as drilling rigs, mud pumps, rotary tables, and other transmission machinery.
Q
What material is used in the MTBCC series ball cage couplings?
The MTBCC series ball cage couplings are mostly manufactured from high-strength alloy steel 42CrMo, which corresponds to AISI 4140/4340 international standards. This material provides excellent toughness, fatigue resistance, and load-bearing capability for demanding industrial environments.
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 installation are key factors in achieving the maximum service life.
Q
How does the ball cage coupling compare to conventional universal couplings in terms of load capacity?
The ball cage universal coupling offers 0.5 to 1 times higher load capacity compared to conventional universal couplings with the same rotation diameter and inclination angle. Its advanced design also ensures excellent synchronization between driving and driven shafts, making it a superior choice for high-torque and high-misalignment applications.
Q
What third-party inspection certifications are available for the MTBCC series?
The MTBCC series ball cage couplings support third-party witness and inspection reports from internationally recognized certification bodies including Bureau Veritas (BV), CCS, ABS, and SJS. These certifications ensure the products meet rigorous quality and safety standards required by global industries.
Q
What is the operating temperature range of the MTBCC ball cage coupling?
The MTBCC series ball cage couplings are rated for operation in temperatures ranging from -40°C to 120°C. This wide temperature range makes them suitable for use in harsh outdoor environments, cold-climate drilling operations, and high-temperature industrial drive systems.