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China Supplier Factory MTPM 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 Inspection | Bureau Veritas (BV), CCS, ABS, SJS etc. |
Product Features
The ball-cage universal coupling combines advanced design with reliable performance:
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Provides damping and vibration reduction, effectively lowering noise, with an automatic recirculating lubrication system.
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Offers 0.5 to 1 times higher load capacity compared to conventional universal couplings with the same rotation diameter and inclination angle.
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Ensures excellent synchronization between driving and driven shafts, even when using a single ball plunger type structure.
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Allows large axial and radial displacement compensation; axial displacement can be achieved without external spline connections.
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Compact and lightweight structure with high manufacturability, supporting efficient mass production and reduced costs.
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Reliable in operation, easy to assemble and disassemble, convenient to maintain, and delivers long service life.
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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.
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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 Δ (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) uses a ball-and-cage mechanism to transmit torque, which provides superior synchronization and load capacity. Compared to conventional universal couplings with the same rotation diameter and inclination angle, the ball cage coupling offers 0.5 to 1 times higher load capacity and better vibration damping performance.
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 is equivalent to AISI 4140/4340. This material ensures excellent mechanical strength, toughness, and durability under heavy-duty operating conditions.
Q
What is the expected service life of the MTBCC series coupling?
When properly aligned and lubricated, the MTBCC series coupling is expected to operate for over 20,000 hours. In standard drilling applications, this generally corresponds to approximately 3 to 5 years of continuous service life.
Q
What are the typical applications for ball cage couplings?
Ball cage couplings are primarily used as key components in heavy-duty drive systems, including drilling rigs, mud pumps, rotary tables, and other transmission machinery. They are especially effective for applications involving large shaft inclination angles, restricted radial dimensions, or conditions requiring large axial and radial displacement compensation.
Q
What third-party certifications and inspection reports are available for the MTBCC series?
The MTBCC series couplings support third-party witness and inspection reports from internationally recognized bodies including Bureau Veritas (BV), China Classification Society (CCS), American Bureau of Shipping (ABS), and SJS, among others. These certifications ensure compliance with international quality and safety standards.
Q
How do I select the correct MTBCC model for my application?
Model selection should be based on the required nominal torque (Tn), fatigue torque (Tf), maximum angular misalignment, and allowable axial movement of your specific application. For example, if your system requires a nominal torque of approximately 80,000 N·m with up to 10° angular misalignment, the MTBCC315F would be an appropriate choice. Please consult the product parameters table above or contact our technical team for customized recommendations.