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Precision Tungsten Carbide Bearings for Demanding Drilling Environments

Engineered for reliability and performance, TC Bearings delivers high-quality downhole motor components trusted by oil & gas operators worldwide.

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About ROTATE DRILLING MOTOR CO., LTD

Founded in 2014, ROTATE DRILLING MOTOR CO., LTD specializes in the design and manufacturing of high-performance Tungsten Carbide Radial Bearings, Thrust Stacks, Power Sections, Stabilizers, Centralizers, Rotary Subs, and other critical downhole motor spare parts.

Located in Tianjin — one of China's largest international port cities — our strategic position enables efficient global logistics and rapid delivery to clients across the oil and gas industry.

2014
Founded
10+
Countries Served
98%
Client Retention
Manufacturing Facility

Our Product Range

High-quality downhole components engineered for durability, precision, and optimal performance in extreme drilling conditions.

Tungsten Carbide Radial Bearing

Tungsten Carbide Radial Bearing

High wear resistance, ideal for high-load radial applications in downhole motors.

  • • Material: Tungsten Carbide
  • • Hardness: HRA ≥ 88
  • • Max Temp: 150°C
Rotor

Rotor

Precision-machined rotors for Moineau-type mud motors with tight tolerance control.

  • • Chrome-plated steel
  • • 4–12 lobes available
  • • Custom lengths
Stator

Stator

High-elasticity rubber-lined stators for smooth torque transmission and vibration reduction.

  • • Nitrile / HNBR options
  • • Heat & abrasion resistant
  • • Custom profiles
Thrust Bearing

Thrust Bearing

Multi-stage thrust stacks designed to handle axial loads in high-power motors.

  • • Steel/Carbide discs
  • • Load capacity: 10–50 tons
  • • Sealed design
Stabilizer

Stabilizer

Ensures borehole stability and directional control during drilling operations.

  • • Integral or replaceable blades
  • • Hardfacing protection
  • • Full gauge or under gauge
Bent Housing

Bent Housing

Available in fixed and adjustable configurations for directional drilling.

  • • Bend angles: 0.5°–3.0°
  • • Oriented or non-oriented
  • • Premium steel alloy
Float Shoe & Float Collar

Float Shoe & Float Collar

Critical components for cementing operations, preventing backflow.

  • • API 7-1 compliant
  • • Check valve integrated
  • • High-pressure rating
Centralizer

Centralizer & Stop Collar

Maintains casing centralization and controls placement during cementing.

  • • Bow spring or rigid type
  • • Galvanized or coated
  • • Custom OD/ID
Gauge

Gauge

Ensures consistent borehole diameter and prevents deviation.

  • • Replaceable wear pads
  • • Tungsten carbide inserts
  • • Full or partial gauge
Breakout Unit

Breakout Unit

Facilitates safe and efficient disconnection of downhole tools.

  • • High-torque capability
  • • Corrosion-resistant
  • • Modular design
Rotary Subs

Rotary Subs

Connects various components in the BHA with high torsional strength.

  • • API thread types
  • • Premium connections
  • • Heat-treated alloy steel
Float Valve

Float Valve

Prevents reverse flow during cementing and running casing.

  • • Spring-loaded design
  • • High reliability
  • • Easy maintenance

Why Choose Us?

We combine engineering excellence with rigorous quality control to deliver reliable downhole solutions.

Quality Safety

Our professional quality management team ensures every component meets strict international standards and performs reliably in the field.

Expert Team

We have a dedicated customer service and engineering team ready to support your technical and logistical needs with prompt, professional service.

Supply Support

We guarantee product availability with sufficient inventory and efficient logistics to ensure on-time delivery, every time.

500+
Products Delivered
10+
Global Markets
98%
On-Time Delivery
8+
Years Experience

Frequently Asked Questions

What materials are used in your tungsten carbide bearings?

Our radial bearings are manufactured using high-grade tungsten carbide with cobalt binder, providing excellent wear resistance and hardness (HRA ≥ 88).

Can you customize rotor and stator configurations?

Yes, we offer custom lobe configurations (4–12 lobes), lengths, and materials (including HNBR for high-temperature applications).

What certifications do you hold?

We comply with API 7-1 standards for drill stem components and maintain internal quality control systems aligned with ISO practices.

What is your typical lead time?

Standard products ship within 7–15 days. Custom orders typically take 20–30 days depending on complexity.

Do you offer technical support?

Yes, our engineering team provides full technical support, including BHA design recommendations and failure analysis.

Get in Touch

Reach out to our team for product inquiries, technical support, or custom solutions.

Phone
+86 136 5615 1221
Email
director@tcbearings.com
Location
Tianjin, China
Visit Official Website
China Quality Suppliers fobcompany.info

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