Custom Grooved & Slotted Tungsten Carbide Bearings - Anti-Rotation & Lubrication Grooves for MWD/LWD Mud Motors Heavy-Duty Pumps

Send Inquiry

Request To Call Back

Custom Grooved & Slotted Tungsten Carbide Bearings - Anti-Rotation & Lubrication Grooves for MWD/LWD Mud Motors Heavy-Duty Pumps

Name: Custom Grooved & Slotted Tungsten Carbide Bearings - Anti-Rotation & Lubrication Grooves for MWD/LWD Mud Motors Heavy-Duty Pumps
Brand: Better Carbide Co., Limited
Price: 30.0 USD
Availability: InStock

Price 30.00 USD ($)/ Unit

Get a Price/Quote

MOQ : 10 Units

Custom Grooved & Slotted Tungsten Carbide Bearings - Anti-Rotation & Lubrication Grooves for MWD/LWD Mud Motors Heavy-Duty Pumps Specification

Coating
uncoated

Material
Tungsten Carbide

Features
High abrasion resistance; high impact resistance; superior corrosion resistance; preventing spin-induced equipment damage under extreme torque; preventing dry running and premature failure.

Usage
MWD/LWD Mud Motors, Electric Submersible Pumps, Downhole Drilling Tools, Heavy-Duty Industrial Pumps, Drilling Jars & Rock Crushers

Coating Type
uncoated

Hardness
HRA88-92.5

Size
customizable

Height
10-300 Millimeter (mm)

Product Type
Custom Grooved & Slotted Tungsten Carbide Bearings

Diameter
8-600 Millimeter (mm)

Color
silver

Length
8-600 Millimeter (mm)

Custom Grooved & Slotted Tungsten Carbide Bearings - Anti-Rotation & Lubrication Grooves for MWD/LWD Mud Motors Heavy-Duty Pumps Trade Information

Minimum Order Quantity
10 Units

FOB Port
Shenzhen/Shanghai/Guangzhou

Payment Terms
Cash on Delivery (COD), Cash in Advance (CID)

Supply Ability
200 Units Per Day

Delivery Time
25 Days

Sample Policy
Free samples available with shipping and taxes paid by the buyer

Packaging Details
Standard export carton / wooden case (customized packaging available upon request)

Main Export Market(s)
North America, South America, Western Europe

Certifications
ISO 9001:2015

Custom Grooved & Slotted Tungsten Carbide Bearings - Anti-Rotation & Lubrication Grooves for MWD/LWD Mud Motors Heavy-Duty Pumps About

Product Overview

Our Custom Grooved & Slotted Tungsten Carbide Bearings are highly engineered components designed to solve complex mechanical challenges in advanced fluid handling systems. Featuring precise anti-rotation pin holes, milled flats, and lubrication grooves, these bearings ensure absolute stability and optimal fluid dynamics in high-torque, high-pressure environments like MWD/LWD mud motors, heavy-duty industrial pumps, and downhole drilling tools.

Manufactured from premium tungsten carbide (cemented carbide) , these bearings offer exceptional resistance to abrasion, erosion, corrosion, and mechanical failure significantly outlasting conventional steel bearings in the most demanding oilfield applications.

Fully customizable to your specific drawings and requirements including cross-holes, milled flats, keyways, O-ring grooves, and custom lubrication channels our bearings ensure exact OEM fit and consistent performance in severe service conditions.

Key Features

1) Anti-rotation cross-holes & slots - Accommodates locking pins to permanently secure bearing to housing; prevents spin-induced equipment damage under extreme torque

2) Milled flats & custom oil grooves - Creates fluid reservoirs that channel drilling mud or lubricating oil directly to the friction zone; prevents dry running and premature failure

3) Wire EDM & Sinker EDM machining - Cleanly cuts precise side holes, keyways, and complex slots without inducing micro-cracks in the brittle carbide matrix

4) Diamond milling & grinding - Achieves perfectly flat milled recesses and ultra-smooth groove profiles for seamless integration with O-rings and retaining pins

5) Premium tungsten carbide (cemented carbide) construction - Ultra-high hardness (HRA 8892.5) for exceptional wear and abrasion resistance

6) Superior corrosion resistance - Nickel-bonded grades withstand HS (sour gas) corrosion and chemical washouts

7) High-impact resistance - Coarse-grain cobalt-bonded grades absorb heavy impacts without fracturing

8) Precision dimensional symmetry - Cross-holes and opposing flats perfectly aligned to true center for balanced load distribution during high-speed rotation

Technical Specifications

Parameter	Specification
Product Type	Custom Grooved & Slotted Tungsten Carbide Bearing
Material	Tungsten Carbide (Cemented Carbide) WC-Ni / WC-Co
Hardness (HRA)	88 92.5 (grade dependent)
Custom Features	Cross-holes, Milled Flats, Keyways, O-Ring Grooves, Lubrication Channels
Hole / Slot Tolerance	Precision EDM machined to 0.01 mm
Concentricity	0.005 mm (ensures perfect shaft alignment)
Surface Finish	Ra 0.2 Ra 0.4 on internal dynamic surfaces
Max Operating Temperature	Up to 500C
HS Code	84829900

Tungsten Carbide (Cemented Carbide) Grade Options

We offer our Custom Grooved & Slotted Tungsten Carbide Bearings in a range of premium grades to suit specific service conditions:

Grade	Binder Type	Key Properties
WC-Ni (Nickel-bonded)	Nickel	Superior corrosion resistance against HS (sour gas) and chemical washouts
WC-Co (Cobalt-bonded)	Cobalt	High wear resistance and toughness
Coarse-grain WC-Co	Cobalt (coarse grain)	High impact resistance; absorbs heavy shocks without fracturing

Recommendation: WC-Ni for sour service and corrosive environments; WC-Co for general oilfield applications; coarse-grain WC-Co for extreme impact and shock-loading conditions.

Solving Critical Mechanical Challenges

Anti-Rotation Design Defeating Bearing Spin

Under extreme torque, standard press-fit bearings can spin inside the metal housing, destroying the equipment. We machine highly precise radial holes (cross-holes) and slots to accommodate locking pins, permanently securing the carbide bearing to the housing and eliminating this common field failure.

Optimized Fluid Lubrication Preventing Dry Running

Starved lubrication causes premature bearing failure. We engineer custom milled flats (recesses) and internal/external oil grooves that act as fluid reservoirs. This design channels drilling mud or lubricating oil directly to the friction zone, cooling the shaft and eliminating dry running.

Advanced Machining Capabilities

Machining complex geometries into fully sintered tungsten carbide (HRA 88-92.5) is an extreme engineering challenge. Our facility is equipped to handle the toughest specifications:

Wire EDM & Sinker EDM: Utilizing advanced Electrical Discharge Machining to cleanly cut precise side holes, keyways, and complex slots without inducing micro-cracks in the brittle carbide matrix.

Diamond Milling & Grinding: Achieving perfectly flat milled recesses and ultra-smooth groove profiles to ensure seamless integration with sealing O-rings and retaining pins.

Perfect Dimensional Symmetry: Ensuring cross-holes and opposing flats are perfectly aligned to the true center of the bearing, guaranteeing balanced load distribution during high-speed rotation.

Applications

Our tungsten carbide (cemented carbide) grooved and slotted bearings are designed for use in the following oil and gas applications:

MWD/LWD Mud Motors Radial bearings for high-torque, high-pressure downhole drilling assemblies
Electric Submersible Pumps (ESP) Radial and thrust bearing support for motor shafts, protectors, and separators
Heavy-Duty Industrial Pumps Shaft support and sealing in high-pressure, abrasive environments
Downhole Drilling Tools Protective bearing components for measurement-while-drilling tools
Drilling Jars & Rock Crushers High-impact bearings for extreme mechanical shock environments
Turbines & Compressors Bearing support for high-speed rotating components
Wellhead Assemblies Wear-resistant components for surface production equipment

Why Choose Our Custom Grooved & Slotted Tungsten Carbide Bearings?

Anti-Rotation Design Prevents Field Failures

Cross-holes and slots accommodate locking pins to permanently secure the bearing to the housing eliminating bearing spin failures common in standard press-fit designs under extreme torque.

Optimized Lubrication Extends Service Life

Custom milled flats and oil grooves create fluid reservoirs that channel lubricant directly to the friction zone, preventing dry running and significantly extending bearing life.

Advanced EDM & Diamond Machining Capabilities

Wire EDM, Sinker EDM, and diamond milling enable complex geometries cross-holes, keyways, flats, and O-ring grooves without inducing micro-cracks in the carbide.

Superior Materials for Extreme Conditions

Manufactured from premium tungsten carbide (cemented carbide) with hardness up to HRA92.5, our bearings deliver exceptional resistance to abrasion, erosion, corrosion, and mechanical failure significantly outlasting conventional steel bearings in abrasive downhole environments.

Precision Engineering for OEM Fit

Each bearing is precision-machined to tight tolerances (0.01 mm for holes/slots, 0.005 mm concentricity) with lapped or ground surfaces, ensuring exact interchangeability and consistent performance.

Full Customization Available

We supply custom bearings tailored to your specific drawings, samples, and functional requirements including cross-holes, milled flats, keyways, O-ring grooves, and custom lubrication channels.

ISO 9001:2015 Certified

Our factory operates under a certified quality management system. Full material traceability available upon request.

Quality Assurance

1) ISO 9001:2015 Certified - Certified quality management system

2) Material Certificate - 3.1/3.2 certificates, full traceability

3) Dimensional Inspection - Precision measurement of OD, ID, cross-holes, slots, flats, and keyways

4) Hardness Testing - Verification per grade specification (HRA 8893)

5) Surface Finish Inspection - Quality control of polished/ground surfaces and groove geometry

6) Concentricity & Symmetry Verification - Ensures cross-holes and opposing flats are perfectly aligned to true center (0.005 mm)

Engineering Collaboration & Ordering Guidelines

Because these components are highly specialized, precision is everything. We manufacture entirely to your custom blueprints.

To receive a comprehensive manufacturing quotation, please provide:

CAD Drawings (2D/3D): Detailing critical dimensions, tolerances (especially for pin holes and keyway widths), and groove specifications
Operating Environment: Fluid type, HS presence, operating temperature, and pressure conditions
Mating Components: Clearance requirements for pins, O-rings, or retaining elements

Our engineering team will review your designs for manufacturability and recommend the optimal carbide grade for your specific field application.

Ordering Information

Please specify the following for an accurate quotation:

Bearing Type: Radial / Thrust / Combination
Material Grade: WC-Ni (Standard Sour Service) / WC-Co (Standard) / Coarse-grain WC-Co (High Impact)
Custom Features: Cross-holes / Milled Flats / Keyways / O-Ring Grooves / Lubrication Channels (specify)
Outer Diameter (OD): Specify (provide drawings or specifications)
Inner Diameter (ID): Specify (provide drawings or specifications)
Overall Length: Specify (provide drawings or specifications)
Tolerances: Specify (standard: 0.01 mm for holes/slots, 0.005 mm concentricity)
Quantity & Destination Port

Need help with your design? Our engineering team can review your CAD drawings and recommend the optimal carbide grade for your specific operating conditions.

Packaging & Shipping

Packaging: Standard export carton / wooden case (customized packaging available upon request)
Shipping: Worldwide delivery by express courier (DHL/FedEx/UPS), by air or by sea.
Incoterms: EXW, FOB, CIF flexible terms available

Tell us about your requirement