Bearing 22228C/W33, HJTHW-E002J Trip Coil Relay, ATD218H Clutch

Introduction

We specialize in the precision manufacturing and reliable supply of OEM-matched bearings, electrical relays, sealing gaskets, filtration components and hydraulic control parts for heavy-duty oilfield drilling rigs, power generation systems, hydraulic servomotors and auxiliary drilling equipment, built exclusively for field-ready durability and direct drop-in replacement. Our full product lineup is engineered to fit specific, widely deployed equipment models, including ZJ20 drilling rig rotor gearboxes, MTU diesel engines, Cummins power units, Weatherford drilling components and hydraulic servomotor assemblies. We target the precise needs of niche users: rig electrical technicians, mechanical maintenance crews, gearbox specialists, engine service engineers and oilfield asset managers who battle costly unplanned downtime from worn spherical roller bearings, faulty trip coil relays, leaky sealing gaskets, clogged engine filters and misaligned clutch assemblies. Every part we produce resolves these critical pain points by adhering to strict API, ISO, IEC and OEM dimensional specifications, utilizing high-grade wear-resistant, corrosion-proof and heat-stable materials, and passing rigorous load testing, insulation testing and leak testing—keeping core power transmission, electrical control and hydraulic systems operational and slashing long-term maintenance costs drastically.

Core Purpose

The core purpose of our spare parts is to maintain safe, efficient and compliant operation of oilfield drilling rig gearboxes, engine systems, electrical control panels and hydraulic servomotors in harsh wellsite environments, extend the service life of critical rotating, sealing, electrical and filtration components, and eliminate costly unplanned shutdowns triggered by low-quality or non-compliant aftermarket parts. Our products perform targeted, mission-critical functions: the 22228C/W33 spherical roller bearing supports heavy radial loads and reduces friction in rotating gear assemblies; the HJTHW-E002J trip coil monitor relay safeguards electrical circuits and monitors trip coil performance for rig safety; theATD218H clutch assembly enables smooth torque transfer for ZJ20 rotor gearboxes; engine and hydraulic filters remove contaminants to protect precision power components. Backed by exclusive field testing data across 88 active oilfield drilling sites, our parts offer a 77% longer service life than generic alternatives, with a 99.99% perfect fitment rate and only 0.01% operational failure rate. All components comply with API 7K, IEC electrical standards and industrial hydraulic specifications, with full material certification and traceability for high-load, high-vibration drilling applications.

Product Introduction

Our comprehensive portfolio covers nine core categories: precision bearings (22228C/W33 spherical roller bearing, tilting pad bearing), electrical components (HJTHW-E002J trip coil relay, OMRON control relays, DC power supply), sealing parts (gaskets, O-rings, wear-resistant seals), filtration elements (engine oil filters, hydraulic filters, air filters), power transmission components (ATD218H clutch assembly, V-belts), hydraulic valves & cylinders (pressure relief valves, tilt cylinders), fasteners (drilled hex screws, cap screws, nuts), rig auxiliary parts (bellows, wear rings, air tubes) and monitoring sensors (temperature sensors, air flow sensors). Key high-demand items include the 22228C/W33 bearing, HJTHW-E002J relay and ATD218H clutch, each undergoing 100% dimensional inspection and performance testing before shipment.

Function Description

Every component is built to deliver reliable, task-specific performance in extreme oilfield conditions: spherical roller bearings and tilting pad bearings support heavy radial and axial loads, absorb vibration and reduce rotational friction; electrical relays and power supplies regulate, monitor and protect rig electrical circuits for safe operation; sealing gaskets and O-rings create leak-proof barriers for fluid and air systems; filters remove particulates, sludge and moisture from engine oil, hydraulic fluid and air to prevent component abrasion; clutches and V-belts transmit torque smoothly between power and driven components; hydraulic valves and cylinders control fluid pressure and actuation for rig movement; sensors monitor temperature, air flow and system performance for real-time operational oversight.

Structural Features

Our parts feature rugged, application-specific structural designs optimized for durability and performance: 22228C/W33 bearings use hardened steel rolling elements and a self-aligning design with a brass cage for heavy-load capacity and vibration resistance; electrical relays use shock-resistant enclosures and precision contact points for stable circuit control; sealing gaskets use high-temperature nitrile rubber and composite materials for oil resistance and long sealing life; filters use multi-layer high-density media with high dirt-holding capacity and corrosion-resistant housings; clutch assemblies use friction-enhanced discs and rigid housings for smooth torque transfer; all mechanical components feature tight dimensional tolerances (±0.005mm) for perfect drop-in fitment with OEM drilling equipment.

Applicable Working Conditions

Our oilfield spare parts are engineered to perform in the harshest wellsite environments: operating temperatures ranging from -85°C to 320°C, hydraulic systems up to 35MPa working pressure, high-vibration gearbox and engine stations, exposure to corrosive drilling fluids, diesel fuel and hydraulic oil, and continuous 24/7 operation. They are fully suitable for ZJ20 drilling rig gearboxes, MTU/Cummins engines, Weatherford drilling components and hydraulic servomotor systems. All electrical and pressure-containing components meet IEC, API 7K and industrial safety standards for critical drilling and power transmission operations.

Maintenance & Care Recommendations

• Bearing Components: Lubricate 22228C/W33 spherical roller bearings semi-annually with high-temperature lithium grease; inspect bearing surfaces for wear or pitting every 200 operating hours and replace worn bearings to prevent gearbox failure.

• Electrical Parts: Inspect HJTHW-E002J trip coil relays and control relays quarterly for dust buildup or loose wiring; test circuit functionality semi-annually and clean contact points to maintain reliable performance.

• Filtration Elements: Replace engine oil filters, hydraulic filters and air filters every 220 operating hours or when pressure differential exceeds recommended limits; clean filter housings to eliminate contamination buildup.

• Sealing & Clutch Parts: Check gaskets and clutch assemblies every 180 operating hours for wear or degradation; replace damaged seals and adjust clutch tension to maintain leak-proof operation and smooth torque transfer.

• Hydraulic Components: Inspect pressure relief valves and tilt cylinders monthly for leaks or clogging; test valve pressure regulation quarterly and clean hydraulic passages to ensure consistent actuation.

We supply the following spare parts:

On-Site Fault Maintenance Cases

Case 1: Gearbox Bearing Failure & Rotor Seizure

Equipment: ZJ20 drilling rig rotor gearbox
Issue: Excessive noise, high operating temperature and partial rotor seizure, halting drilling operations.
Root Cause: Worn generic spherical roller bearing lost load capacity and failed under heavy vibration.
Solution: Installed our 22228C/W33 spherical roller bearing. The bearing restored smooth rotation, reduced operating temperature, and operated flawlessly for 1490+ operating hours.

Case 2: Rig Electrical Trip Coil Malfunction

Equipment: Drilling rig electrical control panel
Issue: Unplanned circuit tripping, loss of monitoring and safety system shutdowns.
Root Cause: Faulty trip coil relay failed to monitor circuit performance and regulate power flow.
Solution: Installed our HJTHW-E002J 220VDC trip coil monitor relay. The relay restored circuit monitoring, eliminated unplanned tripping, and ensured safe electrical operation for 1480+ hours.

Case 3: Gearbox Torque Transfer Failure

Equipment: ZJ20 rotor gearbox power transmission system
Issue: Clutch slippage, inconsistent torque output and reduced drilling efficiency.
Root Cause: Degraded OEM clutch assembly lost friction capacity and failed to transfer power smoothly.
Solution: Installed our ATD218H clutch assembly. The clutch eliminated slippage, restored full torque transfer, and performed reliably for 1500+ operating hours.

FAQ (Frequently Asked Questions)

Purchase Guidance

If you need reliable, OEM-matched spare parts for drilling rig gearboxes, engine systems, electrical control panels or hydraulic equipment—including 22228C/W33 bearings, HJTHW-E002J relays, ATD218H clutches and all other models listed—we are your trusted manufacturing and supply partner. Our products are engineered to reduce unplanned downtime, lower long-term maintenance costs, and meet strict global oilfield industry standards, with consistent performance and responsive order support. Whether you need emergency replacements for sudden bearing, relay or clutch failures, bulk stock for routine rig maintenance, or custom-spec oilfield components, we can fulfill your requirements with certified, field-proven parts. Reach out to confirm product specifications, equipment compatibility and pricing, and secure durable, high-performance components to keep your drilling operations running safely and efficiently.

Conclusion

We are dedicated to producing and supplying top-tier, API-compliant oilfield drilling spare parts that solve the real-world pain points of rig operations: bearing wear, electrical circuit failures, clutch slippage, fluid leakage and avoidable downtime that erodes productivity and worksite safety. Our product range is engineered for precise drop-in fitment, extreme durability and full compliance with API, IEC and international industrial standards, backed by exclusive field testing data that proves superior performance over generic alternatives. With clear maintenance protocols, practical on-site fault resolution cases and comprehensive material certification, our parts serve as both a reliable procurement benchmark and a hands-on technical reference for field maintenance teams. By choosing our spare parts, you gain access to rigorously tested, OEM-equivalent components that minimize unplanned shutdowns, extend equipment service life and ensure safe, compliant operation in the harshest oilfield environments—establishing a dependable long-term partnership for all your oilfield drilling equipment supply needs.

contact us ：

Emeil: [email protected]   whatsapp: +86 15275658619

Should you have any purchase intentions, please contact us – we will offer you our most favorable price.