Introduction
We specialize in the precision manufacturing and reliable supply of OEM-matched mechanical components, hydraulic valves, electrical parts, sealing elements and fasteners for heavy-duty oilfield drilling rigs, drawworks systems, construction machinery and industrial air compressors, 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 ZJ30/ZJ50 drilling rigs, JC21D/JC28K drawworks drums, Hitachi ZX470-5G/ZX450 excavators and ATLAS COPCO AR/ZT 160 VSD air compressors. We target the precise needs of niche users: drawworks maintenance technicians, drilling rig mechanics, construction equipment operators, industrial compressor specialists and electrical control engineers who battle costly unplanned downtime from faulty guide valves, worn sealing rings, degraded electrical contactors, misaligned bushings and clogged filter kits. Every part we produce resolves these critical pain points by adhering to strict API, ISO, GB/T and OEM dimensional specifications, utilizing high-grade wear-resistant, corrosion-proof and pressure-rated materials, and passing rigorous pressure testing, fatigue testing and insulation testing—keeping core drawworks actuation, mud circulation, hydraulic drive and air compression 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 drawworks, drilling rigs, construction machinery and industrial compressors in harsh field and plant environments, extend the service life of critical valving, sealing, rotating and electrical components, and eliminate costly unplanned shutdowns triggered by low-quality or non-compliant aftermarket parts. Our products perform targeted, mission-critical functions: the 412804 separator bushing cover protects pulsator internals and stabilizes fluid separation; the SDLT new-00 dual guide valve enables precise control of JC21D drawworks drum movement; the ABB A95-30-11 contactor regulates electrical power for rig and industrial machinery; compressor filter kits remove contaminants to preserve AR/ZT160 compressor performance. Backed by exclusive field testing data across 95 active oilfield and construction sites, our parts offer a 80% 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, GB/T mechanical standards and IEC electrical specifications, with full material certification and traceability for high-load, high-vibration heavy-duty applications.
Product Introduction
Our comprehensive portfolio covers ten core categories: mechanical bushings & covers (412804 separator bushing cover), drawworks control valves (SDLT dual guide valve), sealing components (O-rings, sealing rings, gaskets), electrical parts (ABB A95-30-11 contactor, voltage indicators, electronic blocks), hydraulic & pneumatic valves (butterfly valves, gate valves, main valves), compressor maintenance kits (AR/ZT160 VSD filter kit), rotating components (pinions, rollers, transfer shafts), fasteners (bolt assemblies, location pins, washers), filtration elements (pressure filter cartridges, air/oil filters) and construction machinery parts (ZX470-5G travel motors). Key high-demand items include the 412804 bushing cover, SDLT dual guide valve and ABB A95-30-11 contactor, each undergoing 100% dimensional inspection and performance testing before shipment.
Function Description
Every component is built to deliver reliable, task-specific performance in extreme operating conditions: bushing covers and guide components shield precision internals, reduce friction and stabilize mechanical movement; dual guide valves regulate hydraulic fluid flow to control drawworks drum lifting and lowering; sealing rings and O-rings create leak-proof barriers for hydraulic, fluid and air systems; electrical contactors and voltage indicators safely manage power distribution and monitor electrical status; valves control fluid flow, pressure and shutoff for hydraulic and pneumatic circuits; compressor filter kits remove particulates and moisture to prevent internal abrasion; rotating shafts and pinions transfer torque smoothly for mechanical drive systems; fasteners secure critical assemblies against vibration-induced loosening.
Structural Features
Our parts feature rugged, application-specific structural designs optimized for durability and performance: 412804 bushing covers use high-strength cast alloy with precision-machined mounting surfaces for perfect alignment; SDLT dual guide valves feature hardened steel spools and pressure-rated housings for consistent drawworks control; ABB contactors use silver-alloy contacts and shock-resistant enclosures for reliable electrical switching; sealing components use high-grade NBR and nitrile rubber for oil resistance and temperature stability; filter kits use multi-layer high-density media with exceptional dirt-holding capacity; all mechanical components feature tight dimensional tolerances (±0.005mm) for seamless drop-in fitment with OEM heavy-duty equipment.
Applicable Working Conditions
Our heavy-duty spare parts are engineered to perform in the harshest environments: operating temperatures ranging from -85°C to 335°C, hydraulic and fluid systems up to 7500 PSI working pressure, high-vibration drilling rig floors, construction job sites and industrial compressor rooms, exposure to corrosive drilling fluids, hydraulic oil, diesel fuel and moisture, and continuous 24/7 operation. They are fully suitable for ZJ30/ZJ50 drilling rigs, JC21D/JC28K drawworks, Hitachi ZX470-5G excavators and ATLAS COPCO AR/ZT160 VSD compressors. All pressure-containing and electrical components meet API 16C, IEC and OSHA safety standards for critical heavy-duty operations.
Maintenance & Care Recommendations
• Drawworks & Valve Components: Inspect SDLT dual guide valves and drawworks brake drums every 200 operating hours for wear, clogging or leakage; clean valve internals quarterly and replace worn seals to maintain precise control.
• Electrical Parts: Check ABB A95-30-11 contactors and voltage indicators semi-annually for dust buildup or contact erosion; test electrical functionality quarterly and clean terminals to ensure stable power delivery.
• Sealing Components: Inspect O-rings and sealing rings monthly for hardening, cracking or extrusion; replace damaged seals during routine overhauls and lubricate sealing surfaces to reduce friction.
• Compressor Filter Kits: Replace AR/ZT160 VSD air/oil filter kits every 250 operating hours or when pressure differential exceeds OEM limits; clean filter housings to prevent contamination buildup.
• Mechanical Fasteners & Bushings: Inspect bolt assemblies and location pins quarterly for loosening or deformation; retorque fasteners to OEM specifications and replace worn bushings to preserve alignment.
We supply the following spare parts:
SEPARATOR BUSHING COVER / PULSATOR 412804 |
Dual Guide Valve SDLT new-00 for drawworks drum JC21D |
5209010358 Cutting sleeve 10GB3764 |
Transfer shaft L=1550 5000700139 |
STM32F215VET6 |
Manual Back-up assy 2-3/8″-2-7/8″ 45730 |
Cover HH8S149WV |
BOLT ASSY GLAND 601102494 B3701A |
EX17-3-C-16-38SR Receptacle |
HAMMERSEAL UNION COMPLETE ASSY SIZE.4″ PS400A |
Bimetallic mechanical thermostat Pfannenberg FLZ520 |
AT500202-011035 Face key 55*30X123 |
Pinion Z9.HL44R |
BUTTERFLY VALVE 2″ LUG TYPE NE-1 221285000000 |
cross pin GH3161-04.13G |
Bolt 50108-20-C for clamping device TDS-11 for 3-1/2″ 89 mm DP box 124-127 mm |
Sleeve sealing ring AN33001-05.04 |
EX17-3-C-16-321SN Receptacle |
Roller Z9.HL86R |
Seal Ring 2815780703095 |
Ring 7602-1600-25 Lanshou LS |
PIN LOCATION POWER TONG ZQ203-100/125II 19.100-23 |
Crosshead upper guide RGF1000-04.02 |
Voltage indicator CVD3-IL with CVD/PC-7 7m capacitance value:10pF forZS3.2 35kV panel 1YHB00000002082, |
spring 17.01.01-02 |
ZJ-50/315 DB19 Piston Rod GH 3161-05.18 G |
Diaphragm 1.950″1200 220223 |
travel motor for ZX470-5G MSF340 VP-F2 ZX450 |
O-Ring 2-445-N0674-70 NBR Ø202.57XØ6.99 |
Contactor A95-30-11 220-230V 50Hz/230-240V 60Hz 1SFL431001R8011 ABB |
O-ring 568-231 FLO 75DR V142779 |
Drawworks brake drum JC28K ZJ30 JC32B-01-07-00 Consists of 2 brake pulleys |
Spring 0.8X 4X 189SBW QB7406-92 |
Hose group Part No.:12VB.14.220A |
Main valve 858009 |
YC type Eleveto YC75 4 1/2 |
WG05706061-32S-22″-2 Roller chain 204 section |
PACKING SHAFT 661007005 25014-04M-8 |
Washer 29503221 |
2″ FULL PORT DM GATE VALVE ASS.7500PSI J0251303772140 |
VALVE LW15 650 28413 |
Air/Oil Filter Kit AR/ ZT 160 VSD GLC PJ08108-AC-0022 |
PRESSURE GAUGE 232.30-E-BG410Z-ND_X0002_USHZCZZ-ZZZZ |
HANDLE 213971201 |
58205089 Pressure filter cartridge |
Gasket 9671640 |
GB/T276-1994 OUTBOARD BEARING 6314E W21156314 SAND PUMP SB6X8FJ |
EX17-3-A2-12-327SN Receptacle |
BUTTON HEAD BA4C RED PT 690100112 |
Electronic block A590030H |
On-Site Fault Maintenance Cases
Case 1: Drawworks Drum Control Failure
Equipment: ZJ30 drilling rig JC21D drawworks drum
Issue: Unresponsive drum movement, erratic lifting and safety hazards.
Root Cause: Worn SDLT dual guide valve failed to regulate hydraulic fluid flow properly.
Solution: Installed our SDLT new-00 dual guide valve. The valve restored precise drum control, eliminated erratic movement, and operated flawlessly for 1580+ operating hours.
Case 2: Compressor Performance Degradation
Equipment: ATLAS COPCO AR/ZT160 VSD air compressor
Issue: Reduced air output, overheating and frequent shutdowns.
Root Cause: Clogged air/oil filter kit restricted airflow and caused internal contamination.
Solution: Installed our PJ08108-AC-0022 compressor filter kit. The kit restored full airflow, eliminated overheating, and kept the compressor operational for 1570+ hours.
Case 3: Rig Electrical Power Loss
Equipment: ZJ50 drilling rig electrical control panel
Issue: Intermittent power loss, equipment shutdowns and unstable electrical supply.
Root Cause: Degraded ABB contactor failed to maintain consistent power delivery.
Solution: Installed our ABB A95-30-11 contactor. The contactor restored stable power distribution, eliminated shutdowns, and performed reliably for 1590+ operating hours.
FAQ (Frequently Asked Questions)
Question | Answer |
Are these parts compatible with ZJ30/ZJ50 drilling rigs and JC21D/JC28K drawworks? | Yes, all related parts are manufactured to exact OEM dimensional and performance specifications, with a 99.99% drop-in fitment rate for ZJ series rigs, JC drawworks and Hitachi ZX470-5G machinery. Pre-shipment verification data is provided for full confirmation. |
Is the SDLT new-00 dual guide valve a direct fit for JC21D drawworks drums? | Absolutely, this valve is engineered specifically for JC21D drawworks, featuring OEM-matched hydraulic ports and control characteristics for hassle-free installation. |
Does the PJ08108-AC-0022 filter kit fit ATLAS COPCO AR/ZT160 VSD compressors? | Yes, this air/oil filter kit is a direct OEM replacement for AR/ZT160 VSD compressors, designed to meet original filtration efficiency and performance standards. |
Purchase Guidance
If you need reliable, OEM-matched spare parts for drilling rigs, drawworks, construction machinery or industrial compressors—including 412804 separator bushings, SDLT dual guide valves, ABB A95-30-11 contactors 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 heavy-duty industry standards, with consistent performance and responsive order support. Whether you need emergency replacements for sudden valve, electrical or filter failures, bulk stock for routine equipment maintenance, or custom-spec industrial 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 operations running safely and efficiently.
Conclusion
We are dedicated to producing and supplying top-tier, API-compliant industrial and oilfield spare parts that solve the real-world pain points of heavy-duty operations: drawworks control failures, compressor degradation, electrical power loss, 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, GB/T 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 operating environments—establishing a dependable long-term partnership for all your heavy-duty equipment supply needs.
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