Product Introduction
This curated assortment covers all mission-critical wear components, mechanical assemblies, hydraulic/pneumatic parts and electrical components for the HH JC50DB drawworks, including adjusting shims, oil filter elements, rope kickback devices, rope clamp seats, high-tensile fasteners, PS80 hydraulic disc brake systems, lubrication systems, crowned teeth couplings, pneumatic pipelines, flexible hoses, pressure gauges, explosion-proof hydraulic pumps, control valves, electrical relays, sensors and circuit protection components. All parts comply with API 4F drilling equipment standards, ISO 9001 quality benchmarks and HH OEM performance requirements, with full material traceability and factory hydrostatic testing up to 25MPa.
Functional Performance Specifications
These HH JC50DB drawworks spare parts deliver industry-leading reliability and operational stability: PS80 hydraulic disc brake systems provide consistent braking torque for 50-ton hoisting loads, with zero brake slippage at maximum capacity; CLYX oil filter elements capture contaminants down to 10 microns, extending hydraulic component life by 42% and preventing system contamination; crowned teeth couplings absorb torsional vibration and ensure smooth power transmission with 99.5% power transfer efficiency; explosion-proof hydraulic pumps (KCB83.8) maintain stable 16MPa hydraulic pressure in hazardous oilfield areas; high-pressure flexible hoses withstand continuous 25MPa pressure with zero burst risk; and explosion-proof electrical components meet Ex safety standards for reliable control in flammable drilling environments.
Structural & Material Features
- OEM Precision Machining: All metal components are machined to tight tolerances (±0.0005 inch), ensuring perfect fitment with JC50DB drawworks modules and eliminating premature wear from misalignment
- High-Strength Material Selection: Heat-treated alloy steel for couplings, shims and fasteners; wear-resistant nitrile rubber for hoses and gaskets; corrosion-resistant 316 stainless steel for valves and fittings; and explosion-proof rated materials for electrical components to withstand harsh rig conditions
- Modular Repair Design: Pre-assembled brake kits, filter sets and coupling assemblies reduce field overhaul time by 65%, minimizing non-productive time on the rig floor
- Leak-Proof Hydraulic/Pneumatic System: Multi-layer sealing gaskets and precision connectors form a tight barrier against fluid leakage, maintaining consistent system pressure
- Explosion-Proof Compliance: All electrical and hydraulic control components meet Ex hazardous area standards, ensuring safe operation in flammable oilfield atmospheres
Applicable Operating Conditions
These spare parts are built for harsh onshore and offshore drilling environments, optimized for HH JC50DB 50-ton drawworks used in drill string hoisting, casing running and rig floor lifting operations. They perform reliably in ambient temperatures ranging from -25°F to 375°F, resist exposure to drilling mud, corrosive brine and hydraulic oil, and endure continuous high-cycle hoisting loads. Components are suitable for land rigs, offshore platforms and mobile drilling units, complying with API 4F and Ex hazardous area safety standards.
Maintenance & Service Recommendations
- Replace primary and precise oil filter elements every 1,000 operating hours to prevent hydraulic system contamination and component damage
- Inspect hydraulic hoses, gaskets and connectors every 200 operating hours for cracks, wear or leakage; replace full hose assemblies during scheduled overhauls (every 12 months or 3,500 operating hours)
- Lubricate crowned teeth couplings and rope kickback devices with high-temperature grease every 500 operating hours to reduce friction wear
- Calibrate pressure gauges, pressure switches and transducers every 6 months to ensure accurate system monitoring and control
- Inspect hydraulic disc brake pads and rope clamp seats monthly; replace worn components to maintain safe braking and rope holding capacity
- Test explosion-proof electrical components, relays and sensors quarterly to ensure compliance with Ex safety standards and reliable operation
- Stock critical high-wear parts (filters, hoses, brake components, fasteners, electrical relays) at recommended minimum levels to avoid unplanned downtime during emergency repairs
We supply the following spare parts:
| Item | Description | MFG Part # |
| S/P FOR DRAWWORKS HH, JC50DB | ||
| 1 | ADJUSTING SHIM | JC503.12 |
| 2 | PRECISE OIL FILTER ELEMENT | CLY-160X50 |
| 3 | PRIMARY OIL FILTER ELEMENT | CLY-160X30 |
| 4 | ROPE KICKBACK DEVICE | DSQ-01.00 |
| 5 | 35 ROPE CLAMP SEAT (LEFT) | HHKS04.00 |
| 6 | 35 ROPE CLAMP SEAT (RIGHT) | HHKS03.00 |
| 7 | NUT: M36 | GB/T6170-86 |
| 8 | BOLT: M36X160 | GB/T5782-86 |
| 9 | WASHER: 36 | GB/T93-87 |
| 10 | HYDRAULIC DISC BRAKE SYSTEM (3NO+3NC) | PS80 |
| 11 | LUBRICATION SYSTEM | JC101.06.00 |
| 12 | CROWNED TEETH COUPLING | JC503.16 |
| 13 | RIGHT SHELL OF COUPLING | JC101.08.00 |
| 14 | LEFT SHELL OF COUPLING | JC101.09.00 |
| 15 | AIRE PIPELINE SYSTEM | JC101.10.00 |
| 16 | ADEPTE | 5GJ-R1 1/4″ /M39X2C |
| 17 | BALL SHAPPE RUBBER CONNECTOR: DN80 | KXT-1 |
| 18 | TYPE, PRESSED FLEXIBLE HOSE: 25I-750 | JB1887-77 |
| 19 | ADAPTER | 2GJ-NPT1″/ M39X2C |
| 20 | RUBBER GASKET: DN80PN1.6 | GB9126.1-1988 |
| 21 | REDUCING TEE: NPT 1″ /NPT 1/2″ | GB/T3287-2000 |
| 22 | PRECISE OIL FILTER | CLYX-160×50 |
| 23 | Dual-scale anti-shock pressure gauge . 0-1.6MPa | YN60 |
| 24 | PRIMARY OIL FILTER | CLYX-160 x 30 |
| 25 | Flexible joint U1 : Rc 1″ | GB/T3287-2000 |
| 26 | Reducing interior connector : R 1″ /R 1 1/2″ | GB/T3287-2000 |
| 27 | Stainless steel bail valve : Rc 1 1/2″ | Q11F-16 |
| 28 | Stainless steel bail valve : NPT 1″ | Q11F-16 |
| 29 | Three way connector : NPT 1″ | GB/T3287-2000 |
| 30 | EX electrical oil pump | KCB83.8 |
| 31 | Check valve : NPT 1″ | CIT-08 |
| 32 | Exterior joint : NPT 1″ | GB/T3287-2000 |
| 33 | EX pressure switch : 0.7bar — 10bar | S A 1111E-S5-K2 |
| 34 | NPT exterior thread bulkhead connector | 6NJ-08-10-LN |
| 35 | JIC metric pipe sleeve | NB500-10 |
| 36 | American JIC flared pipe connector nut | NB200-06 |
| 37 | NPT exterior thread bulkhead connector | 6NJ-04-06LN |
| 38 | American JIC 74° exterior taper : 9/16 | 1J-06 |
| 39 | Anti-collision toggie valve : FP-L6 | QY34 |
| 40 | Flexible hose | 26711-06-05 x 1T05 x 700 |
| 41 | American 74° JIC exterior thread bulkhead connector | 6J-06LN |
| 42 | American 74° taper surface flared connector: JIC 9/16 / NPT 1/2 | “UN-06-08 |
| 43 | Insert type oneway valve | YC108-1-B-0-0.34 |
| 44 | OVERFLOW VALVE | DBD510K1X/100 |
| 45 | Pressure test joint | PT-3 |
| 46 | PRESSURE TEST HOSE | HFH2-P1-3-P-2.5 |
| 47 | Pressure guage | YN60-Ill ( 0-161ViPa ) |
| 48 | High pressure oil filter | ZU-H25 x 10BDP |
| 49 | High pressure hydraulic | YJZQ-J10B |
| 50 | Bail valve | NXQ1-F6.3-20-H |
| 51 | EX, proportion amplifier board | E-ME-AC-01F/2 |
| 52 | DC proportion reducing value | RZGA-A-033/80 |
| 53 | Relay valve | LTO9HG1X/125/02M |
| 54 | Electomagnetie reverse valve | DHA-0631/2/24DC |
| 55 | Protection valve | 3WH6A53 |
| 56 | Air control reverse valve | VO/L-3-1/4 |
| 57 | EX. air reverse valve | MFH-3-1/4 |
| 58 | Air control reverse valve | 4WP6D60/N |
| 59 | Hydraulic control reverse valve | 3WH6B53 |
| 60 | Pressure transducer | KYB18G09M1P1C2i |
| 61 | Self seal quick connector | H3-62.63.65.66M |
| 62 | INDICATOR | XB2BVB5LC |
| 63 | INDICATOR | XB2BVB3LC |
| 64 | INDICATOR | XB2BVB4LC |
| 65 | INDICATOR | XB2BVM4LC |
| 66 | TIME DELAY RELAY | REXL2TMBD-RXZE1M2C |
| 67 | GAZ DETECTOR | RK002-12H |
| 68 | POWER | 4NIC-B350 |
| 69 | FUSE | KTK-4+CHM1DI |
| 70 | BREAKER | C65N-C4A/2P |
| 71 | BREAKER | C65N-C6A/2P |
| 72 | BREAKER | C65N-C10A/2P |
| 73 | BREAKER | C65N-C16A/2P |
| 74 | BREAKER | C65N-C25A/2P |
Field Failure Repair Case Studies
Case 1: JC50DB Drawworks Hydraulic Filter Clogging
A drilling rig experienced erratic hydraulic pressure and slow hoisting on the HH JC50DB drawworks, caused by clogged CLYX oil filter elements that restricted fluid flow. Replacing OEM primary and precise filter elements restored stable 16MPa hydraulic pressure, eliminating lag and resuming normal hoisting operations.
Case 2: Hydraulic Disc Brake Slippage
The JC50DB drawworks suffered dangerous brake slippage during heavy hoisting, traced to worn internal components in the PS80 hydraulic disc brake system. Installing OEM brake repair components eliminated slippage, restored full braking torque and ensured safe 50-ton load handling.
Case 3: Explosion-Proof Oil Pump Failure
The drawworks lubrication system malfunctioned due to a faulty KCB83.8 explosion-proof oil pump, leading to insufficient lubrication and component overheating. Swapping in an OEM Ex-rated hydraulic pump restored proper lubrication flow, preventing further wear and downtime.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible with all HH JC50DB drawworks configurations? | Yes, this parts list is designed exclusively for the HH JC50DB 50-ton drawworks, matching OEM part numbers and API 4F specifications for full drop-in fitment across all setups. |
| Do electrical components meet Ex explosion-proof standards? | Absolutely, all pumps, relays, sensors and switches are Ex-rated for hazardous oilfield areas, complying with global safety standards and HH OEM requirements. |
| Can these parts be used for routine maintenance and emergency drawworks repairs? | Yes, these OEM-grade spares work for scheduled preventive maintenance, full drawworks overhauls and emergency field repairs to minimize costly rig downtime. |
Procurement Guidance & Closing Value Statement
This HH JC50DB drawworks spare parts catalog serves as both a formal procurement benchmark and a technical troubleshooting reference, designed to eliminate the risks of substandard aftermarket parts, reduce long-term maintenance expenses and uphold the safety and operational reliability of your drilling hoisting equipment. Every part is a verified OEM-certified component that guarantees perfect fitment, consistent high-load performance and compliance with API 4F and Ex safety standards, making it the definitive resource for maintaining HH JC50DB drawworks.
Whether you need to replace worn filters, faulty brake components, leaking hydraulic hoses, damaged couplings or critical electrical parts to restore your drawworks functionality, or stock critical OEM spares for routine maintenance and unforeseen breakdowns, this catalog provides the exact part numbers, quantities and specifications your operation demands. Secure your supply of authentic HH JC50DB drawworks spare parts today to protect your equipment investment, maintain uninterrupted drilling hoisting operations and keep your rig running safely and efficiently in the field.
