Product Introduction
This curated selection covers all mission-critical wear and functional components for heavy-duty drawworks systems, including disc brake cylinders, brake heads, hydraulic/pneumatic valves, high-pressure hoses, seals, bearings, air clutches, filters, brake discs, jaw set assemblies, and torque monitoring parts. All parts undergo strict hydrostatic and load testing, comply with API 7K:2015, ISO 9001 quality management systems, and feature full material traceability. The assortment includes heat-treated brake components, high-tensile bearings, chemical-resistant seals, and pressure-rated pneumatic/hydraulic parts, fully mapped to OEM part numbers for simplified inventory and emergency rig repairs.
Functional Performance Specifications
These API-compliant drawworks spare parts deliver industry-leading operational performance: brake cylinders and heads maintain consistent clamping force for precise load control, with a braking torque rating matching the 75,000 FT LBS torque meter specification; high-pressure hydraulic hoses (2SN-620, 215bar) withstand repeated pressure cycling with zero leakage; pneumatic valves and clutches provide millisecond-response actuation for smooth drawworks operation; precision bearings (GB/T 283-1994 N244M) support radial loads up to 120 tons with an L10 service life of 15,000 operating hours; and multi-profile seals eliminate fluid/gas leakage, preserving system pressure integrity.
Structural & Material Features
- API-Certified Precision Manufacturing: All load-bearing and safety components are machined to ±0.001 inch tolerance, meeting API 7K dimensional standards for flawless fitment and operational safety
- High-Durability Material Construction: Forged alloy steel for brake components, nitrile rubber (90 durometer) for seals, high-tensile steel for bearings, and oil-resistant synthetic rubber for hydraulic hoses to withstand drilling fluid exposure and extreme loads
- Modular Safety Design: Pre-assembled brake, clutch, and valve modules reduce field repair time by 60%, minimizing non-productive time on drilling locations
- Pressure & Temperature Resistance: Components rated for operating pressures up to 215bar and temperatures ranging from -20°F to 350°F, suitable for harsh drilling environments
- Standardized Interchangeability: All parts conform to global API and SY/T standards, ensuring cross-compatibility with ZJ series drawworks and eliminating fitment errors
Applicable Operating Conditions
These spare parts are built forextreme land drilling environments, optimized for ZJ40CZ, ZJ70D, and ZJ30DBS rig drawworks used in onshore exploration and development drilling. They perform reliably in remote locations with high vibration, dust, and temperature fluctuations, handling continuous heavy lifting cycles, corrosive drilling mud exposure, and both intermittent and 24/7 continuous duty operation. All components meet strict safety standards for hazardous drilling locations.
Maintenance & Service Recommendations
- Inspect brake blocks, discs, and cylinders every 30 operating hours for wear, scoring, or fluid leakage to maintain reliable braking performance
- Replace hydraulic/pneumatic seals, O-rings, and filters every 6 months or 1,000 operating hours to prevent system leaks and contamination
- Lubricate bearings, gear clutches, and transmission chains per OEM and API specifications to reduce friction and premature wear
- Test pneumatic valves, air clutches, and pressure regulators quarterly to ensure proper actuation and pressure control
- Stock critical safety spares (brake components, valves, seals, bearings) at recommended minimum levels to avoid unplanned rig shutdowns
We supply the following spare parts:
| Item no. | Goods and materials title | UOM | Standard |
| 1 | Disc brake working cylinder KG-00 | pcs. | API Spec 7K |
| 2 | Disc brake emergency cylinder BG-00C | pcs. | API Spec 7K |
| 3 | Brake head (working) KQ-21 | pcs. | API Spec 7K |
| 4 | Brake head (emergency) BQ-22 | pcs. | API Spec 7K |
| 5 | Oil pump HJC 02.03.02 | pcs. | API 7K:2015 |
| 6 | Pump gear unit KCB-55 2,2kw 380V 50Hz | pcs. | API Spec 7K |
| 7 | Relief valve QF514D | pcs. | API 7K:2015 |
| 8 | Pneumatic valve 23Q-L15-K (QY23) | pcs. | API 7K:2015 |
| 9 | High pressure hydraulic hose ¼” 2SN-620, head L=16m | set | ISO-4079 DİN EN 854 1TE/SAE 100R6 |
| 10 | High pressure hydraulic hose 5/16″ 215bar L=3000mm | set | ISO-4079 DİN EN 854 1TE/SAE 100R6 |
| 11 | High pressure hydraulic hose 5/16”, 215bar, L=5000mm | set | ISO-4079 DİN EN 854 1TE/SAE 100R6 |
| 12 | Relief valve QKPJ-½” | pcs. | API 7K:2015 |
| 13 | Valve TJQ-L15 | pcs. | API 7K:2015 |
| 14 | Seal GB/T13871,180X210X15 | pcs. | API Spec 7K |
| 15 | Seal JC054.02.61 | pcs. | API Spec 7K |
| 16 | Seal JC 054.02.47 | pcs. | API Spec 7K |
| 17 | Seal JC 054.02.46 | pcs. | API Spec 7K |
| 18 | Seal JC 054.02.22 | pcs. | API Spec 7K |
| 19 | Seal PD250X290X15 | pcs. | API Spec 7K |
| 20 | Spring o-ring 70x95x12 | pcs. | API Spec 7K |
| 21 | Spring o-ring 60x85x10 | pcs. | API Spec 7K |
| 22 | Air collector LT500*250T | pcs. | API 7K:2015 |
| 23 | Oil filter ISV40-160*100M X-160*100 | pcs. | ISO9001:2008 |
| 24 | Oil filter TF-63*100L TFX-63*100 | pcs. | ISO9001:2008 |
| 25 | Bearing GB/T 283-1994 (N244M) | pcs. | GB/T 283-1994 |
| 26 | Relief valve QY43 KPJa-L15 | pcs. | API Spec 7K |
| 27 | Filter for drawworks oil pump JC153.00 CLY | pcs. | API Spec 7K |
| 28 | Clutch LT500/125 | pcs. | SY/T6760-2010 : API7K |
| 29 | Air clutch LT1168/305T | pcs. | SY/T6760-2010 : API7K |
| 30 | Air clutch LT500/250T | pcs. | SY/T6760-2010 : API7K |
| 31 | Air clutch LT700/135T | pcs. | SY/T6760-2010 : API7K |
| 32 | Emergency bolt JC705.02.43 1200428728 | pcs. | API Spec 7K |
| 33 | Torque meter -48 75000 FT LBS p/n:5310074 | pcs. | SY/T5074 API Spec |
| 34 | Wire line stabilizer PSQ308.00 P | set | API Spec 7K |
| 35 | Working brake cylinder KG-80 | pcs. | API Spec 7K |
| 36 | Chain high transmission 160(2″)-3 SY/T5595 | pcs. | SY/T5595-1997 QOST13568-2017 |
| 37 | Gear clutch 1200467823 HJC020.02.18 | pcs. | API Spec 7K |
| 38 | Gear clutch P/N JC153.05.20 JC-70D | set | API Spec 7K |
| 39 | Brake disc W30-07-902 ZJ 40CZ drill rig | pcs. | API Spec 7K |
| 40 | Brake block PS80-025SM PS80-06B | pcs. | API Spec 7K |
| 41 | Pneumatic valve QY23 | pcs. | API Spec 7K |
| 42 | Relay control valve QY11 | pcs. | API Spec 7K |
| 43 | Back pressure regulator S-QY10B | pcs. | API Spec 7K |
| 44 | Quick release valve ZJ70D drill rig spare parts | pcs. | API Spec 7K |
| 45 | Drawworks gas-water transfer valve JC109.02.01.00 | pcs. | API Spec 7K |
| 46 | Friction disc for ZJ-40CZ drill rig | pcs. | API Spec 7K |
| 47 | Air collector for ZJ-40CZ drill rig | pcs. | API Spec 7K |
| 48 | Jaw set assembly 5″ ZQ203-066-1 | set | API Spec 7K-0048 |
| 49 | Jaw set assembly 5½” ZQ203-065-1 | set | API Spec 7K-0048 |
| 50 | Wire line stabilizer HJJ 017.15.01.00 | pcs. | API Spec 7K |
| 51 | Check valve M-SR20KE05-L1X (ZJ) | set | API Spec 7K |
| 52 | Check valve S25A5.0 (ZJ) | set | API Spec 7K |
| 53 | Iron ring ZJ70 p/n:JC054.02.46 | pcs. | API Spec 7K |
| 54 | Air collector P/N W31-20-906 (ATD330H) | pcs. | API Spec 7K |
| 55 | Two-way pneumatic valve QF501B | pcs. | API Spec 7K |
| 56 | Pneumatic valve VL/O-3-1/4 | pcs. | API Spec 7K |
| 57 | Air release valve p/n:B17.63.42 L=1820 | pcs. | API Spec 7K |
| 58 | 3 way valve ZRMR6-L6-F | pcs. | API Spec 7K |
| 59 | Dies SF19.000-12 | pcs. | API Spec 7K-0048 |
| 60 | Dies H15xEn31xL128 for (Torque Master) | pcs. | DİN-ISO 9002(CRN# S89405) |
| 61 | Reversible Multichannel Valve block of ZJ-30DBS Drill rig movable Station (P/N FDRA020252WVR) | pcs. | API Spec-8C-2012 |
Field Failure Repair Case Studies
Case 1: ZJ40CZ Drawworks Brake System Failure
A ZJ40CZ rig experienced reduced braking power due to worn working brake heads (KQ-21) and degraded brake blocks. Replacing the worn brake heads and installing new OEM-spec brake blocks restored full clamping force, met API 7K braking standards, and eliminated safety risks during lifting operations.
Case 2: ZJ70D Drawworks Hydraulic Hose Leakage
A ZJ70D drawworks suffered hydraulic fluid loss from a cracked high-pressure 5/16″ hose, causing unstable brake operation. Swapping the damaged hose with an ISO 4079-certified replacement hose restored hydraulic pressure, fixed brake responsiveness, and resumed drilling operations without delays.
Case 3: Drawworks Air Clutch Malfunction
A drawworks air clutch (LT500/125) failed to engage properly due to a faulty pneumatic valve (QY23). Replacing the defective valve with an API 7K-compliant unit restored clutch actuation, ensured smooth drawworks operation, and prevented costly rig downtime.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible with ZJ40CZ, ZJ70D, and ZJ30DBS drill rigs? | Yes, this spare parts list includes API-certified components specifically designed for these three ZJ series drawworks, with direct OEM fitment for all listed part numbers. |
| Do all drawworks spares meet API 7K safety standards? | Absolutely, every critical component complies with API Spec 7K, API 8C, and relevant SY/T industry standards, ensuring full adherence to global drilling rig safety requirements. |
| Can these parts resolve common drawworks brake, clutch, and hydraulic issues? | Yes, these OEM-matched spares directly fix the most frequent drawworks failures: brake wear, hydraulic/pneumatic leaks, clutch malfunctions, and seal degradation. |
Procurement Guidance
This API 7K drawworks spare parts list serves as both a formal procurement benchmark and a technical troubleshooting reference, designed to minimize costly rig downtime, reduce long-term maintenance expenses, and uphold the safety and operational reliability of your ZJ series drilling equipment. Each part is a verified API-compliant component that eliminates the risks of substandard aftermarket parts, ensures regulatory compliance, and delivers consistent durability in extreme drilling conditions.
