Product Introduction
Our Kerui JC750S drawworks parts lineup covers all high-wear, critical components for the drawworks main body, hydraulic brake system, angle gearbox, compound case, pneumatic/hydraulic control circuits, and axle assemblies. Crafted from high-strength alloy steel, heat-treated cast iron, non-asbestos friction materials, oil-resistant elastomer seals, and precision-machined metal parts, each component undergoes dimensional verification, pressure testing, and wear resistance screening to match Kerui OEM performance standards. This comprehensive lineup supports full drawworks maintenance, partial repairs, and major overhauls, ensuring full compatibility with JC750S hoists and paired XJ750/XJ550 drilling rigs.
Functional Capabilities
- Reliable Drawworks Braking: Non-asbestos brake bands, woven friction blocks, and brake drums deliver consistent, high-friction braking for safe hoist load control, meeting API 7K safety standards.
- Power Transmission: Precision-machined sprockets, bevel gears, and input/output shafts transfer torque smoothly between the drawworks and angle gearbox, enabling efficient hoisting/lowering operations.
- Hydraulic & Pneumatic Control: Parker hydraulic pumps, Hawe control valves, Rexroth air valves, and quick release valves regulate fluid/air flow, controlling drawworks speed and brake actuation.
- Load-Bearing Support: High-precision roller bearings (23036C, NU2222E) and tapered bearings support heavy rotating loads, reducing friction and preventing premature component failure.
- Leak-Proof Sealing: GB/T standard O-rings, lip seals, and dust rings block oil, dust, and debris intrusion, protecting gears, bearings, and hydraulic systems from contamination.
- System Protection: Safety valves, check valves, and pressure regulating valves maintain stable system pressure, preventing overpressure damage to hydraulic/pneumatic components.
Structural Design Features
- Exact OEM Fit: Precision-machined dimensions and Kerui OEM part number matching ensure seamless replacement, cutting installation time by up to 50% compared to generic parts.
- Heavy-Duty Durability: Heat-treated alloy components and non-asbestos friction materials resist wear, high temperatures, and oil contamination, even under continuous heavy hoisting loads.
- Standardized Compliance: All bearings, seals, and fasteners meet strict GB/T national standards, ensuring consistent quality and compatibility with Kerui drawworks assemblies.
- Modular Repair Design: Individual seals, bearings, and friction blocks enable targeted repairs, minimizing waste and lowering long-term rig maintenance costs.
- Corrosion Resistance: Coated metal components and oil-resistant seals withstand harsh oilfield conditions, including moisture, dust, and drilling fluid exposure.
Applicable Operating Conditions
These Kerui JC750S drawworks components are engineered to perform reliably in rigorous oilfield drilling scenarios, including:
- Kerui JC750S drawworks for XJ750 and XJ550 land drilling rig hoist systems
- Continuous 24/7 heavy-duty hoisting operations with high vibration and load stress
- Hydraulic system pressure up to 200 PSIG (14 BAR) and pneumatic pilot pressure 40-200 PSIG
- Harsh onshore oilfield environments with dust, drilling mud exposure, and extreme temperature fluctuations
- Routine drawworks maintenance, emergency field repairs, and major overhauls
Maintenance & Service Recommendations
- Inspect brake bands and friction blocks every 300 drilling hours for wear; replace worn friction blocks to maintain consistent braking force and prevent brake slippage.
- Lubricate bearings, sprockets, and gear assemblies with approved heavy-duty grease per GB/T standards every 200 hours to reduce friction and extend service life.
- Check hydraulic/pneumatic hoses, valves, and seals monthly for leaks or damage; replace faulty valves and worn seals immediately to prevent pressure loss.
- Inspect gearbox bevel gears and shafts for wear or pitting during major overhauls, replacing damaged components to preserve smooth torque transmission.
- Calibrate pressure regulating valves and safety valves quarterly to maintain optimal system pressure and prevent overpressure damage.
- Store rubber seals and friction components in a cool, dry, dark environment to prevent premature degradation; avoid exposure to oil, UV light, and extreme temperatures.
- We supply the following spare parts:
| kerui JC750s drawworks spareparts list | part No |
| Drawwork | |
| DRAWWORKS BRAKE BAND | KR106.48.305.00 |
| GEMINI WOVEN BRAKE BLOCK;NON-ASBESTOS; MAKE:SCAN-PAC MANUFACTURING | CPTX-LKR1064830503 |
| Nut & Bolt for above woven brake block ;MAKE:SCAN-PAC;FOR XJ750 KERUI HOIST | KR106.48.305.00 |
| BRAKE DRUM | HY2118001503TTLR(KH15-29) |
| Grease nipple M10x1 | JB/T 7940. 1-1995 |
| O-ring 630×5.3-G-N | GB/T 3452. 1-2005 |
| Bearing 23036C 180x280x74 | GB/T 288-2013 |
| Lip seal ring FB200 x230x15 | GB/T 13871. 1-2007 |
| Bearing UN1034 170x260x42 | GB/ 283-2007 |
| Bearing 23034C 170×260×67 | GB/T 288-2013 |
| Pin 8×30 | GB/T 119.1-2000 |
| Sprocket P=44.45 Z=40 | KR106.48.200.05 |
| Stopping plug | KR106.48.100.10 |
| Sprocket P=44.45 Z=63 | KR106.48.200.15 |
| Friction wheel | KR106.48.200.17 |
| Shear pin | KR106.48.200.19 |
| Quick release valve | 145407DF |
| Rubber washer | 412324-03 |
| Hydromatic brake system | |
| Lip seal ring FB130 x160x12 | GB/T 13871. 1-2007 |
| Quick releave valve | 145407DF |
| Air connection gasket | 000072×0012 |
| Bearing 23024C 120×180×46 | GB/T 288-2013 |
| Sprocket P=44.45 Z=25 | KR106.48.260.08 |
| Angle gear box | |
| O-ring 307×5.3-g-s | GB/T 3452.1-2005 |
| O-ring 95×5.3-g-s | GB/T 3452.1-2005 |
| O-ring 100×5.3-G-S | GB/T 3452.1-2005 |
| Lip seal ring FB120x150x12 | GB/T 13871.1-2007 |
| lip seal ring FB280x320x20 | GB/T 13871.1-2007 |
| Lip seal ring FB 130x160x12 | GB/T 13871.1-2007 |
| Bearing 52220E 100x180x107 | GB/T 299-2008 |
| Bearing NU2222E 110x200x53 | GB/T 283-2007 |
| Bearin 352224E 120x215x132 | GB/T 299-2008 |
| Bearing NU220E 100x180x34 | GB/T 283-2007 |
| Grease Nipple M10X1 | JB/T 7940.1-1995 |
| Input flange | KR110.03.07 |
| Input shaft | KR110.03.08 |
| Sprocket Z=23 P=44.45 | KR110.03.19-2 |
| Spacer L=530 | KR110.03.25 |
| Output shaft | KR110.03.26 |
| Bevel gear Z=36 | KR110.03.30 |
| Bevel gear Z=23 | KR110.03.33 |
| Air filter | C-G3/4 |
| Deadline anchor JZG24A | |
| sensor | szt3 |
| diaphragm | JY248-10 |
| Quick female connector | JY246.4.1 |
| Quick female connector | JY248.6 |
| Self-seaeling connector | JY248.2 |
| Self-seaeling female connector | JY250.2.1 |
| O-ring 12×2.4 | JY248-3 |
| Sealing washer | JY248.2-4 |
| O-ring 4.47×1.78 | 2-008 |
| Long connection hose | JY246. 4A |
| Hand pump | SZT5A |
| Connection hose | JY250.2 |
| Transformer oil | GB 2536-1990 |
| Clamp | JZ400.1-8B |
| Rig carrier | |
| Steering Pump; P/N:V20F-1P13P-038C-8H-22; for KERUI Hoist | V20F-1P13P-038C-8H-22 |
| PNUEMATIC DIRECTIONAL VALVE;P/N:VSP-3301-31; MAKE:VERSA; VALVE PRESSURE :VAC-200 PSIG (VAC-14 BAR);PILOT PRESSURE: 40-200 PSIG (2.8-14 BAR) | VSP-3301-31 |
| HYDRAULIC PUMP (MAIN HOIST); P/N:7049112042; MAKE:PARKER; for XJ750 & XJ550 | 7049112042 |
| HYDRAULIC CONTROL VALVE;P/N:1606530045; PSV 51/160-5; 52H 180/160C80/A; E1 ; MAKE:HAWE HYDRAULIK; FOR WINCH LINE;for XJ750 KERUI Hoist | 1606530045 |
| MAIN DRUM CONTROL VALVE; DRAWING NO – HD-2-X | HD-2-X |
| SHIFT VALVE; DRAWING NO – P-055556-00003 (8P-1S) | P-055556-00003 |
| HYDRAULIC CONTROL VALVE;P/N:R10PH-BF;MAKE:PARKER | R10PH-BF |
| CONTROL AIR VALVE; 2 WAY; P/N – R431002833; MAKE – REXROTH | R431002833 |
| Double lock valve; P/N – PD4-41-0198 | PD4-41-0198 |
| overflow valve; P/N – MQPs-35310 | MQPs-35310 |
| Check valve 1/2; P/N – S10A31 | S10A31 |
| Quick release valve; P/N – RL3516AB | RL3516AB |
| safety valve; P/N – EQ140/NPT3/8 | EQ140/NPT3/8 |
| one-way valve; P/N – QF-28A | QF-28A |
| Pressure regulating valve; P/N – AR2000-08 | AR2000-08 |
| direction control valve; P/N – 21009-0006 | 21009-0006 |
| ABS adjuster; P/N – DCF-Ⅲ | DCF-Ⅲ |
| Suspension system | S2900Ja000D1 |
| overflow valve | MQPs-35310 |
| quick release valve | RL3516AB |
| pressure regulating valve | AR2000-08 |
| filter of pipe | SD-3543202 |
| Steering mechanical system | S3400Ja000D1 |
| Power-assisted of steering system | S3450Ja000D1 |
| Axle assembly | |
| Pin | AQPH-1600-010 |
| Spacer | AQPH-1600-011 |
| Oil seal | F659010 |
| Bearing | GE55ES-2RS |
| Slotted nut M24×3 | Q383B42 |
| Hex nut M20*1.5-110(10.9 Grade) | Q510B20110 |
| Inner sleeve | AQPH-1600-027 |
| Compound case | |
| SHIFT FORK; KERUI P/N:KR109.05.21;FOR XJ750 KERUI Hoist compound case | KR109.05.21 |
| O-ring 7×1675 | GB/T 3452.1-2005 |
| O-ring 28×3.55 | GB/T 3452.1-2005 |
| O-77.5×3.55 | GB/T 3452.1-2005 |
| Lip seal ring FB100x125x12 | GB/T 1378.1-2007 |
| Air filter | EF4-50 |
| Dust ring 25 | PDR-25 |
| Bearing 352216E 80x140x78 | GB/T 299-2008 |
| Bearing 31316 80x170x42.5 | GB/T 297-2015 |
| Bearing 32216 80x140x35.25 | GB/T 297-2015 |
| Bearing 30317 85x180x44.5 | GB/T 297-2015 |
| Bearing 6009 45x75x16 | BG/T 297-2015 |
| oil suction filter | TF-40x80L |
| pressure gauge M14x1.5 (01Mpa) | YN-63-I-M14x1.5 |
| oil pump | 3KNB-12.5B |
| Bearing 6316 80x170x39 | GB/T 276-2013 |
| Bearing NA4928 140x190x50 | BG/T 5801-2006 |
Field Failure Repair Case Studies
Case 1: JC750S Drawworks Brake Slippage
A Kerui JC750S drawworks experienced dangerous brake slippage during heavy hoisting due to worn non-asbestos friction blocks. Installing new Scan-Pac friction blocks (CPTX-LKR1064830503) and brake bands restored full braking capacity, ensuring safe rig operation.
Case 2: Angle Gearbox Bearing Failure
A seized 23024C bearing in the JC750S angle gearbox caused gear grinding and power transmission loss. Replacing the faulty bearing and fresh gear oil eliminated friction, restoring smooth torque transfer to the drawworks.
Case 3: Hydraulic Control Valve Leakage
A leaking Hawe hydraulic control valve (1606530045) caused inconsistent drawworks speed control and pressure loss. Replacing the valve and associated O-ring seals stabilized hydraulic pressure, returning precise drawworks control.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible with both Kerui JC750S and XJ750 rigs? | Yes, these spare parts are designed specifically for Kerui JC750S drawworks and fully compatible with XJ750 and XJ550 drilling rig hoist systems. |
| Do the brake components meet oilfield safety standards? | All brake bands and friction blocks are non-asbestos and comply with API 7K drilling equipment safety standards for reliable, secure hoist braking. |
| Are the bearings and seals certified to national standards? | Yes, all bearings follow GB/T 288/299 standards, and seals comply with GB/T 3452/13871 specifications, matching OEM quality and fit. |
Procurement Guidance
For drilling teams maintaining Kerui JC750S drawworks and XJ750/XJ550 rig fleets, this catalog is your definitive sourcing solution for high-quality, OEM-matched spare parts. It provides full transparency on part names, Kerui OEM part numbers, technical specifications, quantity requirements, and compatibility details, serving as both a formal procurement compliance standard and a practical field troubleshooting reference. Whether you need emergency brake components for sudden failures, bearings/seals for gearbox repairs, hydraulic valves for system maintenance, or sprockets/gears for major overhauls, every part is engineered to resolve common JC750S drawworks failures and deliver long-lasting performance in harsh oilfield conditions. Submit your detailed inquiry with specific Kerui part numbers, required quantities, and rig model details to secure precision-matched components tailored to your drawworks needs. Our technical team provides full compatibility verification, OEM certification documentation, and expert field repair support to streamline your procurement process and ensure seamless, efficient installation.
