JC28 & BJX260 Series Drilling and Hoisting Mechanical Accessories

1. Core Product Purpose & Target User Demand Orientation

This full set of mechanical accessories centered on JC28 series and BJX260 series components, matching ZJZ valve joints, Y3030 hydraulic jacks, W270C306A2 clutch assemblies and GB standard fasteners, is exclusively developed for JC70DB1300 automatic drilling devices and 2LYQC850 series gearbox drilling and hoisting equipment. It precisely meets the core demands of oilfield engineering teams and equipment maintenance manufacturers for long-term heavy-load operation stability, rapid fault replacement and standardized equipment overhaul. The product set targets and resolves common industry pain points including gear transmission jitter, hydraulic oil circuit blockage, braking system failure, fastener loosening and shaft sleeve abrasion under continuous field operation. Verified by 7200 hours of uninterrupted field operation tests, the component matching tolerance and structural stability reach professional industry standards, providing reliable technical and procurement support for industrial heavy machinery operation.

2. Complete Product Introduction

The supporting product portfolio covers core wearable and load-bearing parts, including BJX260-10 keys, NJU-400×180F-C oil suction filters, JC28 series positioning sleeves, shaft sleeves and brake assemblies, left and right hand threaded nuts and screws, 324WCB4B inner hole ring gears, and 2LYQC850-9.4F left gearbox components. It is also equipped with HG4-692-67 standard oil seals, GB/T series standard bolts and washers, Z1 diverter valves and TCB0-00 crown block supporting parts. All products adopt customized precision machining and integrated forging technology, with full compatibility for JC70DB1300 automatic drilling equipment and supporting hoisting systems, realizing one-stop part replacement and maintenance matching service.

3. Core Functional Description

3.1 Stable Transmission & Power Output

Matched with BJX260 series keys, 8JX260B-03 gears, ring gears and output shafts, the product forms a complete mechanical transmission system. It effectively offsets power attenuation caused by part wear and assembly gaps, solves the pain point of unstable equipment power output under frequent start-stop and heavy-load working conditions, and maintains consistent transmission efficiency of drilling and hoisting equipment.

3.2 Precise Braking & Positioning Control

JC28A series brake belt assemblies, brake stops and positioning sleeves achieve accurate positioning and sensitive braking response. They eliminate hidden dangers such as delayed braking and positioning deviation of drilling equipment during high-precision operation, ensuring operational safety and accuracy of field engineering construction.

3.3 Oil Circuit Filtration & Sealing Protection

NJU-400×180F-C oil suction filters and HG4-692-67 standard oil seals effectively filter impurity particles in hydraulic oil circuits and block external dust and moisture infiltration. This solves common faults such as oil circuit blockage, hydraulic pressure instability and internal component corrosion, extending the stable operation cycle of hydraulic systems.

4. Structural Characteristics

All components adopt modular assembly design with unified industrial assembly benchmarks and high interchangeability. Custom JC28 and BJX260 series parts feature integral forging structure with strong compressive and wear resistance. The matching left and right thread fasteners and copper gaskets optimize assembly tightness, while straight-through pipe joints and vertical cotter parts ensure smooth pipeline transmission and firm structural fixation. The integrated chain pulley and limiting structure avoid operational deviation and part dislocation, adapting to complex field assembly and disassembly scenarios.

5. Applicable Working Conditions

This series of accessories is suitable for full-cycle operation of onshore oilfield automatic drilling, well repairing and heavy-load hoisting equipment. It stably adapts to open-air working environments with ambient temperatures ranging from -20℃ to 55℃, high dust concentration and continuous vibration load. It fully matches the operating parameters of JC70DB1300 automatic drilling devices and supporting gearbox hoisting systems, covering conventional drilling, load lifting and equipment debugging working scenarios.

6. Engineer On-site Maintenance & Avoidance Suggestions

Based on long-term field maintenance experience, oil suction filters require thorough cleaning every 2 months and integral replacement every 9 months to prevent filter clogging from reducing hydraulic power. Transmission keys and gears need lubrication supplementation every 3 months to reduce friction wear. Braking system components should be inspected for wear and gap deviation every 6 months. It is forbidden to operate equipment with mismatched threaded fasteners, which will cause structural vibration and part fatigue damage. Standardized maintenance can increase the overall stable operation duration of the equipment by 1600 working hours compared with irregular maintenance modes.

We supply the following spare parts:

7. On-site Field Fault Maintenance Cases

7.1 Hydraulic Oil Circuit Blockage Fault in Daqing Oilfield

Location: Daqing Oilfield, Heilongjiang; Equipment Model: JC70DB1300 automatic drilling device; Operating Load: 80% rated load; Fault Data: Hydraulic system pressure dropped 0.6MPa, equipment lifting speed slowed down significantly; Repair Scheme: Replace NJU-400×180F-C oil suction filter and clean oil pipeline; Post-repair Index: Hydraulic pressure recovered to rated standard, operating speed returned to normal; Customer Feedback: Hydraulic system operates stably without repeated faults.

7.2 Transmission Jitter Fault in Tarim Oilfield

Location: Tarim Oilfield, Xinjiang; Equipment Model: 2LYQC850-9.4F left gearbox matching equipment; Operating Load: full continuous load; Fault Data: Obvious transmission jitter, abnormal gear meshing noise; Repair Scheme: Replace BJX260-10 key and worn gear parts; Post-repair Index: Jitter and abnormal noise eliminated, transmission operation smooth; Customer Feedback: Equipment power stability greatly improved.

7.3 Braking Delay Fault in Shengli Oilfield

Location: Shengli Oilfield, Shandong; Equipment Model: JC28A brake assembly supporting drilling equipment; Operating Load: intermittent heavy load; Fault Data: Braking response delay reached 1.1 seconds; Repair Scheme: Replace aging brake belt assembly and calibrate positioning gap; Post-repair Index: Delay reduced to normal range, braking response sensitive; Customer Feedback: Braking performance meets field safety operation standards.

7.4 Shaft Sleeve Wear Fault in Liaohe Oilfield

Location: Liaohe Oilfield, Liaoning; Equipment Model: JC28 series shaft sleeve matching host; Operating Load: 75% rated load; Fault Data: Shaft sleeve wear caused slight shaft body runout; Repair Scheme: Replace JC28/11-06-04 shaft sleeve and adjust assembly clearance; Post-repair Index: Shaft body runs flexibly and stably; Customer Feedback: Equipment failure frequency effectively reduced.

8. Product FAQ Table

9. Technical Standard & Procurement Guidance

All products are manufactured and inspected in strict accordance with GB/T national mechanical standards and industrial professional specifications, with complete field test data and technical verification basis. This accessory set provides standardized and unified procurement specifications for daily maintenance, parts renewal and equipment overhaul of automatic drilling and hoisting machinery, and also serves as an authoritative technical reference for on-site personnel to diagnose faults, disassemble and assemble equipment, and optimize operating parameters. With stable quality and excellent field adaptability verified by multiple oilfield project applications, these products can accurately solve various common mechanical and hydraulic faults of drilling and hoisting equipment. Users can select matching accessories according to actual equipment models, operating loads and fault characteristics to realize precise equipment maintenance and long-term stable operational guarantee.