JC28, JX240 & BJX260 Series Full Supporting Components

1. Core Purpose & Target User Demand Orientation

This comprehensive component suite consisting of JC28 series, JX240 series and BJX260 series mechanical parts is professionally engineered for JC50DB and JC70DB series petroleum drilling equipment, fully matching YJ13B main motor, KCB-200 explosion-proof gear oil pump and supporting hydraulic and gas circuit systems. It targets the precise replacement, periodic overhaul and on-site fault repair demands of oilfield drilling engineering teams and mechanical maintenance departments. The product set solves prominent industry pain points including unstable gearbox output power, clutch slipping, hydraulic system oil leakage, gas circuit blockage and brake system attenuation under long-duration heavy-load drilling operations. All components are manufactured in compliance with GB national standards and petroleum machinery industry specifications, validated through 7900 hours of continuous field operation verification, delivering consistent structural stability and operational reliability for industrial heavy-duty drilling machinery.

2. Product Introduction

This supporting product portfolio covers full-spectrum core wearable and load-bearing parts for drilling equipment, including BJX260-02-00 hanging devices, JC28 series shafts, flanges, connecting plates and brake components, JX240/JX240B structural accessories, QJKT series multi-specification pipe joints, ATD330 and TPQ331 clutch assemblies, and NU328EC, 22236CC/W33 series heavy-duty rolling bearings. It is also equipped with XL-L15 air guide faucets, C-M60X2 air filters, HG4-692-67 standard oil seals, ZLYQC850-9.4F left gearbox output shafts and complete GB standard fasteners. Every part adopts precision forging and CNC finishing technology, achieving full structural compatibility with JC50DB1200 lubrication systems and JC50DB1400 gas line assemblies to support one-stop equipment maintenance and part renewal.

3. Core Functional Description

3.1 Stable Power Transmission & Load Operation

Matched with ZLYQC850-9.4F gearbox output shafts, JC28E-01-15 sprockets and heavy-duty bearings, the product forms a high-stability power transmission system. It eliminates power attenuation and transmission jitter caused by part wear and assembly gaps, resolving the long-standing pain point of unstable mechanical output during frequent start-stop and heavy-load cyclic operation of drilling equipment.

3.2 Reliable Braking & Anti-slip Protection

JC28B-07-00 brake drums and JC28A-02-08 casting brake blocks cooperate with ATD330 and TPQ331 clutch assemblies to achieve sensitive and stable braking and power separation. Paired with JC28A-02-15 balance weights, the system effectively offsets operational torque, avoiding clutch slipping and braking failure under full-load working conditions.

3.3 Efficient Fluid & Gas Circuit Control

QJKT series straight-through pipe joints, 20711-45-20 hydraulic hoses and HG4-692-67 oil seals ensure tight sealing and smooth transmission of hydraulic systems. XL-L15 air guide faucets and C-M60X2 air filters purify gas circuit medium, solving pipeline blockage, pressure loss and medium leakage faults that commonly occur in field high-dust environments.

4. Structural Characteristics

All components adopt modular integrated design with unified assembly benchmarks and high interchangeability for on-site rapid replacement. Custom JC28, JX240 and BJX260 core parts adopt high-strength alloy integral forging, featuring excellent compression resistance and deformation resistance. The optimized balance weight and hanging device structure realizes uniform load distribution, while explosion-proof structural design of KCB-200 oil pump meets field safety standards. Standardized pipe joints and sealing accessories achieve zero-gap assembly, effectively resisting vibration loosening and medium erosion in long-term working cycles.

5. Applicable Working Conditions

This series of accessories adapts to full-cycle working conditions of onshore oilfield drilling, well repair and heavy-load hoisting operations. It stably operates in open-air environments with temperatures ranging from -22℃ to 60℃, high dust concentration and continuous mechanical vibration. It is fully compatible with JC50DB and JC70DB series drilling host equipment, maintaining stable mechanical performance under long-term intermittent heavy-load and high-frequency start-stop operation scenarios.

6. On-site Maintenance & Engineer Practical Suggestions

Based on field maintenance experience accumulated from oilfield project services, oil seals and filter components require comprehensive replacement every 9 months to prevent aging failure. Brake blocks and clutch assemblies need wear detection and gap calibration every 5 months. Heavy-duty bearings should be supplemented with high-temperature lubricating grease regularly to reduce friction loss. Avoid running equipment with mismatched fasteners, which will cause structural fatigue and shortened service life. Standardized maintenance procedures can extend the overall stable operation duration of matching equipment by 1850 working hours compared with irregular maintenance modes.

We supply the following spare parts:

7. Field Fault Maintenance Cases

7.1 Hydraulic Leakage Fault in Daqing Oilfield

Location: Daqing Oilfield, Heilongjiang; Equipment Model: JC50DB1200 lubrication system; Operating Load: 83% rated load; Fault Data: Hydraulic oil leakage at flange joint, system pressure dropped 0.6MPa; Repair Scheme: Replace aging HG4-692-67 oil seal and worn flange assembly; Post-repair Index: Complete leakage elimination, system pressure restored to rated standard; Customer Feedback: Lubrication system operates continuously stable without repeated faults.

7.2 Clutch Slippage Fault in Tarim Oilfield

Location: Tarim Oilfield, Xinjiang; Equipment Model: TPQ331 clutch matching JC70DB drilling equipment; Operating Load: full continuous load; Fault Data: Obvious clutch slippage, power transmission efficiency decreased; Repair Scheme: Replace worn clutch assembly and calibrate brake gap; Post-repair Index: Slippage completely eliminated, power transmission recovered to normal level; Customer Feedback: Equipment load-bearing capacity fully restored.

7.3 Gas Circuit Blockage Fault in Changqing Oilfield

Location: Changqing Oilfield, Shaanxi; Equipment Model: JC50DB1400 gas line assembly; Operating Load: intermittent heavy load; Fault Data: Unsmooth gas supply, equipment auxiliary action delay; Repair Scheme: Replace clogged C-M60X2 air filter and clean pipeline joints; Post-repair Index: Gas supply smooth, action response sensitive; Customer Feedback: Gas circuit system performance significantly improved.

7.4 Transmission Abnormal Noise Fault in Shengli Oilfield

Location: Shengli Oilfield, Shandong; Equipment Model: ZLYQC850-9.4F gearbox supporting host; Operating Load: 78% rated load; Fault Data: Abnormal meshing noise during power output; Repair Scheme: Replace damaged bearing box and positioning pin parts; Post-repair Index: Abnormal noise eliminated, transmission operation smooth; Customer Feedback: Equipment failure frequency effectively reduced.

8. Product FAQ

9. Technical Standard & Procurement Guidance

All products are manufactured and inspected in strict accordance with GB/T national mechanical standards and petroleum industry professional specifications, with complete field test data and technical verification credentials, meeting industrial high-standard safety and performance requirements. This series of supporting components provides standardized and unified procurement specifications for daily maintenance, parts renewal and overall overhaul of JC50DB and JC70DB drilling equipment. Meanwhile, it serves as an authoritative technical reference for on-site personnel to diagnose faults, disassemble and assemble components, and optimize equipment operating parameters. Validated by multiple oilfield field applications, the product series delivers stable quality and excellent environmental adaptability. Users can select targeted matching accessories according to actual equipment models, operating loads and fault characteristics to achieve accurate equipment maintenance, stabilize mechanical operation performance and reduce overall operational failure risks.