ZJ-30DBS & ZJ-40CZ Drilling Rig Drawworks Brake, Hydraulic & Pneumatic System Spare Parts

1. Product Overview & Core Operational Value

1.1 Applicable Equipment & Target User Demands

This full spectrum of precision industrial spare parts is professionally manufactured and supplied exclusively for ZJ-30DBS reversible multi-port valve block stations and ZJ-40CZ series conventional drilling rigs, fully covering drawworks disc brake assemblies, hydraulic power units, pneumatic control components, high-pressure hose sets, filter assemblies, clutch units and customized molding accessories. These components accurately serve the refined maintenance, seasonal overhaul, emergency fault replacement and system calibration requirements of onshore oilfield drilling teams, rig hydraulic technicians and mechanical overhaul personnel. The product lineup targets common field pain points including drawworks brake failure, hydraulic system pressure drift, pneumatic control lag, filter blockage and clutch friction attenuation during long-cycle heavy-load drilling operations.

1.2 Authoritative Standards & Exclusive Field Verified Data

All finished components comply with API Spec 7K drilling machinery safety standards and national GB/T13871 hydraulic accessory specifications, fully meeting mainstream onshore drilling rig operational certification requirements. Validated by 4000-hour continuous field endurance tracking and third-party bench testing, matched disc brake working cylinders maintain stable clamping pressure without attenuation for 3200 consecutive working hours; 215bar high-pressure hydraulic hoses sustain zero leakage under rated cyclic pressure impact; pneumatic control valves deliver precise response without delay through 3600 hours of high-frequency switching operation. Every part undergoes hydraulic pressure holding testing, dimensional tolerance calibration and material fatigue inspection to form unified production, procurement and on-site fault-solving technical benchmarks.

2. Product Introduction & Functional Description

2.1 Core Product Composition

This integrated spare parts portfolio covers four core functional modules: Drawworks brake system components including KG-00 working cylinders, BG-00C emergency cylinders, KQ-21 working brake dams, BQ-22 accident brake dams, W30-07-902 brake discs and multi-spec brake mold assemblies; hydraulic power and control parts consisting of KCB-55 gear oil pumps, QF514D relief valves, QKPJ-½” drain valves, ISV and TF series oil filters and multi-model high-pressure load hoses; pneumatic control assemblies featuring 23Q-L15-K air valves, QY11 relay valves, S-QY10B return pressure regulators and ZJ70D quick release valves; transmission and auxiliary units including multi-spec friction discs, air bladders, LT series clutches, gear couplings, momentometers, jaw sets and standardized spring retaining rings.

2.2 Practical Working Functions

Disc brake cylinder and dam assemblies provide stable working braking and emergency locking protection for drilling rig drawworks, preventing uncontrolled pipe running during tripping operations. Gear oil pumps and relief valves maintain constant hydraulic system pressure and circulating oil supply, eliminating pressure fluctuation and oil supply insufficiency. Pneumatic control valve groups realize sensitive and accurate gas circuit switching to support remote and on-site braking control. High-pressure hoses and filter assemblies ensure unobstructed hydraulic medium circulation and impurity filtration, protecting precision valve elements from abrasion. Clutch and friction disc assemblies guarantee stable power transmission for drawworks operation, reducing power loss and slipping risks.

3. Structural Features & Applicable Working Conditions

3.1 Unique Structural Advantages

Brake cylinder assemblies adopt integral forging structure with thickened pressure-bearing walls, effectively solving cylinder deformation and internal leakage defects under long-term heavy load. Multi-layer composite brake molds and friction discs feature high temperature resistance and low wear rate, extending service life under frequent braking cycles. Pneumatic valve elements adopt precision spool structure with low friction and rapid response, avoiding control lag. Standardized GB/T molding accessories ensure zero assembly gap and perfect compatibility with ZJ series rigs. High-pressure hydraulic hoses adopt double-layer steel wire braided structure to resist pressure impact and bending fatigue.

3.2 Adaptable Working Scenarios

This series of spare parts adapts to conventional onshore oil and gas exploitation, medium and deep well drilling and long-cycle continuous heavy-load operation of ZJ-30DBS and ZJ-40CZ drilling rigs. Components stably operate in ambient temperatures ranging from -40℃ to 85℃, resisting high dust accumulation, mud erosion and frequent mechanical vibration. All parts support 24-hour uninterrupted cyclic operation of drawworks braking, hydraulic power supply and pneumatic control systems.

4. Engineer Practical Maintenance Suggestions

Summarized from front-line oilfield overhaul experience, targeted maintenance effectively reduces system failure frequency: Replace brake friction discs and molds every 700 working hours to prevent braking force attenuation; clean oil filter elements and pipeline impurities every 500 working hours to avoid hydraulic blockage; inspect pneumatic valve response sensitivity and air bladder tightness quarterly; check high-pressure hose surface wear and joint sealing conditions after each heavy-load drilling cycle. Avoid mixed installation of non-standard molds and sealing parts; conduct full-pressure holding testing after hydraulic component replacement; do not adjust relief valve pressure parameters arbitrarily without professional calibration.

We supply the following spare parts:

5. On-Site Field Maintenance Cases

Case 1: Tarim Oilfield ZJ-40CZ Braking Force Insufficiency Fault

Location: Tarim Onshore Medium-Deep Drilling Site; Equipment Model: ZJ-40CZ Rig Drawworks Brake System; Working Load: 260-ton cyclic drilling load; Fault Data: Worn friction disc caused insufficient braking torque and slow stop response; Repair Plan: Replace matched brake mold and friction disc assembly; Restoration Index: Braking torque restored to rated standard, equipment stop response rapid and stable; Customer Feedback: Eliminated potential safety hazards of drilling tool sliding and improved operational safety.

Case 2: Sichuan Gas Field Hydraulic Pressure Instability Fault

Location: Sichuan Onshore Gas Drilling Site; Equipment Model: ZJ-30DBS Hydraulic Power System; Working Load: 230-ton continuous operation load; Fault Data: Blocked oil filter and aging relief valve caused system pressure fluctuation; Repair Plan: Replace TF-63 oil filter element and QF514D relief valve; Restoration Index: Hydraulic system pressure constant with zero fluctuation; Customer Feedback: Solved intermittent hydraulic jitter faults and stabilized rig operation.

Case 3: Ordos Oilfield Pneumatic Control Lag Fault

Location: Ordos Conventional Oilfield Site; Equipment Model: ZJ-40CZ Pneumatic Control Valve Group; Working Load: 245-ton heavy hoisting load; Fault Data: Dirty valve core caused gas circuit switching delay; Repair Plan: Clean valve core and replace aging sealing accessories; Restoration Index: Pneumatic control response recovered to millisecond-level sensitivity; Customer Feedback: Improved braking control accuracy and field operation efficiency.

Case 4: Xinjiang Oilfield Hydraulic Hose Leakage Fault

Location: Xinjiang Heavy-Duty Drilling Site; Equipment Model: 215Bar High-Pressure Hydraulic Hose Assembly; Working Load: 220-ton stable drilling load; Fault Data: Long-term vibration abrasion caused micro leakage at hose joint; Repair Plan: Replace 5/16” 215bar high-pressure hose and sealing fittings; Restoration Index: Hydraulic circuit zero leakage and stable pressure holding; Customer Feedback: Reduced hydraulic oil consumption and avoided unplanned downtime.

6. Product FAQ

7. Technical & Procurement Guidance

This full range of ZJ-30DBS and ZJ-40CZ drilling rig drawworks brake, hydraulic and pneumatic system spare parts is manufactured under strict industrial quality control protocols, equipped with complete factory performance test reports, dimensional calibration certificates and material quality verification files, providing standardized procurement screening criteria and professional on-site technical fault-solving references for drilling engineering teams. Each component is purpose-built to resolve common field faults including insufficient braking force, hydraulic pressure instability, pneumatic control lag and pipeline leakage, effectively lowering unplanned equipment downtime and daily maintenance costs. Featuring precise dimensional compatibility, high pressure resistance, wear resistance and harsh environment adaptability, these modular spare parts support full-cycle refined overhaul, daily calibration and emergency repair of ZJ-30DBS and ZJ-40CZ drilling rig core systems. Professional-grade manufacturing processes ensure full compatibility with original equipment, allowing engineering teams to select targeted accessories according to actual equipment parameters and field working conditions to sustain long-term stable and efficient operation of drilling rigs.