PSZ75B-70D-B-04-00 Friction Disc & BK-Z Hydraulic Power Unit Matching Component Assembly

1. Product Overview & Core Application Purpose

This integrated component assembly centers on the PSZ75B-70D-B-04-00 friction disc and BK-Z hydraulic power unit, fully compliant with GB894.2-86, GB93-87, GB5782-86 and JB/T978-1977 authoritative industrial standards. It is professionally engineered for TK30 series control systems and matched service brake valve assemblies, targeting core segmented demands of oilfield exploitation equipment, heavy engineering machinery and industrial hydraulic braking system users. The assembly solves prevalent industry pain points including insufficient friction braking force, hydraulic pipeline pressure loss, movable part jamming, and valve group control failure under long-duration heavy-load operation. Verified by exclusive 26000 hours of continuous load operation testing, the complete parts combination delivers stable friction transmission, precise hydraulic control and durable structural support, serving as standard replacement and system upgrade accessories for high-intensity industrial hydraulic and braking equipment.

2. Product Introduction

The product portfolio covers full-range supporting parts for BK-Z hydraulic power units and TK30 control systems, including core PSZ75B-70D-B-04-00 friction discs, multi-specification YX and BK series sleeves, elastic guide sleeves, lever assemblies and cylinder back covers. It also includes standardized national standard fasteners, high-pressure hoses, globe valves, pipe joints, sealing rings and customized steel plate structural parts. All components adopt unified modular calibration, achieving seamless docking with TK11 and TK30 series host equipment. Each part undergoes strict pressure resistance, wear resistance and sealing testing, ensuring unified compatibility and interchangeability for industrial equipment maintenance and assembly production.

3. Core Functional Description

This component set undertakes friction braking, hydraulic power transmission, mechanical positioning and pipeline control functions for industrial equipment. The PSZ75B-70D-B-04-00 friction disc provides stable friction torque for braking systems; elastic guide sleeves and multi-model sleeves eliminate linear motion friction and structural offset; BK-F-G2 and QJH-15G globe valves regulate hydraulic circuit switching and pressure stabilization; high-pressure hoses and standard pipe joints ensure unobstructed fluid transmission without pressure loss; clevis pins, bolts and washers maintain overall structural anti-loosening and positioning stability; customized parking knobs and brake pads realize manual control and auxiliary braking protection for equipment.

4. Structural Characteristics

The assembly adopts high-precision modular integrated structure with strong structural stability and universal compatibility. The BK-GB-2 guide band with 380mm effective length achieves full-stroke gap compensation to avoid operational jamming. The matched YX-SR-6 sealing ring and standard circlip structure realizes full-link sealing and anti-drop protection. Dual valve group configuration optimizes hydraulic circuit distribution and improves control response efficiency. All fasteners follow national standard dimensional specifications for direct plug-and-play replacement. The integral TK30 steel plate structure enhances overall load-bearing capacity, adapting to frequent start-stop and heavy-load working states.

5. Applicable Working Conditions

This series of components is suitable for high-intensity complex industrial scenarios, mainly including onshore oilfield drilling and production equipment, heavy-duty construction machinery braking systems, fixed hydraulic power stations and automated fluid control production lines. It stably adapts to working environments with ambient temperatures from -25℃ to 65℃, and tolerates dust accumulation, slight vibration and humid working conditions. It supports long-term uninterrupted operation of TK30 control systems and BK-Z hydraulic power units, applicable to daily operation, regular maintenance and system transformation of heavy-load industrial equipment.

6. Maintenance Guidelines & Engineer Practical Tips

Professional industrial maintenance engineers summarize standardized maintenance specifications for this assembly. Inspect the wear degree of friction discs and brake pads every 30 days to avoid reduced braking torque caused by surface abrasion. Check the tightness of M10 and M12 standard bolts and the flexibility of lever structures every 45 days. Clean valve group interiors and high-pressure hose pipelines every 90 days to prevent impurity blockage. Replace aging sealing rings and deformed washers in a timely manner. Standardized cyclic maintenance can extend the comprehensive service life of the component assembly by 7500 hours compared with irregular maintenance, effectively reducing sudden equipment shutdown risks.

We supply the following spare parts:

7. On-Site Field Maintenance Cases

Case 1: Xinjiang Oilfield Drilling Equipment Fault

Equipment Model: TK30 Control System Supporting Hydraulic Braking Unit; Load: 110kN continuous rated load; Fault Manifestation: Insufficient braking friction, slow system response; Repair Solution: Replace PSZ75B-70D-B-04-00 friction disc and YX-3-6C5 support arm sleeve; Restored Index: Braking torque reaches standard rated value, response delay eliminated; Customer Feedback: Equipment braking performance fully restored, stable for long-shift continuous operation.

Case 2: Changqing Oilfield Hydraulic Power Unit Fault

Equipment Model: BK-Z Hydraulic Power Unit Matching Pipeline System; Load: 75% long-term steady load operation; Fault Manifestation: Hydraulic pipeline pressure loss and weak valve control sensitivity; Repair Solution: Replace JB1885 high-pressure hose and BK-F-G2 globe valve; Restored Index: Pipeline pressure maintains constant without loss, valve switching response within 0.2s; Customer Feedback: Solved persistent pressure instability issue, improved equipment operation stability.

Case 3: Liaohe Oilfield Mechanical Braking Device Fault

Equipment Model: TK11-01-00A Service Brake Valve Assembly; Load: High-frequency start-stop cyclic load; Fault Manifestation: Lever jamming and positioning deviation; Repair Solution: Replace BK-5-6A lever and BK-7-7A8 axle sleeve; Restored Index: Mechanical movement flexible and free of jamming, positioning accuracy fully compliant with factory standards; Customer Feedback: Fault completely resolved, no recurring failures after two months of continuous use.

Case 4: Tarim Oilfield Industrial Control Equipment Fault

Equipment Model: TK30-01-02 Valve Group 2 Matching System; Load: Sustained high-pressure working load; Fault Manifestation: Local oil leakage and unbalanced hydraulic output; Repair Solution: Replace YX-SR-6 sealing ring and GB894.2-86 shaft circlip; Restored Index: Zero leakage in 72-hour continuous pressure test, balanced hydraulic output; Customer Feedback: Maintenance effect is stable, effectively reducing daily maintenance workload.

8. Product FAQ

9. Procurement Reference & Closing Description

This complete set of PSZ75B-70D-B-04-00 and BK-Z series matching components strictly implements national mechanical industry standards and industrial manufacturing specifications, with all products passing long-term aging testing and on-site working condition verification. Relying on 26000 hours of stable operation test data and abundant oilfield on-site maintenance experience, the product set effectively solves common technical problems such as insufficient braking power, hydraulic pressure loss and mechanical jamming of industrial hydraulic equipment. With standardized specifications, strong compatibility and easy maintenance features, it provides unified procurement standards for equipment supporting assembly and batch replacement. It also delivers reliable technical reference for daily equipment maintenance and fault troubleshooting. Suitable for bulk procurement by engineering machinery supporting manufacturers, oilfield operation and maintenance teams, and industrial hydraulic equipment service institutions, all products maintain stable quality and complete technical parameter supporting services.