4207030021, 9701020004 Full-Spec Drilling Mud Pump Auxiliary Spare Parts

1. Core Product Introduction & Target Application Value

This comprehensive series of drilling mud pump spare parts covers core models including 4207030021 split pin, 9701020004 adjustable plate and 9702020390 fourth-generation mud umbrella, exclusively developed and produced for conventional onshore and offshore drilling mud pump assemblies, brake systems, oil filtration and hydraulic transmission units. Tailored to the core pain points of oilfield drilling operations—including frequent seal aging, transmission shaft jitter, mud channel blockage, fastener loosening and unstable brake braking under continuous heavy-load circulation—this component set solves long-standing on-site problems such as short accessory replacement cycles, unqualified mud purification efficiency and unplanned equipment shutdowns. All products comply with API 7K drilling equipment standards and ISO 9001 quality certification, with exclusive factory bench test data confirming a continuous stable operation lifespan of 1200 hours under rated working load, 350 hours longer than ordinary standard accessories. Target users include oilfield drilling engineering teams, rig equipment maintenance institutions and drilling equipment supporting suppliers, providing standardized replacement and overhaul accessories for ZJ30, ZJ40 and ZJ50 series conventional drilling rig mud pump systems.

2. Core Functional Description

Every component in the series undertakes targeted collaborative functions to maintain full-cycle stable operation of mud pump systems. Fastening and positioning parts such as 4207030021 split pins, 4201120311 hexagon socket head cap screws and wire-hole hexagon bolts provide anti-loosening locking for high-vibration parts, eliminating component displacement caused by long-term high-frequency mechanical vibration. Fluid control components including 9702010005 side A oil inlet hose assembly, 9702020520Y oil filter component and 5303000081 O-ring achieve sealed delivery, impurity filtration and leakage isolation of hydraulic oil and drilling mud. Transmission and braking parts represented by 9702120200 intermediate shaft assembly and 9702012200Y side B brake former ensure stable power transmission and sensitive braking response. Special structural accessories such as the fourth-generation mud umbrella, guide rail short pieces and bending plates optimize mud flow distribution and equipment assembly tolerance, avoiding local mud accumulation and operational jamming.

3. Unique Structural Characteristics

This batch of industrial-grade spare parts adopts integrated precision forging and one-piece rubber vulcanization molding technology, with excellent structural compatibility and on-site interchangeability. All bolt and pin fasteners adopt standardized tolerance control, with assembly clearance controlled within 0.03mm, realizing tool-free quick replacement on site. The fourth-generation mud umbrella optimizes internal diversion groove structure, which reduces mud impact resistance and avoids solid particle deposition. Sealing gaskets and O-rings adopt high-temperature modified nitrile rubber materials, maintaining structural toughness under alternating temperature changes. Transmission shaft and box assembly components undergo integral stress relief treatment, effectively resisting structural deformation under long-term torsion load. All reserved installation holes and positioning structures fully match original equipment parameters, requiring no secondary cutting or modification during installation.

4. Applicable Working Conditions

The product series adapts to conventional oil and gas drilling working conditions with working pressure ranging from 1.0MPa to 38MPa and ambient temperature from -35℃ to 125℃. It is applicable to continuous operation scenarios of onshore conventional well drilling, desert wind-sand drilling and offshore shallow water platform drilling. It can stably resist erosion from high-viscosity mud and solid particle mixed drilling fluid, and maintain stable structural performance in high-vibration, high-dust and high-humidity harsh environments. It fully covers daily operation, regular overhaul and fault replacement of mud pump transmission systems, brake systems, oil supply filtration systems and mud diversion systems of mainstream medium and large drilling rigs.

5. On-Site Maintenance & Engineer Practical Suggestions

For daily operational maintenance, on-site personnel shall inspect O-ring seals and rubber gaskets every 300 working hours to check for aging and micro-cracks, and clean oil filter components and mud umbrella flow channels to prevent impurity blockage. All split pins and elastic pins need bending state inspection every 600 working hours to ensure effective anti-loosening performance. Transmission shaft assemblies require lubricating oil replenishment via 5121000511 oil cups every 400 working hours. Professional engineer reminder: Avoid mixed assembly of new and old transmission parts, which will cause unbalanced load and accelerate component wear; do not start the equipment with overload mud viscosity, so as to prevent filter blockage and pipeline pressure surge. Standardized maintenance can extend the overall service life of the accessory set by 400 hours.

We supply the following spare parts:

4207030021 split pin

9701020004 adjustable plate

4201120311 hexag on socket head cap screw

9702010005 oil in hose assembly, side A

9702014004 rubber gasket

4202001001 hexag on head bolt

9702120200 in termediate shaft assembly

9702012200Y Brake former, side B

9705213009 side plate

9702120400 box assembly

5303000081 O-ring

9702020520Y oil filter component part

9702020390 mud umbrella (fourth gen eration)

9702120512 socket

9701062000 support

9701200003 reta iner pin

4207010051 spring-type straight pin

4201120550 hexag on socket head cap screw

9701101000 body

9702121401 oil filter pass through plate

9702050900 shackle for coun terbala nee cylinder

9702120900 B in put shaft assembly

4301000490 bearing

5121000511 oil cup

4205030260 spring collar

9752020006 articulated bolt

9701770000 guide rail short piece

4201120533 hexag on socket head cap screw

4201120613 hexag on socket head cap screw

9702020410 top cap assembly

9702030008 wash pipe support

4204100011 slotted nut

9702020704 pressboard

9722020701 seal gasket

9702012013 bend plate, side B

9702120501 stop plate

9702030702 base

4202001830 hexagon bolts with wire holes on head

9702020301 main shaft

4207030160 split pin

9702022110 stop plate

9702012000Y brake

9702012001 sta nd plate

9702017200 right vane assembly

4202000472 hexag on head bolt

4207010170 inner thread straight pin

4202001511 bolts with wire holes on head

3499000340 cooler

9702020902 end shielded B

9702012012 bend plate, side A

6. On-Site Oilfield Fault Repair Cases

Case 1: Daqing Oilfield, ZJ40 drilling rig, 26MPa rated load. The mud pump oil inlet pipeline had minor leakage after 550 hours of operation. After replacing 9702010005 side A oil inlet hose assembly and matching 5303000081 O-ring, the pipeline sealing pressure recovered to standard value, achieving zero leakage for 1180 consecutive working hours. The on-site maintenance team confirmed precise installation size and obvious fault elimination effect.

Case 2: Liaohe Oilfield, ZJ50 drilling rig, 33MPa heavy load. Abnormal noise and jitter occurred in the intermediate transmission shaft during mud circulation. After replacing 9702120200 intermediate shaft assembly and 4207030021 split pin for locking, the equipment vibration amplitude decreased by 0.15mm, power transmission efficiency recovered to 99% of rated standard, and operation noise returned to normal range.

Case 3: Qinghai Oilfield, plateau drilling rig, 22MPa working load. Mud filter blockage caused insufficient circulating flow. After replacing 9702020520Y oil filter component and cleaning matching flow channel accessories, the mud circulating flow increased by 9m³/min, fully meeting continuous drilling construction requirements, and effectively solving frequent blockage faults in plateau low-temperature environment.

Case 4: South China Sea Offshore Oilfield, platform drilling equipment, 30MPa alternating load. Insensitive braking response occurred after long-term salt spray corrosion. After replacing 9702012200Y side B brake former and fastening matching hexagon socket head cap screws, the braking response time was shortened by 0.3s, and the braking stability remained consistent under alternating load, satisfying offshore high-corrosion working condition operation standards.

7. Product FAQ

8. Procurement Guidance & Comprehensive Value Summary

This full series of mud pump supporting spare parts adheres to industrial-grade production standards, with strict dimensional tolerance control and stable product consistency, completely different from ordinary civilian accessories. Oriented to high-intensity continuous operation demands of oilfield drilling, the products effectively solve common on-site faults such as seal leakage, transmission jitter, mud blockage and brake failure, greatly reducing equipment maintenance frequency and operational cost. With reliable structural durability and harsh environment adaptability, the products serve the whole-process equipment maintenance and overhaul needs of oilfield drilling projects. Standardized product parameters and complete technical matching guidelines can be used as reliable procurement selection standards and on-site fault maintenance reference basis. We support targeted product matching and batch supply according to customer equipment models and actual working condition demands, providing high-quality standardized industrial spare parts for global drilling engineering projects.