275T/350T/500T/750T LWCV CDTL Actuator & BUW System Spare Parts

1. Product Overview & Core Operational Value

1.1 Compatible Equipment & Target User Requirements

This full range of precision industrial spare parts is professionally manufactured and supplied exclusively for 275-ton, 350-ton, 500-ton and 750-ton top drive drilling rig LWCV control and BUW stroke systems, matching AY10782 multi-spec CDTL hydraulic actuator assemblies and multi-voltage non-integrated/integrated LWCV interface kits. These components cater to the precise maintenance, system overhaul, on-site troubleshooting and seasonal equipment calibration needs of professional oilfield drilling crews, top drive hydraulic technicians and rig mechanical engineering teams. The product lineup resolves prevalent field pain points including LWCV actuator rotational offset, BUW tube structural abrasion, hydraulic hose pressure leakage, mud contamination erosion and inconsistent valve positioning calibration during long-duration heavy-load drilling and harsh downhole working cycles.

1.2 Authoritative Certification & Exclusive Field Verified Data

All manufactured components adhere to API 7K top drive mechanical standards and SAE J1926 hydraulic thread specifications, fully complying with global onshore drilling equipment operational and safety certification requirements. Validated through 4000-hour continuous field monitoring and independent third-party bench testing, graded GR8 fastener assemblies maintain stable anti-loosening performance through 3700 hours of cyclic drilling vibration; precision stop plate shims with thickness ranging from 0.015 inch to 0.120 inch sustain LWCV positioning accuracy within 0.02-inch tolerance for 3300 consecutive working hours; customized BUW inner and outer tube assemblies deliver structural integrity without deformation under 750-ton rated load. Every finished part undergoes hydraulic pressure testing, dimensional tolerance calibration and anti-corrosion fatigue inspection to provide standardized production, procurement and technical maintenance references.

2. Product Introduction & Functional Description

2.1 Core Product Composition

This integrated spare parts portfolio covers four key functional modules: Multi-tonnage LWCV actuator systems including universal 7.75-inch AY10782 actuators and 275T to 750T dedicated CDTL actuator models, paired with matched anti-rotation kits and voltage-specific interface kits; BUW stroke structural components consisting of outer tubes, inner tubes, stop rods, mounting lugs, retainers and mud deflectors; high-pressure hydraulic auxiliary parts including F451JS series custom-length hose assemblies, multi-standard ORFS/ORB/JIC adapters, locknuts and hex socket plugs; standardized fastening and precision calibration accessories covering graded fasteners, Nord-Lock lock washers, precision stop shims, grease nipples and elastic spring components.

2.2 Practical Working Functions

LWCV CDTL hydraulic actuators deliver accurate hydraulic drive and valve switching control for downhole well control systems, adapting to different tonnage top drive load demands. Dedicated anti-rotation kits eliminate actuator torsional deviation to maintain consistent operational precision. Multi-voltage interface kits support seamless electrical matching for 120VAC and 24VDC integrated and non-integrated control circuits. BUW structural assemblies stabilize 43-inch stroke operational travel and resist structural impact during heavy-load hoisting. Full-spec hydraulic fittings and custom hose assemblies ensure leak-free fluid transmission and stable hydraulic pressure output for LWCV control loops.

3. Structural Features & Applicable Working Conditions

3.1 Unique Structural Advantages

Multi-tonnage actuators adopt optimized CDTL structural design with targeted load adaptation for different tonnage top drive systems. Precision graded shims support micro-calibration of actuator stop positions, solving traditional positioning deviation defects. BUW tube assemblies adopt thickened seamless pipe structure with superior mud erosion resistance. Hydraulic conversion fittings adopt one-piece precision machining to eliminate thread gap leakage risks. GR8 fasteners and Nord-Lock locking structures provide dual anti-loosening protection for high-vibration drilling environments.

3.2 Adaptable Working Scenarios

This series of spare parts is engineered for conventional onshore oil and gas exploitation, deep well high-pressure drilling and long-cycle continuous heavy-load top drive operation. Components stably operate in ambient temperatures ranging from -40℃ to 87℃, resisting high dust pollution, mud corrosion and persistent mechanical vibration. All parts support 24-hour uninterrupted cyclic operation of 275-ton to 750-ton top drive LWCV and BUW stroke systems.

4. On-Site Maintenance & Engineer Operational Suggestions

Summarized from years of front-line oilfield maintenance experience, standardized upkeep effectively reduces system failure frequency: Replace hydraulic hose assemblies and sealing fittings every 800 working hours to prevent aging fatigue failure; calibrate actuator stop shim combination and anti-rotation assembly tightness every 600 working hours; clean mud deflectors and BUW tube inner cavities regularly to avoid impurity accumulation abrasion; inspect spring elasticity and fastener locking status after each heavy-load drilling cycle. Avoid mismatching tonnage-specific anti-rotation kits; conduct full-circuit pressure holding testing after hydraulic fitting replacement; never adjust shim thickness beyond standard calibration range.

We supply the following spare parts:

323-130-43 LUG MOUNT
323-14-0-43 STOP ROD
329050 RETAINER
329-350 GUIDE PLATE
DT113BM BUW OUTER TUBE
917-1664$ INN ER TUBE, BUW. 43 STRK, 750 TON
HI 520120303 ADAPTER LG, MALE 1G ORFS, 1B ORB
HI 5-62011303 LOCKNUT, BULK IE AD 1X2,13216-16 U N F
HI 5-6202200303 IL 90, MALE 1,2 ORFS, HALE 1(2 CM HI 562070103 UL 90. BULKHEAD. HALE IE ORFS
Ml 2-1000010 GREASE NIPPLE. IB HPT. STRAIGHT
Ml 4-1018-010 SPRING. 150 DIA HOE. 0.75 DA ROD
Ml 7-1004010 ROLL PHI, 9161150
SH-0625 NC-Q200-W CAPSCR, HEX SOCHD.5B-11 UNC x2j00
SH-0500 NC-Q250-W CAPSCR, HEX SOC HD, 12-13UNC x2ffl.W
F451JS JS08030846.3fl-.X-43 5 HOSE ASSY. 12,SWV STR. 4630
CT 12300 COVE R. BOLT RETAIN ER. 43 25 BUW
mO5Q0NCO3Q0-GR8A7 CAPSCR, H EX H D, 12-13UNC x 3 JOO, GR3, W
FWO500-A WASHER F, 12, R.A1N.TYPE A
12000-010 WIRE ROPE, 1216″DLA
Ml 90006010 OVAL 3.EEVE 1,16* DLA AUMINIUH
DT14541-005 SUM. O.OOS
FT 14541010 311.1,0.01 (T
CT 14541030 3ilM,a.03
CT 14542005 3113,0.005
CT 14542010 3iM.a.oicr
CT 14542030 31 LI ,0.03
AY10782 ACTUATOR ASSY, LWCV, CDTL, 7.75, HDY
AY10782-275 ACTUATOR ASSY, LWCV, CDTL, 6027
AY10782-350 ACTUATOR ASSY, LWCV, CDTL, 8035
AY10782-500 ACTUATOR ASSY, LWCV, CDTL, 1050
AY10782-750 ACTUATOR ASSY, LWCV, CDTL, 1275
AY11920-1 KIT, INTERFACE, LWCV, NON-INTG, 120 VAC
AY11920-2 KIT, INTERFACE, LWCV, NON-INTG, 24 VDC
AY11920-3 KIT, INTERFACE, LWCV, INTG, 24 VDC
AY12237 GUARD ASSY, ACTUATOR, LWCV
AY14046 KIT, ANTI-ROTATION, LWCV, 275T
AY14056 KIT, ANTI-ROTATION, LWCV, 350T
AY14066 KIT, ANTI-ROTATION, LWCV, 500T
AY14260 KIT, ANTI-ROTATION, LWCV, 750 T 3 IN
SC10046 MAINTENANCE SCHEDULE, LWCV ACTUATOR
LW-0375-NL LOCKWASHER, 3/8 NORD-LOCK
H15-140109P-02 PLUG, SOC HEX, 1/8 NPT
DT13655 DEFLECTOR, MUD, LWCV
HH-0375NC-0100-GR8-W CAPSCR, HEX HD, 3/8-16UNC x 1.00, GR8, W
DT14150 PLATE, STOP, LWCV ACTUATOR, 7.70 IN
HH-0375NC-0125-GR8-W CAPSCR, HEX HD, 3/8-16UNC x 1.25, GR8, W
DT14159-120 SHIM, STOP PLATE, ACTUATOR, 0.120 THK
DT14159-015 SHIM, STOP PLATE, ACTUATOR, 0.015 THK
DT14159-030 SHIM, STOP PLATE, ACTUATOR, 0.030 THK

5. Field Maintenance & Repair Cases

Case 1: Tarim Oilfield 750T LWCV Positioning Drift Fault

Location: Tarim Deep Well Drilling Site; Equipment Model: 750 Ton Top Drive AY10782-750 LWCV System; Working Load: 290-ton cyclic drilling load; Fault Data: Long-term vibration caused actuator positioning drift and unstable valve switching; Repair Plan: Install AY14260 dedicated anti-rotation kit and calibrated multi-thickness stop shims; Restoration Index: Actuator positioning deviation eliminated, valve switching response consistent; Customer Feedback: Stabilized downhole well control and reduced unplanned downtime.

Case 2: Sichuan Gas Field BUW Tube Abrasion Fault

Location: Sichuan Onshore Gas Drilling Site; Equipment Model: 750T BUW 43-inch Stroke System; Working Load: 265-ton continuous operation load; Fault Data: Mud erosion caused inner tube surface abrasion and structural instability; Repair Plan: Replace standard BUW inner tube and mud deflector assembly; Restoration Index: BUW stroke operation smooth, no structural friction or deformation; Customer Feedback: Eliminated structural hidden dangers and extended equipment service life.

Case 3: Ordos Oilfield 350T Hydraulic Circuit Leakage Fault

Location: Ordos Conventional Oilfield Site; Equipment Model: 350 Ton LWCV Hydraulic Control Loop; Working Load: 240-ton stable drilling load; Fault Data: Aging hose assembly caused micro leakage and hydraulic pressure drop; Repair Plan: Replace F451JS series custom high-pressure hose assembly; Restoration Index: Circuit maintains stable rated pressure without pressure drop; Customer Feedback: Resolved hydraulic leakage faults and improved operational stability.

Case 4: Xinjiang Oilfield 275T LWCV Signal Mismatch Fault

Location: Xinjiang Onshore Heavy-Duty Drilling Site; Equipment Model: 275T Top Drive LWCV Control System; Working Load: 230-ton intermittent heavy load; Fault Data: Aging interface kit caused 24VDC control signal delay; Repair Plan: Install AY11920-3 integrated 24VDC interface kit; Restoration Index: Control signal transmission real-time and stable, no intermittent failure; Customer Feedback: Completely solved electrical control faults and improved working efficiency.

6. Product FAQ

7. Technical & Procurement Guidance

This complete set of multi-tonnage LWCV actuator and BUW system spare parts is manufactured with rigorous quality control procedures, equipped with full factory test reports, dimensional calibration documents and material performance certificates, providing reliable standardized procurement guidelines and professional on-site fault resolution references for drilling engineering teams. Each component is purpose-built to resolve common field issues including actuator positioning deviation, hydraulic leakage, mud erosion and electrical signal instability, minimizing unplanned equipment downtime and routine maintenance costs. Featuring precise dimensional matching, excellent vibration resistance and harsh environment adaptability, these modular spare parts support full-cycle overhaul, daily calibration and emergency repair of 275T to 750T top drive LWCV and BUW systems. Users can select customized accessories based on actual equipment tonnage, control voltage configuration and field working conditions to sustain stable and efficient operation of top drive well control and hydraulic systems.