ZLYQC850 Series Transmission Parts, AF700 Butter Lubrication System

1. Core Application Orientation & Segmented User Demand

1.1 Core Usage & Matched Host Equipment Model

This batch of ZLYQC/ZLYQL serial reducer transmission components, AF700 series lubrication and structural accessories, pneumatic control valve assemblies, hydraulic pressure monitoring parts and standardized threaded fasteners is professionally manufactured for ZLYQC850 heavy-duty planetary reducer and ZLYQL350 auxiliary drive reducer, fully compatible with 2400HP-3700HP onshore oilfield drawworks equipped with AF700201-010900B3 butter lubrication system and BG-80(II) normally closed pneumatic brake assembly. All finished components comply with API 7K rotary hoisting equipment safety specification, ISO 6194 static sealing standard, GB/T 4323 flexible coupling standard and IEC 60079-15 explosion-proof solenoid component certification. Production fabrication workshops hold ISO 9001 full lifecycle quality certification and SGS pneumatic fatigue load testing qualification, providing traceable OEM interchangeable spare parts for 24-hour cyclic heavy-load drilling hoisting operation. Target segmented users cover inland desert drilling site maintenance teams, oilfield mechanical centralized procurement departments, reducer overhaul contractors, pneumatic control loop debugging teams and third-party rig spare part inventory suppliers. Core user demands include full-size zero-modification onsite replacement, stable grease circulating lubrication efficiency, accurate pneumatic brake interlock action, matched gear case assembly tolerance, and integrated one-stop part sourcing to resolve reducer gear meshing abrasion, lubrication pipeline blockage, brake valve delayed locking and pneumatic signal disorder common field faults.

1.2 Pre-positioned On-site Drilling Field Pain Points Solved

• Generic aftermarket partition sleeves and flat keys cause gear axial offset exceeding 0.4mm under 310kN continuous hoisting torque, aggravating unilateral tooth surface abrasion of ZLYQC850 driving gear

• Ordinary pneumatic control valves fail to isolate desert sand impurity, leading to spool jamming and incomplete closing of BG-80(II) normally closed brake valve under cyclic pneumatic impact

• Common customized copper pipes generate inner wall scaling after long-term butter grease circulation, reducing lubrication flow and causing bearing local dry friction

• Non-standard gear case mating fasteners loosen under drawworks high-frequency vibration, triggering gearbox butter grease leakage and external grit intrusion

2. Standardized Full Product Technical Introduction

2.1 Complete Product Portfolio Overview

This spare part set covers six core functional modules: ZLYQC850 gear, partition sleeve, end cover, flat key and adapter transmission parts; WG00707006/WG00707007 left and right transmission gear cases; AF700 butter lubrication system, oil return line and integrated oil filter assembly; explosion-proof solenoid valves, multi-way air guide valves, YTN-60 dual-scale pressure gauge and Y-63B relief valve fluid control components; BG-80(II) normally closed brake valve, NL8 flexible coupling and positioning block power brake parts; GB-standard bolts, multi-spec nuts, spring washers, copper washers and bent pipe connectors. High-frequency searched core models include AF700201-010900B3 butter lubrication system, BG-80(II) normally closed brake valve, MFH-3-1/8-EX24DC explosion-proof solenoid valve and NJU-250X180F oil suction filter. Exclusive onsite tested data verified by oilfield third-party labs: this OEM-matched component set extends ZLYQC850 drawworks lubrication-brake combined overhaul cycle by 1260 working hours, and cuts pneumatic loop debugging workload by 7 working hours per bimonthly maintenance compared with modified universal aftermarket parts.

2.2 Core Functional Description

All components achieve coordinated linkage for drawworks mechanical transmission, grease circulating lubrication, pneumatic braking protection, loop pressure regulation and impurity filtration. ZLYQC series gear, partition sleeve and key assemblies stabilize gear meshing gap and torque transmission; paired left-right gear cases form fully enclosed protective cavity for drive gear sets; AF700 butter lubrication system delivers high-viscosity butter grease to bearing and gear friction pairs; copper pipes, elbow fittings and oil return lines build closed grease circulation loop; multi-way pneumatic valves switch air path direction to control BG-80(II) brake valve opening and closing; relief valve and dual-scale pressure gauge stabilize pneumatic loop rated pressure; oil suction filter intercepts grease mixed metal abrasive particles; flexible coupling realizes buffer power transmission; positioning blocks and adjusting cushions calibrate assembly mounting position for whole drive unit.

2.3 Optimized Structural Characteristics

ZLYQC transmission gear adopts carburized quenching tooth surface with anti-scuffing treatment; AF butter lubrication pump body adds anti-caking inner liner for high-viscosity grease delivery; MFH explosion-proof solenoid valve adopts flameproof enclosed coil structure compliant Zone2 hazardous area standard; all finished copper pipes adopt low-temperature annealing forming to avoid grease flow dead angle; BG-80(II) brake valve spool adopts ceramic coating for anti-grit abrasion; gear case flange adds integrated positioning boss for assembly concentricity control. Field-friendly design: unified flange mounting datum for ZLYQC850 mating components, laser-etched assembly tolerance mark, detachable filter cartridge structure for tool-free onsite replacement.

2.4 Adaptable Oilfield Working Conditions

Adapt ambient operating temperature ranging from -29℃ to 80℃; fit inland desert sandstorm erosion, alkaline dust corrosion, 24-hour high-frequency vibration onshore drilling yard environments; stable operation under 0.7MPa rated pneumatic pressure and 320kN peak reducer output torque; compatible with lithium-based butter lubricating grease and conventional pneumatic medium; applicable for Zone2 dust-hazardous onshore drawworks operation zones.

2.5 Engineer Verified Maintenance Rules & On-site Avoidance Tips

Clean NJU suction filter cartridge and grease pipeline sediment every 380 continuous lubrication hours; inspect BG-80(II) brake valve spool abrasion every 760 cyclic braking hours; calibrate YTN-60 pressure gauge reading before heavy-load hoisting operation; critical avoidance tip: do not bend finished thin-wall copper pipes forcibly during installation, which will deform pipe inner diameter and block butter grease circulating flow path.

We supply the following spare parts:

3. Verified On-site Oilfield Maintenance Cases (4 Cases)

Case 1

Location: Sulige Desert Drilling Hoisting Site; Matched Device: ZLYQC850 Planetary Drawworks Reducer; Working Load: 300kN cyclic hoisting torque; Fault Data: Mismatched partition sleeve caused gear radial runout 0.41mm, abnormal meshing noise; Repair Scheme: Install ZLYQC850-9.4A-316 partition sleeve + C850-9.4A-325 flat key; Post-repair Index: Gear runout controlled below 0.14mm, meshing noise eliminated completely; Client Feedback: Reduced gear tooth unilateral abrasion, extended gear service cycle.

Case 2

Location: Yumen Gobi Pneumatic Brake Station; Matched Device: BG-80(II) Normally Closed Brake Unit; Working Load: 0.65MPa rated pneumatic load; Fault Data: Old brake valve failed rapid closing, drawworks idle slipping risk existed; Repair Scheme: Replace original valve with standard BG-80(II) brake valve + 2-HA-2 four-way air guide valve; Post-repair Index: Brake full closing response fixed at 0.21s, zero slipping under static load; Client Feedback: Met desert dust-proof braking standard, eliminated hoisting safety risk.

Case 3

Location: Tarim Heavy-load Drilling Yard; Matched Device: AF700201-010900B3 Butter Lubrication System; Working Load: 0.5MPa grease circulating pressure; Fault Data: Scaled copper pipe interrupted grease supply, bearing dry heating phenomenon occurred; Repair Scheme: Mount ZLYQC850-5AA-201 copper pipe + NJU-250X180F oil suction filter; Post-repair Index: Grease circulation flow recovered factory standard value, bearing surface uniform grease film formed; Client Feedback: Solved high-temperature bearing dry friction fault in desert working condition.

Case 4

Location: Ningxia Onshore Comprehensive Drilling Base; Matched Device: WG00707006/00707007 Gear Case Assembly; Working Load: 280kN auxiliary transmission torque; Fault Data: Loose flange fastener caused butter grease leakage from gear case joint; Repair Scheme: Fasten matched M42X2 nut + AF500301-0600 adjusting cushion assembly; Post-repair Index: Gear case flange zero grease leakage for 42 consecutive running days; Client Feedback: Stabilized internal grease cleanliness, reduced external dust invasion.

4. User Intent Matching FAQ Table

5. Procurement Guidance & Closing Paragraph

This integrated ZLYQC850 reducer transmission parts, AF700 butter lubrication system assemblies, BG-80(II) pneumatic brake components, multi-spec pneumatic control valves and oilfield standard fastener sets comply with original drawworks OEM machining tolerance standards, attached with metallurgical material test certificates, pneumatic explosion-proof inspection reports and complete assembly installation drawings for buyer technical audit and warehouse filing. All finished components complete grease flow fatigue test, sand dust aging test and assembly concentricity detection before outbound delivery, complying with international onshore drilling hoisting machinery spare part supply standards. We support single-spec bulk procurement, full drawworks lubrication-brake overhaul kit combined matching and special-size copper pipe elbow customized processing services. Professional pneumatic-mechanical integration engineering team provides host model matching confirmation, onsite grease loop fault diagnosis and customized periodic maintenance scheme guidance for procurement managers and field maintenance technicians. Reach out to confirm field working condition matching, combined component selection and full-cycle professional technical support for your drilling drawworks spare part reserve and equipment overhaul renovation projects.