1. Product Overview & Core Purpose

Target Equipment Compatibility: This full line of spare parts is exclusively engineered for the JC50DB Honghua drawworks (winch), a heavy-duty core component widely deployed in land-based oil and gas drilling rigs, workover rigs, and geothermal drilling operations. These parts are precision-machined to match original equipment manufacturer (OEM) dimensional tolerances, material specifications, and performance benchmarks, eliminating compatibility errors and assembly failures.

2. Key Product Introduction

This curated lot of JC50DB Honghua drawworks spare parts encompasses79 critical mechanical, hydraulic, electrical, and sealing components spanning rolling bearings, sealing kits, hydraulic valves, pressure sensors, filters, actuators, and fasteners. Every component is manufactured in strict accordance with international and Chinese national standards (GB/T series) and industry-specific drilling equipment norms, ensuring seamless interchangeability with OEM parts. Built to withstand harsh oilfield conditions, these parts deliver consistent performance, extended service life, and reduced total cost of ownership for rig operators.

3. Functional Advantages & Value Proposition

• Zero Compatibility Risk: Precision-engineered to OEM specs for the JC50DB winch, ensuring direct bolt-on installation without modification, cutting installation time by up to 40% compared to generic aftermarket parts.
• Enhanced Operational Safety: Explosion-proof electrical components, high-pressure rated hydraulic valves, and heavy-duty sealing parts meet ATEX and oilfield safety standards, mitigating fire, leakage, and equipment failure hazards in hazardous drilling environments.

4. Structural & Material Features

Each spare part is designed with oilfield durability as the core priority, featuring industry-leading structural and material attributes:

• Mechanical Components: Load-bearing parts (rollers, pins, oscillating bearings) use hardened alloy steel with precision heat treatment, delivering a hardness rating of HRC 58-62 and superior fatigue resistance for heavy-duty winch lifting operations.
• Sealing Systems: O-rings, wiper seals, and wear rings utilize high-performance nitrile rubber (NBR) and polyurethane (PU) compounds, resisting oil, hydraulic fluid, and dust contamination to prevent leakage and extend cylinder life.

5. Applicable Operating Conditions

These JC50DB Honghua drawworks spare parts are engineered to perform reliably in the most demanding drilling scenarios, including:

• Land-based oil and gas exploration drilling rigs (5000-meter rated depth)
• Workover and well servicing rigs for mature oilfields
• Geothermal drilling and directional drilling operations
• Onshore rigs in extreme climates: arctic cold, desert heat, and high-dust environments
• Rig operations with continuous cyclic loading and high-frequency winch usage

We supply the following spare parts:

Items	Code of article	Designation	Reference *	UM
1	413662028	ROLLER	DSQ-01.03.00	Piece
2	49101315090	Bearing 6206	GB/T 276-94	Piece
3	413662029	Retainer 62	GB/T 893.1-86	Piece
4	413662033	Grease nipple M10×1	GB1152-89	Piece
5	413201039	Spherical rubber joint DN80	KXT-1	Piece
6	413662235	Fine oil filter	CLYX-160×50	Piece
7	573045004	Double scale shockproof pressure gauge 0-1.6MPa	YN60	Piece
8	413201040	Oil pump mounting block	JC101.06.02	Piece
9	413662237	Primary oil filter	CLYX-160×30	Piece
10	413776005	Stainless steel ball valve Rc1 1/2?	Q11F-16	Piece
11	413662246	Ex-proof electric gear oil pump	KCB83.8	Piece
12	413201041	Check valve NPT1″	CIT-08	Piece
13	413662238	Ex-proof pressure switch 0.7-10bar	SA1111E-S5-K2	Piece
14	413776022	Toggle Valve FP-L6	QY34	Piece
15	413201042	Hydraulic cylinder. safety caliper	BG75B	Piece
16	413201043	Wiper seal. d70	BG75B-2	Piece
17	413201044	Wear ring 10×2.5×226.5	BG75B-4	Piece
18	413201045	O-ring. 71×3.55	BG75B-8	Piece
19	413201046	Seal ring. CKS0700	BG75B-9	Piece
20	413201047	O-ring. 160X5.3	BG75B-7	Piece
21	413201048	Wear ring. 10X2.5X462	BG75B-11	Piece
22	413201049	O-ring, 140X3.55	BG75B-12	Piece
23	413201050	Dish spring	BG75B-14	Piece
24	413201051	Grease fitting 45°. M10x1	BG75B-20	Piece
25	413201052	Grease fitting, M10x1	BG75B-26	Piece
26	413201053	Oscillating bearing	BG75B-25	Piece
27	413662257	Hydraulic cylinder. caliper service	KG80	Piece
28	413201054	Wiper seal (dust ring). d70	KG80-2	Piece
29	413201055	Wear ring. 10×2.5×226.5	KG80-8	Piece
30	413201056	Spring	KG80-9	Piece
31	413201057	O-ring, 132×3.55	KG80-14	Piece
32	413201058	Wear ring. 10X2.5X462	KG80-15	Piece
33	413201059	Retainer. CKW1400	KG80-16	Piece
34	413201060	Grease fitting. 45°. M10x1	KG80-20	Piece
35	413201061	Grease fitting. M10x1	KG80-23	Piece
36	413201062	Oscillating bearing	KG80-22	Piece
37	413201063	Trunnion	PS80-01	Piece
38	413662253	PIN 1	PS80-02	Piece
39	413662254	PIN 2	PS80-03	Piece
40	413662255	PIN 3	PS80-04	Piece
41	412602526	Retainer 30 (Retainer ring 28)	GB894.1-86	Piece
42	412602526	Retainer 40 (Retainer ring 28)	GB894.1-86	Piece
43	573045675	Temperature sensor	SBWZ-Pt100-02 -K22d-ø8.0-3 (-25~100)	Piece
44	573045674	Level controller. EX-PRF	KYB1901M1F2Z1CI	Piece
45	413201064	Air filter	QUQ3-10X4.0	Piece
46	413664413	Ball valve. DN=6	Q11F-25	Piece
47	413664413	Ball valve. DN=15	Q11F-25	Piece
48	413201065	3-way ball valve	KHN3K-G1-T-2233	Piece
49	416187530	Suction filter	ISV40-160X100M	Piece
50	573045627	Proportional relief valve. EX-PRF	RZMA-A-030/180-PA-GK/7	Piece
51	573045634	Throttle and check valve (cracking pressure 4.5bar)	DRVP20-1-10	Piece
52	413201066	Cooler	GLC3-4	Piece
53	413201067	Check valve (cracking pressure 0.5bar)	S20G1	Piece
54	413201068	Manual shut-off valve	D71X-16 (DN=50)	Piece
55	573045706	Oil suction filter	TF-400X100F-Y	Piece
56	579901176	Engine oil pump set	160YCY14-1B	Piece
57	573045628	Check valve	S6A1.0/2	Piece
58	573045723	Pressure transducer with 3 meter cable	KYB18G09M1P1C2I, 0~35MPa	Piece
59	573045619	Accumulator	NXQ1-LO.63/31.5-LH	Piece
60	413662477	HP filter	ZU-H250x20BDP	Piece
61	413201069	Pressure switch (contactor close pressure 0.4MPa)	PCA2MA-1.6/10bar-1/4”- 18NPT-1/2”-14NPT	Piece
62	573045628	Check valve	S6A12	Piece
63	413201070	Ball valve	100018	Piece
64	573048104	Pressure test connector	PT-7	Piece
65	573045658	Pressure gauge	YN60-III	Piece
66	413201071	Directional valve set. EX-PRF	PSL-6-5HH5	Piece
67	413201072	Cartridge relief valve	DBDH20K10/20	Piece
68	573045658	Shock-proof pressure gauge	YN60-??0?16MPa?	Piece
69	413201073	Self-sealing quick release coupling	H6-62.63.65M.66M	Piece
70	413201074	Self-sealing quick release coupling	H8-62.63.65M.66M	Piece
71	413201075	Quick release coupling	H6-63.66M	Piece
72	413201076	Quick release coupling	H6-62.65M	Piece
73	413201077	Self-sealing quick release coupling	H2-63.66M	Piece
74	413201078	Self-sealing quick release coupling	H2-62.63.65M.66M	Piece
75	573045635	Oil suction filter	TFX-63×100	Piece
76	413201079	Explosion-proof motor, 3kW	YB100L2-4 B35	Piece
77	573048301	Axial plunger pump	PHP1050R2	Piece
78	413201080	Oil return filter	RFA-63x10L-Y	Piece
79	573045638	Cartridge check valve	YC108-1-B-0-0.34	Piece
80	413201081	HP ball valve for hydraulic	YJZQ-J10B	Piece
81	413201082	EX-PRF pressure switch (contactor close pressure 6.5MPa)	PCA2MA-20/100bar-1/4”- 18NPT (female)-1/2”-14NPT (female)	Piece
82	413662042	3-p 4-w solenoid directional valve	DHA-0631/2/M/7-24DC	Piece
83	413662095	Directional spool Valve (Solenoid Valve)	3WH6A53	Piece
84	616010221	Proportional magnify plate (Amplifier Card)+Card Holder Weidmuller	E-ME-AC-01F + SKHD32LP5 / 16RH2	Piece
85	573045648	Proportional pressure reducing valve. EX-PRF	RZGA-A-033/80/PA-GK/7	Piece
86	573045011	Pneumatic control directional valve	4WP6D60/N	Piece
87	573045672	Solenoid directional air valve. EX-PRF	MFH-3-1/4-24VDC-EEX-M	Piece
88	573045645	Pressure transducer with 3 meters cable	KYB18G09M1P1C2i,0~10MPa	Piece
89	413201083	Pneumatic control directional valve	VO/L-3-1/4	Piece
90	413201085	Insert type one way valve	TC108-1-8B-0-0.34	Piece
91	573045639	Overflow valve	DBDS10K1X/100	Piece
92	573048144	Pressure test joint	PT-3	Piece
93	573045722	Pressure test hose	HFH2-P1-3-P-2.5	Piece
94	573045658	Pressure Gauge	YN60-? (0-16Mpa)	Piece
95	413201084	High pressure oil filter	ZU-H25x10BDP	Piece
96	573045619	Accumulator	NXQ1-F6.3-20-H	Piece
97	413662096	Relay Valve	LT09HG-1X/125/02M	Piece
98	413662094	Directional Spool Valve (solenoid valve)	3WH6B53	Piece
99	413662326	Self seal quick connector	H3-62.63.65.66M	Piece

6. Field Failure Repair Cases (Real-World Drilling Scenarios)

Case 1: Hydraulic Caliper Cylinder Leakage

Scenario: A JC50DB winch on a 5000m drilling rig experienced severe hydraulic fluid leakage from the safety caliper cylinder (BG75B), causing inconsistent brake tension and rig shutdown risks.
Solution: Replacement of worn wiper seals (d70), O-rings (71×3.55), and wear rings (BG75B-4) from this spare parts lot resolved the leakage, restoring brake functionality and eliminating unplanned downtime.
Outcome: Rig resumed operations within 2 hours, avoiding costly drilling delays.

Case 2: Clogged Oil Filter Causing Pressure Loss

Scenario: A workover rig’s JC50DB winch suffered hydraulic pressure loss due to a clogged fine oil filter (CLYX-160×50), leading to slow winch operation and reduced lifting capacity.
Solution: Replacement of the clogged filter with a new spare component restored proper oil flow and system pressure, returning winch speed to OEM specifications.
Outcome: Routine maintenance completed without extended downtime, preventing potential pump damage.

Case 3: Faulty Pressure Switch Disabling Winch Controls

Scenario: An explosion-proof pressure switch (0.7-10bar) failed on a JC50DB winch, triggering automatic safety shutdowns and disrupting directional drilling operations.
Solution: Installation of a replacement pressure switch from this parts lot restored pressure monitoring and control, reactivating full winch functionality.
Outcome: Drilling operations resumed safely, complying with rig safety protocols.

7. Frequently Asked Questions (FAQ)

Question	Answer
Are these parts 100% compatible with the JC50DB Honghua drawworks only?	Yes, these spare parts are precision-designed exclusively for the JC50DB Honghua winch to match OEM dimensions, materials, and performance standards, ensuring perfect fit and functionality.
What standards do these components comply with?	Parts adhere to GB/T national standards, API oilfield specifications, and IECEx explosion-proof standards, with full traceability to meet global drilling equipment quality requirements.
How do I identify the correct replacement part for my winch?	Cross-reference your existing part’s unique code (e.g., 413662028, 49101315090) and reference number (e.g., DSQ-01.03.00) with the detailed parts list to select the exact matching component.

8. Procurement Guidance & Call to Action

For drilling operators and maintenance teams responsible for JC50DB Honghua drawworks upkeep, these premium spare parts serve as both a rigorous procurement benchmark and a definitive technical solution for resolving mechanical, hydraulic, and electrical failures. Each component is vetted for quality, durability, and performance to keep your drilling operations efficient, safe, and compliant with industry standards.

Secure your inventory of JC50DB Honghua drawworks spare parts today to streamline preventive maintenance, reduce emergency repair delays, and protect your rig’s operational uptime. Submit your part-specific procurement inquiry with the corresponding item codes and quantities to access customized pricing, technical support, and component verification services tailored to your drilling rig maintenance needs.