Product Introduction

This comprehensive parts lineup covers every critical wear and functional component for the JC50D02 drawworks and PSZ75B disc brake, including drive chains, gaskets, brake pads, hydraulic cylinders, pneumatic valves, sealing rings, fasteners, and specialty pump/valve assemblies. All parts are manufactured to match the original equipment’s material specifications, heat treatment protocols, and dimensional standards, eliminating the need for custom modifications during installation. Each part is labeled with its unique OEM part number for easy cross-referencing, inventory tracking, and quick identification during maintenance, aligning with global oilfield drilling equipment supply standards.

Functional Specifications

• Drive & Transmission Parts: High-tensile roller chains (08B-2, 24S-4, 32S-3) deliver stable torque transfer for drawworks lifting operations, with a load capacity rated for 50,000+ operating cycles under continuous use.
• Brake System Components: PSZ75B brake pads, caliper cylinders, and pivot pins provide reliable, friction-stable braking performance, meeting API drilling safety standards for emergency and routine braking.
• Hydraulic & Pneumatic Valves: Specialty control valves (overflow, quick-release, proportional pilot) regulate fluid and air pressure with zero leakage, supporting precise drawworks speed and brake actuation control.
• Sealing & Fastening Parts: O-rings, dust-proof rings, gaskets, and precision fasteners prevent fluid/air leakage and component loosening, even in high-vibration, high-dust drilling environments.
• Specialty Assemblies: Gear oil pumps, plunger pumps, and clutch assemblies support lubrication, hydraulic power, and power transmission for uninterrupted drawworks operation.

Structural & Material Advantages

• Precision CNC-machined surfaces for 100% drop-in fitment, reducing installation time and eliminating alignment errors common with generic aftermarket parts.
• High-grade alloy steel for load-bearing components (brake pins, shafts, chain rollers) and heat-treated friction materials for brake pads, resisting abrasion, fatigue, and corrosion.
• Industrial-grade rubber and polymer sealing components (O-rings, guide bands) that maintain elasticity and sealing performance across extreme temperature ranges (-40°F to 220°F).
• Standardized modular design for easy replacement of individual parts, avoiding full assembly replacements and lowering long-term maintenance costs.

Applicable Operating Conditions

These spare parts are optimized for heavy-duty onshore and offshore drilling rigs equipped with JC50D02 drawworks and PSZ75B disc brakes, performing reliably in extreme drilling environments: high-dust land drilling sites, corrosive offshore marine atmospheres, high-vibration rig operations, and extreme temperature fluctuations. Suitable for continuous 24/7 drilling operations, intermittent project-based drilling, and both routine maintenance and emergency field repair scenarios, complying with API and national drilling equipment safety standards.

Maintenance & Care Recommendations

• Inspect brake pads, chains, and sealing rings every 200 operating hours for wear, cracking, or deformation; replace worn parts before failure to avoid downtime.
• Lubricate chain rollers, pivot pins, and moving brake components with API-approved drawworks lubricant to reduce friction and extend part life by 40%.
• Store gaskets, seals, and rubber components in a cool, dry, dark location to prevent material degradation; avoid exposure to oil, chemicals, and direct sunlight.
• Torque all fasteners (bolts, screws, circlips) to OEM-specified torque values during installation to prevent loosening under high vibration.
• Flush hydraulic and pneumatic systems quarterly to remove contaminants, protecting valves, cylinders, and pumps from premature wear.

We supply the following spare parts:

JC50D02 drawworks parts list

Draw Works		SERIAL NUMBER:  07043
DW:JC50D02  ,  DISC BRAKE: PSZ75B
Draw works MANUFACTUR: Zhongyuan Drill & production Plant of ZDPE
Item	Unit	Part no	Description
1	EA	GB1243.1-83	Chain Roller 08B-2*140
2	EA	GB3638-83 (24S-4*134)	Chain Roller 24S-4*134
3	EA	GB3638-83 (32S-3*208)	Chain Roller 32S-3*208
4	EA	XL-15(G3/4/RC1/2)	One-way air guide faucet G3/4/RC1/2
5	SET	JC50D01-03.30	Gasketδ1
6	SET	JC50D01-03.31	Gasketδ0.5
7	SET	JC50D01-03.32	Gasketδ0.25
8	SET	JC50D01-04.36.02	Gasketδ0.25
9	SET	JC50D01-04.36.03	Gasketδ1
10	EA	P-B63B	P-B63B Overflow valve
11	EA	GB1243.1-83(08B-2×140)	Liner roller chain 08B-2×140
12	EA	CB-100	CB-100 Gear oil pump(With installation base)
13	EA	PSZ75B-2-06.0	Emergency caliper cylinder assembly
14	EA	PSZ75A-2-01	Break pad
15	EA	QY434(FP-L8)	Over wind valve for saver FP-L8
16	EA	GB882-86(B16x50-45)	Pin shaft B type 16×50
17	EA	GB/T91-2000(4×24-Q195)	Cotter pin 4×24
18	EA	QY62	Three-position gas cylinder
19	EA	JC50D01-06.05.03	Slice of lock shift
20	EA	QF527(φ50×17)	Dual-action gas cylinderφ50×17
21	EA	GB882-86(B16x40-45)	Pin shaft B type 16×40
22	EA	FB09G	Sleeve φ35×φ39×39
23	EA	PSZ75B-2-16	Pin, break pad
24	EA	FB09G	Sleeve φ35×φ39×68
25	EA	GB819-85	Slotted countersunk head screw M6x12
26	EA	PSZ75B-2-08	Pin, cylinder
27	EA	FB09G	Sleeve φ35×φ39×44
28	EA	GB894.2-86	Circlip for shaft 35
29	EA	FB09G	Sleeve φ45×φ50×64
30	EA	FB09G	Sleeve φ45×φ50×41.5
31	EA	PSZ75B-2-11	Pin, Caliper pivot
32	EA	GB5782-86	Hexagon head bolt M10×15
33	EA	GB894.2-86	Circlip for shaft 85
34	EA	PSZ75A-2-01	Break pad
35	EA	FB09G	Sleeve φ35×φ39×39
36	EA	PSZ75B-2-16	Pin, break pad
37	EA	FB09G	Sleeve φ35×φ39×68
38	EA	PSZ75B-3-05	Pin, cylinder
39	EA	PSZ75A-3-04	Adjusting screw
40	EA	FB09G	Sleeve φ35×φ39×44
41	EA	FB09G	Sleeve φ45×φ50×64
42	EA	PSZ75B-3-02.00	Service caliper cylinder assembly
43	EA	FB09G	Sleeve φ45×φ50×41.5
44	EA	PSZ75B-2-11	Pin, caliper pivot
45	EA	PSZ75A-3-03	Spring
46	EA	GB894.2-86	Circlip for shaft 85
47	EA	GB894.2-86	Circlip for shaft 35
48	EA	A5 8008 N3587	A5 Dust-proof ring
49	EA	FM3020 W5140	Guide band L=255
50	EA	BA 8007 00030	BA sealing ring
51	EA	GB3452.1-82	“O” sealing ring 118×2.65
52	EA	FM3020 W5140	Guide band L=380
53	EA	C2 C025 N3584	C2 Sealing ring
54	EA	FB09G	Axle sleeve Φ35xΦ39×49
55	EA	115.105.00	LT600/125 Clutch
56	EA	KPJ-L15(M33x1.5/M22x1.5)	Fast relieve valve M33x1.5/M22x1.5
57	EA	KPJ-L10(M20×1.5-M16x1.5)	Fast release valve(M20×1.5-M16x1.5)
58	EA	QY411(TJQ-L15)	Pressure control relay valve TJQ-L15
59	EA	QY434(FP-L8)	Over wind valve for saver FP-L8
60	EA	23QK-L8	Two-way three-position air control valve
61	EA	T03-01.00	Discharge filter cleaner
62	EA	T03-02.00	Suction filter cleaner
63	EA	4WEH25G6XG/GDBG24ETP0.45	Flameproof electro hydraulic valve
64	EA	DV20-1-10/	Throttle valve
65	EA	DBDS10K10/20	Straight overflow valve
66	EA	ZU-H25×10BDP	High pressure filter
67	EA	M-SR10KE05-1X	One way valve
68	EA	A10VS010DR1S2R-PPAN00	Plunger pump
69	EA	DRE6-10/100MG24 K4M	Proportion of the pilot valve
70	EA	DG17V-3-2N-6	Parking breaking valve
71	EA	Z2FS6-30/S2	Throttle valve

On-Site Fault Repair Case Studies

Case 1: JC50D02 Drawworks Brake Pad Failure

An onshore drilling rig experienced inconsistent braking and squealing during lifting operations due to worn PSZ75B brake pads. Replacing the worn pads with OEM-spec PSZ75A-2-01 brake pads restored full braking friction, eliminated safety risks, and resumed drilling in 3 hours.

Case 2: PSZ75B Disc Brake Caliper Cylinder Leakage

A drilling crew reported hydraulic fluid leakage from the service caliper cylinder, causing reduced brake pressure. Installing a new PSZ75B-3-02.00 caliper cylinder assembly and replacement BA sealing rings fixed the leakage, restoring full brake actuation pressure and compliance with rig safety protocols.

Case 3: JC50D02 Drawworks Roller Chain Breakage

Mid-drilling operation, a 08B-2 roller chain snapped, halting drawworks lifting. Fitting a new GB1243.1-83 standard roller chain resolved the issue, with the high-tensile replacement chain preventing future breakage during heavy-load lifting.

Frequently Asked Questions (FAQ)

Question	Answer
Are these parts fully compatible with serial number 07043 JC50D02 drawworks?	Yes, all parts are designed to match the exact specifications of the JC50D02 drawworks (serial 07043) and PSZ75B disc brake, ensuring perfect fitment and functional compatibility with no modifications needed.
What is the service life of high-wear parts like brake pads and chains?	Under normal drilling conditions, brake pads last 8,000-10,000 operating hours, and high-tensile roller chains have a service life of 12,000+ hours, depending on load and maintenance frequency.
Can these parts be used for both emergency repairs and scheduled maintenance?	Absolutely, these OEM-compatible parts are suitable for urgent field breakdown repairs and routine preventive maintenance, providing a reliable, cost-effective solution to minimize drawworks downtime.

Procurement Guidance & Closing Call to Action

This JC50D02 drawworks and PSZ75B disc brake spare parts list serves as both a standardized procurement benchmark for inventory stocking and atechnical troubleshooting reference for resolving drawworks and brake failures. Backed by strict quality testing, adherence to API drilling standards, and OEM-matched specifications, these parts deliver consistent performance, reduce long-term maintenance expenses, and mitigate the risk of costly drilling downtime.

Secure these high-quality, OEM-compatible spare parts for your JC50D02 drawworks and PSZ75B disc brake to proactively protect your drilling operations from unexpected failures, maintain equipment safety compliance, and optimize rig uptime. Cross-reference your required part numbers, confirm quantity requirements, and submit your procurement inquiry to access reliable, industry-grade components tailored to your JC50D02 drawworks system. Our specialized parts supply is built to meet the rigorous demands of oilfield drilling operations, ensuring you receive components that meet both quality and operational standards for your critical drilling machinery.