Introduction
This curated spare parts lineup is precision-engineered exclusively for the SOCAR ZJ-40CZ mobile drilling rig, a versatile land-based drilling unit designed for exploration drilling, workover operations, and shallow-to-medium depth well construction. Target users include rig maintenance technicians, drilling operations supervisors, procurement specialists for oilfield service companies, and rig asset managers who prioritize zero unplanned downtime, strict compliance with API Spec 7K, API Spec 8C, and GOST industrial standards, and seamless preventive maintenance execution.
Key Operational Pain Points Addressed
- Costly Drilling Downtime: A single SOCAR ZJ-40CZ rig shutdown caused by failed cardan shafts, broken drawworks chains, or worn brake pads can halt drilling for 4–8 hours, resulting in direct daily losses exceeding $35,000 for active well sites, plus delays to project timelines and contractual obligations.
- Drive System Instability: Worn universal joints, damaged bearings, or faulty gear reducers cause uneven power transmission, excessive vibration, and premature wear to adjacent components, increasing long-term repair costs by 40%.
- Safety & Compliance Risks: Degraded brake pads, leaking cylinder seals, and faulty air springs compromise rig braking and lifting safety, violating API and GOST safety standards and creating hazardous working conditions for rig crews.
- Contamination & Fluid Loss: Clogged oil separators and worn shaft seals lead to hydraulic fluid contamination, oil leaks, and reduced system efficiency, risking damage to hydraulic pumps and gearboxes.
Scene Anchoring & Core Value Proposition
These SOCAR ZJ-40CZ drilling rig spare parts are purpose-built for the harsh, remote land drilling environments where the rig operates, including extreme temperature fluctuations (-25°F to 135°F), high torque loads, continuous vibration, and exposure to dust, mud, and debris. The core value lies in direct drop-in fitment, eliminating custom modifications, cutting repair time by 65% compared to generic alternatives, and ensuring reliable power transmission, braking, and hydraulic performance to keep drilling operations on schedule.
Functional Description
These components support the core operational systems of the SOCAR ZJ-40CZ drilling rig, with key functions including:
- Power Transmission: Cardan shafts and U-joints transfer torque from the power unit to drawworks and rotor systems, ensuring smooth power delivery under heavy loads.
- Hoist & Rotor Drive: Heavy-duty multi-row chains (140 series) drive drawworks and rotor assemblies, with precise pitch and link count to maintain speed and torque consistency.
- Braking & Safety: Disc brake pads deliver reliable stopping power for drawworks and lifting systems; elevator cylinder assemblies support safe tubular handling.
- Hydraulic & Lubrication Control: Cylinder seal kits prevent hydraulic leaks; oil separators maintain clean lubrication fluid with 0.01 micron filtration accuracy.
- Gearbox Support: Precision bearings and shaft seals protect conical reducers and gearboxes, reducing friction and preventing oil contamination.
Structural & Material Characteristics
- Drive Components: Hardened alloy steel cardan shafts and U-joints (SWC180 series) with high torque capacity; heat-treated 140 series chains with 44.45mm pitch for wear resistance.
- Brake Components: SKD-series brake pads with high-friction composite material, rated for 8,000+ braking cycles; API 8C compliant cylinder seals for leak-free operation.
- Bearing & Seal Components: GOST-standard precision bearings (7624, 3624, 3620) with low friction; TC-type spring seals with oil-resistant rubber for long service life.
- Filtration Components: Quincy oil separators with 0.01 micron filtration efficiency, designed to remove contaminants and extend hydraulic fluid life by 30%.
Applicable Operating Conditions
- Applicable Equipment: SOCAR ZJ-40CZ Mobile Drilling Rig
- Temperature Range: -25°F (-31°C) to 135°F (57°C)
- Application Scenarios: Land exploration drilling, workover operations, shallow-medium well construction, remote oilfield drilling sites
- Standards Compliance: API Spec 7K, API Spec 8C, GOST 31592-2012, GOST 27365-87, ISO 6194-1:2007
Maintenance & Service Recommendations
- Inspect drawworks chains, cardan shafts, and U-joints every 200 drilling hours, checking for wear, elongation, or loose fasteners.
- Replace brake pads when friction material thickness reaches 3mm to maintain full braking capacity and compliance with safety standards.
- Change oil separators every 1,500 operating hours to ensure optimal filtration and prevent hydraulic system contamination.
- Lubricate cardan shafts, bearings, and U-joints every 50 operating hours with high-temperature lithium grease to reduce friction.
- Inspect shaft seals and cylinder seal kits quarterly, replacing worn seals immediately to prevent fluid leaks.
- Store spare parts in a dry, dust-free environment to prevent seal hardening, bearing corrosion, and chain degradation.
We supply the following spare parts:
| Line item number | Description | UOM | Internal Note |
| 1 | Cardan shaft for JZ-40CZ mobile drilling rig p/n: SWC180-2560 | set | Cardan shaft for JZ-40CZ mobile drilling rig p/n: SWC180-2560 Standard: API Spec 7K |
| 2 | Rubber Air Spring for JZ-40CZ Mobile Drill Rig p/n: 566-28-3-547 | pcs. | Rubber Air Spring for JZ-40CZ Mobile Drill Rig p/n: 566-28-3-547 Standard: API Spec 7K |
| 3 | U-joint cardan shaft for JZ-40CZ mobile drilll rig p/n: SWC180; 75×152,5 | set | U-joint cardan shaft for JZ-40CZ mobile drilll rig p/n: SWC180; 75×152,5 Standard: API Spec 7K |
| 4 | Chain 140 (1¾”)-3-136 for drawworks chain case | set | Chain 140 (1¾”)-3-136 for drawworks chain case.Chain pitch: 44.45 mmNumber of chain links: 136 pcs. The number of rows of the chain: 3 rowsStandard: API Spec 7K |
| 5 | Chain 140-3×104-44,45 for ZJ-40CZ drawworks | set | Chain 140-3×104-44,45 for ZJ-40CZ drawworks Chain pitch: 44.45 mm Number of chain links: 104 pcs. The number of rows of the chain: 3 rows Standard: API Spec 7K |
| 6 | Chain 140-2×88-44,45 for ZJ-40CZ rotor | set | Chain 140-2×88-44,45 for ZJ-40CZ rotorChain pitch: 44.45 mmNumber of chain links: 88 pcs.The number of rows of the chain: 2 rowsStandard: API Spec 7K |
| 7 | Chain 140-2×164-44,45 for ZJ-40CZ rotor | set | Chain 140-2×164-44,45 for ZJ-40CZ rotor Chain pitch: 44.45 mmNumber of chain links: 164 pcs. The number of rows of the chain: 2 rowStandard: API Spec 7K |
| 8 | Oil separator 1627410122 Quincy | set | Oil separator (oil separator filter element) 1627410122 QuincyFilter accuracy: 0.01 micronHeight: 232 mmInner diameter: 100 mmOuter diameter: 173 mmDiameter of the upper flange: 200 mmThe filter is not threaded.Standard: ISO/TC16949; ISO/TC 70/SC 7 |
| 9 | Arm Cylinders Seal Kit (DQ-250Z) p/n1300194061 | set | Arm cylinders seal kit (DQ-250Z) p/n1300194061 Standard: API SPEC 8C |
| 10 | Disc Brake Mechanism Brake Pad SKD-65 P/N 1300016714 | pcs. | Disc Brake Mechanism Brake Pad (DQ-225, DQ-250) Modeli: SKD-65 p/n: 1300016714 Standard: API SPEC 8C |
| 11 | Disc Brake Mechanism Brake Pad SKD-80 P/N 1300016715 | pcs. | Disc Brake Mechanism Brake Pad (DQ-450DBZ) Modeli: SKD-80 p/n: 1300016715 Standard: API SPEC 8C |
| 12 | LBU-750D (NBO-160D) drawworks conical reducer p/n:44067.90.100РЭ | set | LBU-750D (NBO-160D) drawworks conical reducer p/n:44067.90.100РЭ Standard: GOST 31592-2012 |
| 13 | Bearing 7624 (for conical reducer) | pcs. | Bearing 7624 (for conical reducer) Model: 7624 Standard: GOST 27365-87 |
| 14 | Bearing 3624 (for conical reducer) | pcs. | Bearing 3624 (for conical reducer) Model: 3624 Standard: GOST 5721-75 |
| 15 | Bearing 3620 (for BU-75 gear box and chain reducer) | pcs. | Bearing 3620 (for BU-75 gear box and chain reducer) Model: 3620 Standard: GOST 5721-75 |
| 16 | Bearing 3618 (for BU-75 gear box) | pcs. | Bearing 3618 (for BU-75 gear box and chain reducer) Model 3618 Standard: GOST 520-2011 (5721-75 |
| 17 | Bearing 7214 (for BU-75 gear box) | pcs. | Bearing 7214 (for BU-75 gear box and chain reducer) Model 7214 Standard: GOST 520-2011. |
| 18 | Bearing 6010 (LW 450×1000 800 r/min. centrifuge) | pcs. | Bearing 6010 (for BU-75 gear box and chain reducer) Model:6010 Standard: GOST 8338. |
| 19 | Spring seal TC95x115x13 (for BU-75 gear box and chain reducer) | pcs. | Spring seal Model: TC95x115x13 Standard:GOST 32415-2013 |
| 20 | Seal TC80x100x12 (for BU-75 gear box) | pcs. | Spring seal Model: TC80x100x12 Standard: ISO 6194-1:2007 |
| 21 | Cylinder assembly (elevator) 30119592 | set | Cylinder assembly (elevator) TDS-11SA p/n: 30119592 Standard: API SPEC 8C |
On-Site Fault Repair Cases (SOCAR ZJ-40CZ Rig)
Case 1: Drawworks Chain Failure
The SOCAR ZJ-40CZ rig experienced a drawworks shutdown due to a broken 140-3×104 chain, caused by excessive wear and elongation. Installing a new OEM-spec 3-row chain restored power transmission, and drilling operations resumed within 3 hours.
Case 2: Brake Pad Degradation Causing Braking Issues
The rig’s disc brake system failed to hold load during tubular lifting, traced to worn SKD-65 brake pads with minimal friction material remaining. Replacing the worn pads with new 1300016714 model pads restored full braking safety and functionality.
Case 3: Hydraulic Cylinder Leak from Worn Seal Kit
A severe hydraulic leak occurred at the elevator cylinder assembly, halting lifting operations. Inspection revealed a deteriorated DQ-250Z seal kit (p/n 1300194061). Installing a new seal kit eliminated leaks, restoring cylinder performance and rig safety.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts fully compatible with the SOCAR ZJ-40CZ drilling rig? | Yes, all components are engineered to match the OEM specifications of the SOCAR ZJ-40CZ rig, with direct drop-in fitment for all drive, brake, and hydraulic systems, no modifications required. |
| Do these parts meet API and GOST industry standards? | Absolutely, all components comply with API Spec 7K, API Spec 8C, and relevant GOST/ISO standards, ensuring full adherence to global drilling rig safety and performance requirements. |
| What is the service life of these SOCAR ZJ-40CZ spare parts? | Under proper maintenance, chains and bearings last 8,000–12,000 drilling hours; brake pads last 3,000–5,000 hours; seals and oil separators last 1,500–2,000 hours in standard land drilling conditions. |
Procurement Guidance & Call to Action
This SOCAR ZJ-40CZ drilling rig spare parts list is a definitive reference for preventive maintenance planning, emergency field repairs, and rig inventory stocking. Every component is built to match OEM quality, load capacity, and durability, ensuring reliable rig operation, minimal downtime, and full compliance with industry safety and performance standards.
Proactively stock these critical SOCAR ZJ-40CZ parts to avoid costly drilling shutdowns, resolve drive, brake, and hydraulic failures quickly, and extend the operational life of your drilling rig. When purchasing, verify the listed part numbers and standard specifications to ensure accurate fitment and optimal performance under heavy-duty land drilling conditions. Investing in these high-quality, dedicated spare parts will lower long-term maintenance costs, improve drilling efficiency, and keep your SOCAR ZJ-40CZ rig operating at peak performance for all exploration and workover tasks.
