Parts for Drilling Rig ZJ50/3150D

1. Introduction & Core Purpose

This guide is exclusively tailored for the ZJ50/3150D drilling rig (nominal drilling depth up to 5000m with 114mm drill pipe, 4500m with 127mm drill pipe; max hook load 3150kN), focusing on the 105-series parts and matching components for key rig systems—including rotary table, kelly bushing, pinion shaft, and locking mechanisms. It addresses the segmented needs of two core user groups: procurement teams requiring model-accurate, standard-compliant parts to eliminate mismatch risks, ensure compatibility with the rig’s 1100kW drawworks and F-1600 mud pump configuration, and optimize sourcing efficiency; and on-site technical/maintenance personnel seeking practical troubleshooting and upkeep guidance to minimize downtime. The core purpose is to serve as a dual-reference document, integrating procurement standards and technical solutions to maintain the ZJ50/3150D’s stable, high-performance operation in deep drilling scenarios.

2. Product Overview

The listed parts are original-matched core components designed for the ZJ50/3150D deep drilling rig, covering critical functional categories: locking mechanisms (left/right lock pawl 105.06.01/105.06.02, lock pawl pins), rotary table assemblies (ring gear 105.08.40.11, table 105.08.40.02, bearing 2687/1049), kelly bushing systems (main kelly bushing 105.08.70.04, kelly bushing installation 105.54.00), pinion shaft assemblies (105.08.50.00, shaft 105.06.50.03), sealing elements (O-rings, oil seals D7-1-67), fasteners (screws GB5783-86, springs washers GB93-87), and auxiliary parts (grease fittings, dipsticks, drain plugs). All parts comply with national and industrial standards (GB, DIN) and match the rig’s key configurations—such as ZP375 rotary table (Lanzhou), SL450 swivel, and JJ315/45-K4 mast—ensuring dimensional precision, material durability, and seamless integration with the ZJ50/3150D’s heavy-duty operating parameters.

3. Functional Description

3.1 Locking & Positioning Functions

Left/right lock pawls (105.06.01/105.06.02), lock pawl pins (105.08.10-1), and handle lock pawl pins (105.06.03-1) form the core locking mechanism, ensuring stable positioning of rotary table and kelly bushing components during drilling operations. These parts resist high torque and vibration, preventing accidental disengagement that could lead to equipment damage or operational hazards.

3.2 Rotary Table & Power Transmission

Rotary table components (ring gear 105.08.40.11, table 105.08.40.02, bearing 2687/1049) and pinion shaft assemblies (105.08.50.00) transmit power to drive drill pipe rotation, matching the ZP375 rotary table’s 4 forward + 2 reverse speed settings. Bearings (GB283-64, GB286-64) reduce frictional wear during high-speed rotation, while spacers and shims ensure precise alignment of transmission parts, maintaining power transfer efficiency.

3.3 Sealing & Lubrication Auxiliary

O-rings (105.08.40.05, 105.08.50.02), oil seals (D7-1-67), and plugs (105.06.05, 105.06.07) prevent lubricant leakage and external contamination (drilling mud, dust) from entering core components. Grease fittings (GB1152-89, GB70-85) facilitate targeted lubrication, while dipsticks (105.08.30.00) and drain plugs (105.06.60.00/01) enable lubricant level monitoring and replacement, extending component service life.

3.4 Fastening & Structural Support

Fasteners—including hex socket head screws (105.06.10.00), GB5783-86 bolts, and GB93-87 spring washers—secure all components, ensuring assembly stability under the rig’s max hook load (3150kN) and high vibration. Supports (bearing support 105.08.40.04), end-plates, and retainers (sprocket retainer 105.08.14) provide structural reinforcement for rotating parts, preventing deformation during heavy-duty operation.

4. Structural Features

The ZJ50/3150D matching parts adopt a heavy-duty structural design, tailored to the rig’s deep drilling and high-load requirements. Transmission components (ring gear, pinion shaft) are crafted from high-strength alloy steel, treated with carburizing and quenching processes to enhance surface hardness (HRC 58-62) and fatigue resistance, complying with GB/T 3077-2015. Sealing elements use oil-resistant nitrile rubber or fluororubber, adapting to high-temperature (up to 120°C) and high-pressure working conditions. Fasteners feature anti-corrosion galvanization or oxide coating, suitable for outdoor and humid drilling environments. Modular design simplifies disassembly and replacement, reducing maintenance labor and downtime.

5. Application Conditions

These parts are exclusively engineered for the ZJ50/3150D drilling rig, widely used in onshore deep oil & gas drilling, geothermal drilling, and mining exploration. They perform reliably under extreme working conditions: ambient temperatures ranging from -30°C to 70°C, operating torque up to 150kN·m, high vibration (≤ 3.5mm/s), and dusty, muddy environments. The parts fully match the rig’s 5000m drilling depth and 3150kN hook load capacity, maintaining stability during continuous 24/7 operation, and are compatible with the rig’s disc-type main brake and electromagnetic auxiliary brake systems.

6. Maintenance Recommendations

6.1 Routine Inspection

Conduct daily checks of lubricant levels using dipsticks (105.08.30.00) and inspect for leakage from O-rings and oil seals. Weekly, verify lock pawl and pin tightness, retightening fasteners per GB/T 3098.1-2010 torque specifications. Monthly, inspect rotary table bearings and pinion shaft assemblies for abnormal wear or noise, and clean grease fittings to ensure unobstructed lubrication.

6.2 Regular Replacement

Replace lubricants every 1000 working hours, cleaning lubrication passages and drain plugs (105.06.60.00/01) to avoid contamination. Replace O-rings and oil seals (D7-1-67) every 1500 working hours or immediately if leakage occurs. Replace bearings (GB283-64, GB286-64) every 3000 working hours or if wear exceeds 0.03mm. Replace lock pawls and pins every 2500 working hours or if deformation or fatigue cracks are detected.

6.3 Storage & Handling

Store parts in a dry, well-ventilated warehouse, avoiding direct sunlight and humid conditions. Seal sealing elements in airtight packaging to prevent aging. Use specialized lifting equipment for heavy components (ring gear, pinion shaft assembly) to avoid impact damage. Clean all parts thoroughly to remove debris and rust before installation, and apply lubricant to rotating parts to ensure smooth operation.

Parts list

7. On-Site Fault Repair Cases

Case 1: Lock Pawl Disengagement Causing Rotary Table Jamming

Fault Phenomenon: The ZJ50/3150D rotary table stopped rotating, with abnormal noise from the locking mechanism. Diagnosis: Inspection found the right lock pawl (105.06.02) was worn, and the lock pawl pin (105.08.10-1) was loose, leading to disengagement and jamming. Repair: Replaced the lock pawl and pin with original-matched parts, tightened fasteners to 55-60N·m, and adjusted the locking clearance. Result: Rotary table rotation restored, no further jamming, and locking mechanism stability ensured.

Case 2: Lubricant Leakage from Pinion Shaft Oil Seal Damage

Fault Phenomenon: Lubricant leakage was observed around the pinion shaft assembly (105.08.50.00), with lubricant levels dropping rapidly. Diagnosis: The oil seal (D7-1-67) was damaged due to long-term friction, losing sealing performance. Repair: Replaced the oil seal, cleaned the pinion shaft surface, and refilled with ISO VG 100 extreme pressure lubricant. Result: Leakage ceased, lubricant levels stabilized, and pinion shaft rotation remained smooth.

Case 3: Bearing Wear Leading to Rotary Table Vibration

Fault Phenomenon: The rotary table exhibited excessive vibration during operation, with increased noise from the bearing area. Diagnosis: Disassembly revealed severe wear on bearing GB283-64 (32630), with wear exceeding 0.04mm, causing misalignment. Repair: Replaced the bearing, adjusted spacing with shims (105.08.50.05), and re-lubricated the assembly. Result: Vibration and noise reduced to normal levels, rotary table operation stabilized.

Case 4: Fastener Loosening Causing Kelly Bushing Misalignment

Fault Phenomenon: The kelly bushing (105.54.01) was misaligned, leading to uneven drill pipe rotation and potential pipe sticking. Diagnosis: GB5783-86 (M16X35) bolts securing the kelly bushing installation (105.54.00) were loose, with spring washers (GB93-87(16)) fatigued.Repair: Replaced bolts and washers, tightened evenly to 60-65N·m, and realigned the kelly bushing. Result: Kelly bushing alignment restored, drill pipe rotation smooth, and drilling efficiency maintained.

8. FAQ

9. Procurement Reference & Call to Action

9.1 Procurement Reference Standards

When purchasing parts for the ZJ50/3150D drilling rig, strictly match original part numbers and specifications to ensure compatibility with the rig’s ZP375 rotary table, SL450 swivel, and F-1600 mud pump configuration. Prioritize parts complying with GB (GB5783-86, GB93-87) and industrial standards, accompanied by formal quality inspection certificates. Verify material performance (e.g., alloy steel for transmission parts, oil-resistant rubber for seals) and dimensional tolerance (±0.02mm for precision components) to avoid mismatch-related equipment failure or safety hazards. For critical parts like pinion shaft assemblies, confirm compatibility with the rig’s 1100kW drawworks power output.

9.2 Call to Action

We supply full-series original-matched, high-quality parts for the ZJ50/3150D drilling rig, covering all components listed—including rotary table, kelly bushing, and pinion shaft parts.  We provide professional technical support for procurement selection, fault diagnosis, and maintenance guidance, tailored to your on-site operational needs. Contact us now for detailed quotes and customized sourcing solutions to keep your ZJ50/3150D drilling rig running stably and efficiently.

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Emeil: [email protected]   whatsapp: +86 15275658619

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