Core Application & Target User Demand
This guide covers spare parts exclusively for Lanzhou Drawworks JC70, designed to meet the high-reliability, long-service-life needs of oil and gas drilling operators. These parts ensure stable operation of the drawworks’ braking and transmission systems, solving common wear and failure pain points to minimize downtime in harsh drilling scenarios.
Spare Parts Classification & Technical Details
1. Braking System Core Components
Critical for Lanzhou JC70 drawworks’ braking performance, these parts resist high temperature and friction. They address brake failure risks from heavy loads, ensuring safe drilling operations. Suitable for continuous high-intensity braking in oilfield drilling scenarios.
No. | Part Number | Part Name | Material | Main Wear Causes | Damage Prevention Notes |
1 | 106.30.21.00 | Brake Disk | High-carbon alloy steel (heat-treated) | 1. Continuous high-temperature friction; 2. Foreign matter (drilling mud, sand) abrasion; 3. Uneven stress during emergency braking. | 1. Regularly clean surface debris; 2. Avoid frequent emergency braking; 3. Check and adjust brake clearance monthly. |
2 | - | Spacer | 45# carbon steel (precision machined) | 1. Long-term mechanical vibration; 2. Improper installation (over-tightening); 3. Corrosion from drilling fluid. | 1. Ensure torque meets GB/T 3098.1 standards during installation; 2. Apply anti-corrosion coating quarterly; 3. Replace if deformation exceeds 0.2mm. |
3 | 106.30.22.00 | Groved Drum Assembly | Low-alloy structural steel (forged, anti-rust treated) | 1. Wire rope friction wear; 2. Fatigue damage from repeated load changes; 3. Surface corrosion in humid drilling environments. | 1. Inspect groove wear weekly (replace if depth exceeds 1mm); 2. Lubricate contact surface with high-temperature grease; 3. Store in dry, dust-free space when unused. |
2. Fastening & Locking Components
Essential for securing JC70 drawworks parts, these components prevent loosening under vibration. They resolve fastening failure issues in harsh drilling conditions, ensuring overall system stability and reducing maintenance frequency.
No. | Part Number | Part Name | Material | Main Wear Causes | Damage Prevention Notes |
1 | 106.02.24.05 | Bolt | Alloy steel (10.9 grade, galvanized) | 1. Vibration-induced loosening and thread wear; 2. Over-torque during installation; 3. Corrosion from harsh oilfield media. | 1. Use torque wrench to apply specified torque; 2. Install lock washers (per GB/T 93); 3. Inspect thread integrity before reuse. |
2 | GB58-76 | Nut | Carbon steel (zinc-plated, GB standard) | 1. Thread stripping from improper torque; 2. Corrosion leading to seizing; 3. Fatigue failure from repeated load cycles. | 1. Match with corresponding bolt grade; 2. Avoid reuse after corrosion or thread damage; 3. Tighten in diagonal sequence for uniform force. |
3 | GB91-76 | Cotter Pin | Stainless steel (304, anti-corrosion) | 1. Fatigue breakage from continuous vibration; 2. Rusting in humid environments; 3. Improper bending during installation. | 1. Bend pins to 45-60 degrees after installation; 2. Replace if rust or deformation is found; 3. Ensure fit with hole size (no excessive gap). |
On-Site Fault Maintenance Case
A Lanzhou JC70 drawworks in an oilfield experienced brake failure during drilling. Inspection showed the brake disk had severe wear (depth 1.5mm) due to long-term uncleaned drilling mud and frequent emergency braking. After replacing the brake disk and following monthly clearance checks, the system operated stably for 6 months without recurrence.
FAQ
Question | Answer |
Can these parts be used for other drawworks models? | No. They are exclusively designed for Lanzhou Drawworks JC70, with precise dimensions matching the original equipment. Using for other models may cause system failure. |
How to judge if the grooved drum assembly needs replacement? | Replace if groove depth exceeds 1mm, surface has cracks over 3mm, or corrosion covers more than 20% of the surface—per GB/T 3811-2008 crane design standards. |
Procurement Guide
All parts meet original equipment specifications and GB standards, ensuring compatibility and reliability for Lanzhou JC70 drawworks. To avoid unplanned downtime and maintain drilling efficiency, choose these high-quality spare parts. Contact us to confirm part availability and complete your procurement, securing long-term stable operation of your equipment.
contact us ：
Emeil: [email protected] whatsapp: +86 15275658619
Should you have any purchase intentions, please contact us – we will offer you our most favorable price.