Core Purpose & Equipment Compatibility
This catalog encompasses full-range replacement parts exclusively engineered for JC Series Drilling Drawworks, covering JC14, JC14/11, JC18A, JC18B, JC18/11B, JC21A, JC21D, JC21/11, JC21/11B, JC28/11, JC28A, JC28K, JC28N, JC28/11F, JC32A, and JC32B models. Tailored to drilling contractors, oilfield maintenance teams, equipment procurement managers, and drilling engineering service providers, these parts address critical pain points such as drum wear, braking system failure, and structural loosening caused by high-load cyclic operations, abrasive downhole environments, and frequent braking. Their core purpose is to ensure the safe, stable, and efficient operation of JC series drawworks, extend equipment service life, and comply with API Spec 7K (Drilling and Well Servicing Equipment) and industry safety operation standards.
1. Drawworks Drum Bodies
Drum bodies are core load-bearing components of JC series drilling drawworks, responsible for winding and releasing drilling ropes to realize hoisting and lowering operations. Operating under high-tension rope friction, cyclic load, and impact during drilling, these components are prone to surface wear, groove deformation, and fatigue cracking, which can lead to rope slipping and operational accidents. Manufactured with high-strength alloy steel and precision machining, they ensure excellent wear resistance, load-bearing capacity, and dimensional accuracy, adapting to long-term high-intensity drilling scenarios.
No. | Product Name | Specification | Applicable Model | Material | Primary Wear Causes | Damage Prevention Notes |
1 | Drawworks Drum Body / Main Drum Body | JC14-01-09-00 | JC14 drawworks, JC14/11 drawworks | Alloy steel (42CrMo), quenched and tempered treatment, surface hardening (HRC 50-55), precision turning and grinding | 1. Abrasive wear of drum surface and groove caused by long-term friction with drilling rope; 2. Fatigue cracking from cyclic hoisting load impact. | 1. Regularly inspect drum surface and groove wear; regrind grooves when wear depth exceeds 10% of rope diameter; 2. Ensure rope lubrication to reduce friction; avoid overloading beyond rated capacity. |
2 | Drawworks Drum Body / Main Drum Body | JC21A-01-13A/B-00 | JC21A drawworks, JC21D drawworks, JC21/11B drawworks | Alloy steel (42CrMo), quenched and tempered treatment, surface hardening (HRC 50-55), precision turning and grinding | 1. Groove wear from rope friction; 2. Local stress concentration and deformation due to uneven rope winding. | 1. Use rope guide devices for even winding; avoid overlapping; 2. Check drum for cracks via magnetic particle testing regularly; repair or replace if cracks exist. |
3 | Sand Drum Body | JC21/11-02-11-00 | JC21/11 drawworks | Alloy steel (Q355B), welded structure, surface sandblasting and painting, internal stress relief | 1. Wear from sand and gravel contamination; 2. Weld seam fatigue cracking from cyclic load. | 1. Clean drum surface to remove sand regularly; 2. Conduct annual non-destructive testing on weld seams. |
4 | Main Drum Body | JC28/11-06-11-00 | JC28/11 drawworks | Alloy steel (40CrNiMoA), quenched and tempered, surface nitriding, high fatigue strength | 1. Severe wear from high-tension rope friction; 2. Thermal fatigue from frequent braking heat generation. | 1. Monitor drum temperature during frequent braking; arrange cooling intervals; 2. Replace worn ropes timely to reduce abnormal drum wear. |
5 | Sand Drum Body | JC28/11-04-10-00 | JC28/11 drawworks | Alloy steel (Q355B), welded structure, surface anti-corrosion coating, wear-resistant lining | 1. Lining wear from sand and gravel impact; 2. Corrosion from drilling fluid and moisture. | 1. Inspect lining wear regularly; replace when exceeding limit; 2. Clean drum post-operation to avoid drilling fluid residue. |
6 | Drawworks Drum Body | JC28K-01-00 | JC28K drawworks | Alloy steel (42CrMo), integral forging, precision machining, surface hard chrome plating | 1. Chrome plating wear from rope friction; 2. Deformation from uneven hoisting load. | 1. Avoid sudden start/stop during hoisting to reduce impact; 2. Check plating for peeling; re-plate if needed. |
7 | Drawworks Drum Body | JC32A-01-11-00 | JC28N drawworks | Alloy steel (40CrNiMoA), quenched and tempered, surface hardening, high wear resistance | 1. Fatigue wear from high-frequency hoisting; 2. Groove deformation from improper rope tension. | 1. Adjust rope tension to specified value regularly; 2. Inspect drum dimensional accuracy periodically; repair if deformed. |
8 | Drawworks Drum Body / Main Drum Body | JC18A-01-16-00 | JC18A drawworks, JC18B drawworks, JC18/11B drawworks | Alloy steel (42CrMo), quenched and tempered, surface grinding, precision groove processing | 1. Groove edge wear from rope sliding; 2. Corrosion in marine/humid offshore environments. | 1. Apply anti-corrosion grease in humid environments; 2. Remove burrs on groove edges and打磨 smoothly. |
9 | Main Drum Body | JC28/11F-06-10-00 | JC28/11F drawworks | Alloy steel (40CrNiMoA), integral forging, surface nitriding, high-temperature resistance | 1. Thermal wear in high-temperature drilling environments; 2. Fatigue cracking from cyclic load. | 1. Monitor drum temperature in high-temperature conditions; 2. Perform periodic fatigue testing. |
10 | Sand Drum Body | JC28/11F-04-04-00 | JC28/11F drawworks | Alloy steel (Q355B), welded structure, wear-resistant coating, internal stress relief | 1. Wear-resistant coating wear from sand friction; 2. Weld seam corrosion from drilling fluid immersion. | 1. Touch up coating when local wear occurs; 2. Clean weld seams and apply anti-corrosion paint regularly. |
11 | Sand Drum Body | JC14/11-03-02-00 | JC14/11 drawworks | Alloy steel (Q355B), welded, surface painting, anti-corrosion and wear-resistant | 1. Wear from sand during sand control operations; 2. Deformation from storage/transport collision. | 1. Use protective pads during storage/transport; 2. Inspect for deformation before installation. |
12 | Drawworks Drum Body | JC21A-01-10-00, Φ1070x310mm | JC21A drawworks | Alloy steel (42CrMo), quenched and tempered, surface hardening, precision dimension control | 1. Surface wear from rope friction; 2. Dimensional deviation from long-term high-load operation. | 1. Regularly measure outer diameter and length for deviation; 2. Ensure rope matches groove size. |
13 | Drawworks Drum Body | JC21D-01-05-00, Φ1070x310mm | JC21D drawworks | Alloy steel (42CrMo), quenched and tempered, surface hardening, precision dimension control | 1. Groove wear from rope friction; 2. Fatigue damage from frequent load changes. | 1. Maintain stable hoisting speed; avoid frequent load changes; 2. Replace drum when groove wear affects winding. |
14 | Drum Body | JC28/11-04-08-00, Φ970x210mm | JC28/11 drawworks | Alloy steel (Q355B), welded, surface anti-corrosion treatment | 1. Wear from sand and gravel; 2. Corrosion from humid environments. | 1. Clean drum after each use; 2. Store in dry, ventilated area when not in use. |
15 | Drum Body | JC18/11B-02-03-00, Φ970x210mm | JC18/11B drawworks | Alloy steel (Q355B), welded, surface anti-corrosion treatment | 1. Wear from rope friction and sand contamination; 2. Weld seam fatigue from cyclic load. | 1. Inspect weld seams regularly; 2. Ensure proper rope lubrication. |
16 | Drawworks Drum Body | JC18B-01-06-00, Φ1070x260mm | JC18B drawworks | Alloy steel (42CrMo), quenched and tempered, surface grinding | 1. Surface wear; 2. Deformation from uneven load. | 1. Operate within rated load; 2. Check drum straightness regularly; correct if needed. |
17 | Drum Body | JC28/11-06-12-00, Φ1168x267mm | JC28/11 drawworks | Alloy steel (40CrNiMoA), integral forging, surface nitriding | 1. High-tension rope friction wear; 2. Thermal fatigue from frequent braking. | 1. Optimize braking frequency to reduce thermal impact; 2. Inspect for thermal cracks regularly. |
18 | Drum Body | JC32B-01-07-00, Φ1270x267mm | JC32B drawworks | Alloy steel (40CrNiMoA), integral forging, surface nitriding | 1. Heavy-load groove wear; 2. Fatigue cracking from long-term operation. | 1. Conduct regular non-destructive testing for fatigue cracks; 2. Maintain grooves for smooth winding. |
2. Brake Band Assemblies & Brake Bands
Brake band assemblies and brake bands are critical safety components for decelerating and stopping drums in JC series drawworks. Operating under high-temperature friction, high-pressure clamping, and frequent braking cycles, they are prone to lining wear, band deformation, and fastener loosening, which reduce braking efficiency and pose safety risks. Manufactured with high-temperature resistant friction materials and high-strength steel bands, they ensure reliable braking performance, stable friction coefficients, and strong heat dissipation.
No. | Product Name | Specification | Applicable Model & System | Material | Primary Wear Causes | Damage Prevention Notes |
1 | Brake Band Assembly | JC18A-03-01-00 | JC18A drawworks, JC18B drawworks | Brake band: Carbon steel (Q235) heat-treated; Brake lining: Semi-metallic friction material (high-temperature resistant up to 350°C) | 1. Lining wear from high-temperature friction; 2. Band deformation from uneven clamping force. | 1. Replace lining when thickness <5mm; 2. Adjust brake cylinder pressure for even clamping force. |
2 | Brake Band Assembly | JC28/11-03-05-00 | JC28/11 drawworks main drum brake system | Brake band: Alloy steel (40Cr); Brake lining: Ceramic friction material (high-temperature resistant up to 400°C, low wear rate) | 1. Lining thermal fading from continuous heavy-load braking; 2. Band fatigue deformation from frequent cycles. | 1. Arrange cooling intervals to avoid thermal fading; 2. Check band for deformation; straighten or replace if needed. |
3 | Brake Band Assembly | JC21A-03-01-00 | JC21A drawworks, JC21/11 drawworks main drum | Brake band: Carbon steel (Q235) galvanized; Brake lining: Resin-based friction material (stable friction coefficient) | 1. Normal braking friction lining wear; 2. Band corrosion in humid/corrosive environments. | 1. Clean band and lining regularly; 2. Apply anti-corrosion grease to hinges and fasteners. |
4 | Brake Band Assembly | JC32B-02-02-00 | JC28N drawworks | Brake band: Alloy steel (42CrMo); Brake lining: Ceramic friction material (high wear resistance, good heat dissipation) | 1. Lining wear from heavy-load braking; 2. Lining rivet loosening from vibration. | 1. Check rivets regularly; re-rivet or replace if loose; 2. Monitor braking temperature during heavy loads. |
5 | Brake Band Assembly | JC21/11-03-23-00 | JC21/11 drawworks sand drum | Brake band: Carbon steel (Q235); Brake lining: Wear-resistant resin-based friction material | 1. Lining wear from sand drum braking; 2. Band abrasion from sand contamination. | 1. Clean sand drum and band regularly; 2. Replace lining when worn excessively. |
6 | Brake Band Assembly | JC28A-02-01-00 | JC28K drawworks | Brake band: Alloy steel (40Cr); Brake lining: Semi-metallic friction material (high-temperature resistant) | 1. Band thermal fatigue from frequent high-temperature braking; 2. Normal lining wear. | 1. Ensure good brake system heat dissipation; 2. Inspect band for cracks and fatigue damage regularly. |
7 | Brake Band | JC14-03-07 00 | JC14 drawworks, JC14/11 drawworks main drum and sand drum brake systems | Brake band: Carbon steel (Q235) anti-corrosion coated; Brake lining: Resin-based friction material | 1. Dual-system braking lining wear; 2. Band deformation from improper adjustment. | 1. Adjust brake clearance per OEM specs; 2. Correct band deformation if detected. |
3. Brake Block Bolts & Nuts
Brake block bolts and nuts are essential fasteners securing brake linings to bands in JC series drawworks braking systems. Operating in high-temperature, high-vibration, and corrosive environments, they are prone to thread wear, thermal expansion-induced loosening, and drilling fluid corrosion. Fastener failure can cause lining detachment and braking failure. Manufactured with high-strength alloy steel and anti-corrosion treatments, they ensure reliable fastening and long-term stability.
No. | Product Name | Specification | Applicable Model | Material | Primary Wear Causes | Damage Prevention Notes |
1 | Brake Block Bolt/Nut | JC21A-03-13/JC21A-03-14 | JC21A drawworks | Alloy steel (8.8 grade), quenched and tempered, surface galvanizing | 1. Thread wear from repeated assembly/disassembly; 2. Loosening from braking vibration and thermal expansion. | 1. Tighten nuts to specified torque with a torque wrench; 2. Apply high-temperature anti-seize agent to threads. |
2 | Brake Block Bolt/Nut | JC28A-02-05/JC28A-02-06 | JC28A drawworks | Alloy steel (10.9 grade), high-strength, surface phosphating | 1. Bolt fatigue failure from cyclic vibration; 2. Thread corrosion from drilling fluid and moisture. | 1. Inspect bolts for fatigue cracks regularly; replace if found; 2. Clean threads and apply anti-corrosion grease. |
4. General Structural Components
This category includes a full range of general structural components for JC series drawworks, playing critical roles in load-bearing, structural reinforcement, and component connection. Operating under high-load, high-vibration, and corrosive drilling environments, these components are prone to wear, deformation, and fatigue cracking, affecting overall drawworks stability. Manufactured with high-quality alloy or carbon steel and strict anti-corrosion treatments, they ensure reliable performance and perfect compatibility with JC series models.
No. | Product Name | Specification | Applicable Model | Material | Primary Wear Causes | Damage Prevention Notes |
1 | General Structural Components | JC030028, JC030029, JC030030, JC030031, JC030032, JC030034, JC030036, JC030037, JC030050, JC030051, JC050001, JC050003, JC050004, JC050005, JC050007, JC050008, JC050010, JC050011, JC050012, JC050013, JC050014, JC050015, JC050016, JC030027, JCO30028, JCO30029, JCO30030, JCO30031 | JC Series drawworks (model-specific, refer to OEM manual) | Alloy steel (Q355B / 42CrMo) or carbon steel (Q235), surface anti-corrosion treatment (galvanizing/painting) based on application scenario | 1. Wear and corrosion from environmental factors and operational friction; 2. Fatigue failure from long-term cyclic load; 3. Deformation from collision during transportation/installation. | 1. Follow OEM maintenance schedule for regular inspection, lubrication, and cleaning; 2. Replace components if wear, corrosion, or fatigue cracks are detected; 3. Use protective packaging during transportation to avoid collision; 4. Store spare parts in dry, ventilated environments. |
Procurement Guidance
All parts in this catalog are 100% compatible with JC series drilling drawworks, manufactured in strict compliance with OEM standards and API Spec 7K (Drilling and Well Servicing Equipment) requirements. For drilling operations aiming to ensure the safe and reliable operation of JC series drawworks, improve braking stability, and reduce downtime, these parts provide a professional and cost-effective solution. We invite you to contact our professional sales team to discuss your specific procurement needs, obtain detailed technical parameters and model-matching guidance, and secure authentic, high-quality components tailored to your JC series drilling drawworks maintenance and replacement requirements.
Technical Reference Standards & Support
All products comply with international and industry authoritative standards, including API Spec 7K, ISO 9001 Quality Management System Certification, GB/T 3077 (Alloy Structural Steels), GB/T 700 (Carbon Structural Steels), GB/T 3098.1 (Mechanical Properties of Fasteners Made of Carbon Steel and Alloy Steel), and GB 5763 (Friction Materials for Automobile Brakes). Each part undergoes strict quality testing, including dimensional accuracy verification, material composition analysis, tensile strength testing, wear resistance testing, and high-temperature performance testing. For detailed installation guidelines, maintenance schedules, and troubleshooting support, our dedicated technical team is available to provide professional services, ensuring optimal performance and operational safety of your JC series drilling drawworks.
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