HH HONGHUA JC40DB Drawworks Spare Parts List

1

Drawworks frame (JC026.01.00)

Main body: Q355B low-alloy high-strength steel; Welding material: E50 series electrodes; Surface: Anti-corrosion paint (epoxy primer + polyurethane topcoat)

1. Fatigue cracking at welding joints caused by long-term alternating heavy loads during drilling hoisting operations; 2. Corrosion and rust of the frame surface due to long-term exposure to moisture, salt spray, and drilling fluid in the oilfield environment.

1. Conduct non-destructive testing (NDT) on key welding joints every 6 months to detect hidden fatigue cracks in a timely manner; 2. Regularly inspect the surface paint layer, and touch up paint immediately if peeling or damage occurs to enhance corrosion resistance; 3. Avoid direct impact of heavy objects on the frame during equipment handling and on-site operations.

2

Drum Assembly (JC026.02.00)

Drum body: 42CrMo alloy steel (quenched and tempered); Shaft: 40Cr alloy steel; Liner: Wear-resistant alloy steel or rubber

1. Wear and grooving of the drum surface and liner caused by long-term friction with the steel wire rope during hoisting and lowering operations; 2. Deformation of the drum shaft due to uneven stress caused by improper rope arrangement or overload hoisting.

1. Regularly check the wear condition of the drum surface and liner; replace the liner when the wear depth exceeds 3mm or grooving occurs; 2. Ensure the steel wire rope is evenly arranged on the drum, and adjust the rope guide device in time if deviation is found; 3. Strictly abide by the rated load limit, and prohibit overload hoisting to avoid excessive stress on the drum shaft.

3

Gear Box (ZJ40DBS-J-00)

Box body: HT250 gray cast iron; Gears: 20CrMnTi alloy steel (carburized and quenched); Shaft: 40CrNiMo alloy steel; Bearings: GCr15 bearing steel

1. Wear, pitting, and gluing of gear teeth caused by insufficient lubrication or contamination of lubricating oil with metal particles; 2. Leakage of lubricating oil at the box body joint surface due to aging and hardening of the sealing gasket.

1. Replace the lubricating oil and oil filter according to the maintenance schedule, and ensure the oil meets the specified grade to maintain good lubrication and cooling effects; 2. Regularly inspect the joint surface of the gearbox for oil leakage, and replace the sealing gasket in time if leakage occurs; 3. Monitor the operating temperature and noise of the gearbox during operation; stop the machine for inspection immediately if abnormal temperature rise or noise is found.

1

Assitance drive device (JC026.03.00)

Housing: Aluminum alloy or cast iron; Transmission parts: Alloy steel; Seals: Nitrile rubber

1. Wear of internal transmission gears or bearings caused by long-term high-speed operation and insufficient lubrication; 2. Damage to the sealing ring due to the invasion of dust and moisture, leading to oil leakage and internal component corrosion.

1. Regularly add lubricating grease to the auxiliary drive device according to the maintenance manual to ensure sufficient lubrication of moving parts; 2. Inspect the sealing performance of the device regularly, and replace the sealing ring in time if oil leakage is found; 3. Install a dust cover to prevent dust and moisture from entering the internal components.

2

Friction wheel assembly (JC026.04.00)

Friction wheel: Wear-resistant alloy steel or rubber-coated steel; Shaft: 40Cr alloy steel; Bearing: GCr15 bearing steel

1. Wear and aging of the friction surface caused by long-term friction transmission; 2. Damage to the bearing due to uneven stress on the friction wheel caused by misalignment of the transmission system.

1. Regularly inspect the wear condition of the friction surface; replace the friction wheel when the wear depth exceeds the limit; 2. Check and adjust the alignment of the transmission system regularly to ensure uniform stress on the friction wheel; 3. Lubricate the bearing regularly to reduce friction and wear during operation.

3

A Motor

Stator and rotor: Silicon steel sheet; Shaft: 45# carbon steel; Housing: Cast iron; Insulation material: Class F insulation

1. Overheating and burnout of the motor due to overload operation or poor heat dissipation; 2. Damage to the bearing caused by dust invasion and insufficient lubrication, leading to increased noise and vibration.

1. Monitor the load current of the motor during operation to ensure it does not exceed the rated current, avoiding overload; 2. Regularly clean the heat dissipation fins of the motor to ensure good heat dissipation; 3. Lubricate the motor bearing every 3 months, and replace the bearing if abnormal noise or vibration occurs.

4

B Motor

Stator and rotor: Silicon steel sheet; Shaft: 45# carbon steel; Housing: Cast iron; Insulation material: Class F insulation

1. Damage to the insulation layer caused by moisture invasion in the humid oilfield environment, leading to short circuit faults; 2. Wear of the carbon brush (for brushed motors) caused by long-term operation, resulting in poor contact and sparking.

1. Ensure the motor junction box is tightly sealed to prevent moisture from entering; 2. For brushed motors, regularly inspect the wear condition of the carbon brush and replace it when the wear reaches the limit; 3. Regularly measure the insulation resistance of the motor to ensure it meets the specified requirements.

1

Coupling guard I (JC026.05.00); Coupling guard II (JC026.06.00)

Guard body: Q235 mild steel (surface painted); Fasteners: Carbon steel (zinc plated)

1. Deformation and damage caused by collision with heavy objects during on-site operation and maintenance; 2. Corrosion of the guard surface due to long-term exposure to the external environment, reducing structural strength.

1. During on-site operations, avoid collision with the coupling guard; place warning signs around it if necessary; 2. Regularly inspect the guard for deformation and corrosion, and repair or replace it immediately if damage is found; 3. Ensure the guard is firmly installed, and tighten loose fasteners in time.

2

Clutch Guard (JC026.07.00)

Guard body: Q235 mild steel (surface painted) or aluminum alloy; Observation window: Tempered glass

1. Damage to the tempered glass observation window caused by impact or falling objects; 2. Loosening and falling off of the guard due to vibration during drawworks operation.

1. Avoid placing heavy objects on the observation window, and replace the glass immediately if it is broken; 2. Check the tightness of the guard fasteners regularly, especially after severe vibration, and apply anti-loosening thread lock compound if necessary; 3. Clean the observation window regularly to ensure clear observation of the clutch operation status.

3

Brake Guard (JC026.12.00)

Guard body: Q235 mild steel (surface painted); Reinforcement ribs: Alloy steel

1. High-temperature deformation caused by long-term proximity to the brake disc (which generates heat during braking); 2. Corrosion of the guard surface due to oil contamination and moisture.

1. Regularly inspect the guard for deformation caused by high temperature, and correct or replace it if necessary; 2. Clean the oil stains on the guard surface regularly, and touch up paint to prevent corrosion; 3. Ensure the guard does not interfere with the movement of the brake mechanism during installation.

4

Drum guard (Left) (JC026.14.00); Drum guard (right) (JC026.18.00)

Guard body: Q235 mild steel (surface painted); Connecting parts: Carbon steel

1. Wear and damage caused by long-term friction with the steel wire rope (if the rope is deviated); 2. Deformation of the guard due to the impact of the steel wire rope during sudden braking.

1. Regularly check the alignment of the steel wire rope to avoid friction with the drum guard; 2. Inspect the guard for wear and deformation regularly, and repair or replace it if damage is found; 3. Strengthen the fixation of the guard at the connection points to enhance resistance to impact.

5

Guard 1160X660X5 (JC026.19)

Guard body: 5mm thick Q235 mild steel (surface painted); Fastening brackets: Alloy steel

1. Bending and deformation caused by external impact; 2. Corrosion and rust of the steel plate due to long-term exposure to moisture and drilling fluid.

1. During on-site construction, take protective measures to avoid collision with the guard; 2. Regularly inspect the guard for corrosion, and touch up paint or replace it if necessary; 3. Check the welding quality of the fastening brackets, and re-weld if there is welding detachment.

6

Shaft head cover (JC026.20)

Cover body: Cast iron or aluminum alloy; Seal ring: Nitrile rubber

1. Wear of the seal ring caused by long-term rotation of the shaft, leading to oil leakage; 2. Damage to the cover body due to collision during maintenance.

1. Regularly inspect the seal ring for wear and aging, and replace it in time if oil leakage is found; 2. Handle the shaft head cover with care during maintenance to avoid collision and damage; 3. Ensure the cover is tightly installed to prevent dust and moisture from entering the shaft head bearing.

7

Rope guard (DSQ-01.00)

Guard body: Wear-resistant alloy steel or rubber; Frame: Q235 mild steel (surface painted)

1. Wear of the guard surface caused by long-term friction with the steel wire rope; 2. Corrosion of the frame caused by the oilfield environment, leading to structural loosening.

1. Regularly inspect the wear condition of the rope guard; replace it when the wear depth exceeds the limit; 2. Lubricate the steel wire rope regularly to reduce friction with the guard; 3. Check the tightness of the frame fasteners regularly, and tighten or replace them if loose.

8

Hydraulic disc break (HXPS)

Brake disc: 42CrMo alloy steel (quenched and tempered); Caliper body: Aluminum alloy; Friction pad: Ceramic composite material; Seal ring: Fluororubber

1. Wear of the friction pad caused by long-term braking; 2. Corrosion of the hydraulic cylinder inside the caliper due to moisture invasion, leading to jamming of the brake mechanism.

1. Regularly inspect the thickness of the friction pad; replace it when the thickness is less than the minimum limit value; 2. Maintain the cleanliness of the hydraulic oil to prevent contamination from causing cylinder jamming; 3. Check the brake disc for wear and deformation regularly, and grind or replace it if necessary.

1

Oil inlet pipeline I (JC026.08.00); Oil inlet pipeline II (JC026.09.00); Oil outlet pipe (JC026.10.00)

Pipeline body: Seamless steel pipe (20# carbon steel) or high-pressure rubber hose; Joints: Carbon steel (zinc plated) or stainless steel; Seal ring: Nitrile rubber

1. Aging, hardening, and cracking of rubber hoses caused by long-term exposure to high temperature and oil; 2. Leakage at pipeline joints due to loosening of fasteners caused by equipment vibration.

1. Regularly inspect the pipeline for aging, cracking, and oil leakage; replace rubber hoses every 2 years or if damage is found; 2. Check the tightness of pipeline joints regularly, especially after severe vibration, and apply anti-loosening thread lock compound to fasteners; 3. Avoid excessive bending and twisting of rubber hoses during installation and operation.

2

Lubrication pump (KCB55)

Pump body: Cast iron; Gears: 45# carbon steel (quenched); Shaft: 40Cr alloy steel; Seal ring: Nitrile rubber

1. Wear of gear teeth and bearings caused by contamination of lubricating oil with metal particles; 2. Oil leakage at the pump shaft seal due to aging and wear of the seal ring.

1. Replace the lubricating oil and oil filter according to the maintenance schedule to ensure oil cleanliness; 2. Regularly inspect the pump for oil leakage, and replace the shaft seal ring in time if leakage occurs; 3. Monitor the operating noise and pressure of the lubrication pump during operation; stop the machine for inspection immediately if abnormalities are found.

3

Lubrication Plate (JC026.17)

Plate body: Q235 mild steel (surface painted); Lubrication nozzles: Copper alloy or stainless steel

1. Blockage of lubrication nozzles caused by contamination of lubricating oil with impurities; 2. Corrosion of the plate body and nozzles due to moisture and oil contamination.

1. Regularly clean the lubrication nozzles to ensure smooth oil flow; 2. Inspect the plate body for corrosion, and touch up paint if necessary; 3. Check the connection between the lubrication plate and the pipeline regularly to ensure tightness and avoid oil leakage.

1

Bolt M3X10 (GB/T5783-86); Bolt M10X25 (GB/T5781-86); Bolt M12X30 (GB/T5781-86); Bolt M12X60 (GB/T5781-86); Bolt M30X140 (GB/T5783-86); Bolt M36X140 (GB/T5782-86); Bolt M36x200 (GB5782-86)

Bolt body: 8.8 grade alloy steel; Surface treatment: Zinc plating or black oxide; Thread: Precision rolled

1. Loosening and even falling off caused by long-term equipment vibration; 2. Corrosion and rust of the bolt surface due to the oilfield environment, leading to thread seizing and difficulty in disassembly.

1. Use anti-loosening washers or apply anti-loosening thread lock compound when installing bolts, especially for key components; 2. Regularly inspect the tightness of bolts, and retighten them if loose; 3. Apply anti-rust oil to bolts regularly, and replace severely corroded bolts in time.

2

countersunk head screw M10X25 (GB/T819-85)

Screw body: 8.8 grade alloy steel; Surface treatment: Zinc plating; Head: Countersunk head (precision machined)

1. Wear of the cross slot caused by improper use of tools during installation and disassembly; 2. Loosening caused by equipment vibration, affecting the flatness of the connected surface.

1. Use a matching cross screwdriver during installation and disassembly to avoid damaging the cross slot; 2. Ensure the screw is fully seated in the countersunk hole to maintain the flatness of the connected surface; 3. Apply anti-loosening thread lock compound to enhance the anti-loosening effect.

3

Gasket 12 (GB/T93-87); Gasket 30 (GB/T93-87); Gasket 36 (GB/T93-87)

Gasket material: Spring steel 65Mn; Surface treatment: Phosphating

1. Loss of elastic tension caused by over-compression during installation; 2. Corrosion and rust caused by moisture and oil contamination, leading to brittle fracture.

1. Do not reuse gaskets that have lost elasticity (fail to spring back after compression); 2. Install the gasket in the correct direction (the open end faces the direction of rotation) to ensure the anti-loosening effect; 3. Store spare gaskets in a dry and ventilated environment to prevent corrosion.

4

Label (JC026.15); Name plate (JC026.16)

Label: PVC or polyester film (waterproof and oil-resistant); Name plate: Aluminum alloy (anodized) or stainless steel; Printing: Screen printing or laser engraving

1. Fading and blurring of printing caused by long-term exposure to sunlight and oil contamination; 2. Peeling and falling off of labels due to poor adhesion caused by vibration.

1. Avoid direct sunlight on labels and name plates; clean oil stains on their surfaces regularly with a neutral detergent; 2. Check the adhesion of labels regularly, and reattach them with high-temperature and high-viscosity adhesive if they are loose; 3. Replace labels or name plates immediately if the printing is blurred and unrecognizable.