SJ Drawworks Parts Catalog

1

Repair Kit for Main Drum Brake System

Z03020000030AA-ADD

Assorted high-performance materials (matches OEM standards): friction materials, nitrile rubber seals, 65Mn spring steel components, stainless steel fasteners

1. Frequent heavy-load braking causes accelerated wear of friction components and seal aging; 2. Mud and dust ingress leads to component jamming and corrosion.

1. Inspect the brake system regularly (every 50 drilling hours) for wear and contamination; clean and replace kit components as needed; 2. Ensure proper brake adjustment to avoid uneven pressure distribution and excessive wear.

2

Repair Kit for Main Drum

Z03010000026AA-ADD

Assorted OEM-compatible materials: high-strength alloy steel components, FKM (Viton) seals, wear-resistant bushings

1. Continuous rotation under heavy load causes bushing wear and shaft misalignment; 2. Hydraulic oil contamination leads to seal failure and internal component corrosion.

1. Maintain hydraulic oil cleanliness (NAS 8 class or higher) and replace filters regularly; 2. Check main drum concentricity periodically; correct misalignment exceeding 0.05mm promptly.

3

Brake Pad/Shoe (Main Drum)

P 4300011 AA

Friction layer: semi-metallic friction material (high-temperature resistance up to 450°C); Backing plate: Q235 carbon steel (galvanized)

1. Intense friction during heavy-load braking causes rapid wear of the friction layer; 2. High-temperature exposure leads to friction material cracking and delamination.

1. Avoid continuous long-duration braking to prevent overheating; allow brake pads to cool between heavy braking cycles; 2. Replace brake pads when the friction layer thickness is less than 3mm.

1

Repair Kit for Sand Drum Brake System

Z03040000010AA-ADD

Assorted OEM-matched materials: ceramic-reinforced friction components, NBR seals, heat-treated alloy steel springs

1. Frequent auxiliary braking causes friction component wear and spring fatigue; 2. Sand and mud ingress leads to seal damage and component jamming.

1. Clean the sand drum brake system after each drilling shift to remove accumulated sand and mud; 2. Inspect spring elasticity regularly; replace fatigued springs to ensure proper brake engagement.

2

Repair Kit for Sand Drum

Z03030000009AA-ADD

Assorted high-durability materials: wear-resistant alloy steel bushings, FKM seals, corrosion-resistant fasteners

1. Rotational friction under load causes bushing wear and shaft abrasion; 2. Humid drilling environments lead to component corrosion.

1. Apply anti-corrosion lubricant to rotating components regularly; 2. Check sand drum rotation smoothness periodically; replace worn bushings if abnormal noise or vibration occurs.

3

Brake Pad/Shoe (Sand Drum)

P 6400706 AA

Friction layer: ceramic friction material (excellent heat dissipation and wear resistance); Backing plate: 45# carbon steel (heat-treated)

1. Repeated friction during auxiliary braking causes gradual wear of the friction layer; 2. Sand particle embedding leads to uneven wear and scratching of the drum surface.

1. Inspect the friction surface for embedded sand particles regularly; clean or replace pads as needed; 2. Maintain proper clearance between brake pads and drum to ensure uniform wear.

1

Repair Kit for Lower Chain Box

Z06020000013AA-ADD

Assorted OEM-compatible materials: high-strength roller chain links, wear-resistant sprocket segments, NBR oil seals, lithium-based grease

1. High-torque meshing causes chain and sprocket wear; 2. Insufficient lubrication leads to dry friction and accelerated component damage.

1. Lubricate the chain box system with high-temperature, high-pressure lithium-based grease every 100 working hours; 2. Check chain tension regularly; adjust to the specified range to avoid uneven wear.

2

Repair Kit for Chain Box

Z06030000076AA-ADD

Assorted high-performance materials: alloy steel chain components, FKM seals, precision-machined bushings

1. Continuous power transmission causes chain elongation and bushing wear; 2. Oil contamination leads to seal failure and internal component corrosion.

1. Replace chain box oil at recommended intervals (every 500 working hours); 2. Inspect for oil leaks regularly; replace damaged seals promptly to prevent contamination.

3

Friction Piece

P1000337AA

High-temperature resistant friction material (aramid fiber reinforced); Metal substrate: 65Mn spring steel

1. Frictional engagement during power transmission causes gradual wear; 2. High-temperature exposure leads to material hardening and brittleness.

1. Avoid excessive load shock during power transmission to reduce friction piece wear; 2. Inspect the friction piece thickness regularly; replace when wear exceeds 2mm.

1

Air Tube / Bag

Z16160101004AA

Air tube: EPDM rubber (weather-resistant, oil-resistant); Air bag: multi-layer rubber-reinforced fabric (high pressure resistance)

1. Air pressure fluctuations cause rubber fatigue and cracking; 2. UV exposure and oil contamination lead to rubber degradation.

1. Operate within the rated air pressure range (≤0.8 MPa); avoid over-pressurization; 2. Protect air tubes/bags from direct UV exposure and oil splashes; replace if cracks or bulges are found.

2

Air Bag

P0900025AA

NBR rubber (excellent air tightness and oil resistance); Reinforcement layer: polyester cord fabric

1. Frequent inflation and deflation cause rubber fatigue and air leakage; 2. Mechanical impact from drilling site debris leads to surface damage.

1. Ensure the air supply is clean and dry to prevent internal corrosion; 2. Install a protective guard around the air bag to avoid debris impact.

3

Disc Clutch

Z03030000021AA-ADD

Clutch disc: friction material (carbon fiber reinforced); Pressure plate: alloy steel (heat-treated); Hub: 45# carbon steel

1. Frictional engagement during clutch operation causes disc wear; 2. High-temperature exposure leads to pressure plate deformation and friction material delamination.

1. Avoid frequent clutch slipping; engage/disengage smoothly to reduce friction wear; 2. Inspect clutch disc thickness regularly; replace when wear exceeds 1.5mm.