Lanshou LS Drawworks JC-70 Spare Parts

1

Winch brake pulley

JC-70106.06.25.00 (Lanshou LS drawworks JC-70 inventory)

WCB carbon steel, surface quenching treatment (hardness HRC 45-50), with integrated bearing groove, complying with API 8C

1. Wear on the pulley groove due to long-term friction with the brake band; 2. Deformation caused by uneven brake force; 3. Corrosion from drilling site dust and moisture

1. Regularly adjust brake clearance to ensure uniform force during braking; 2. Clean the pulley surface and groove weekly to remove dust and debris; 3. Apply anti-rust grease to the surface every month to prevent corrosion

2

JC-70 winch brake pulley

106.25.10.00

WCB carbon steel, precision machined pulley groove, high concentricity (≤0.02mm), suitable for JC-70 drawworks

1. Groove wear caused by high-load friction; 2. Bearing jamming inside the pulley leading to abnormal wear; 3. Impact damage during equipment transportation or installation

1. Inspect pulley rotation flexibility weekly; 2. Avoid violent collision during transportation and installation; 3. Replace the pulley when groove wear exceeds 0.5mm to prevent brake failure

1

10-meter drive roller chain

32S-2

Alloy steel (20Mn2), chain plates and pins undergo carburizing and quenching treatment, surface blackening anti-corrosion, tensile strength ≥1200MPa

1. Wear between chain links and pins due to lack of lubrication; 2. Elongation caused by long-term high-load operation; 3. Damage from foreign objects jamming the chain during operation

1. Add lithium-based lubricating grease to chain links every 8 hours of operation; 2. Inspect chain elongation weekly (limit ≤3% of original length); 3. Clear foreign objects around the chain in time to avoid jamming

2

10-meter drive roller chain

32S-4

Alloy steel (20Mn2), 4-row chain design, high load-bearing capacity, suitable for heavy-duty power transmission of JC-70 drawworks

1. Uneven wear of multi-row chains caused by improper tension; 2. Pin bending due to sudden load impact; 3. Corrosion from drilling site moisture and harmful gases

1. Adjust chain tension regularly to ensure uniform force on each row; 2. Avoid sudden start and stop of the drawworks to reduce load impact; 3. Clean the chain with diesel oil monthly and reapply lubricant

3

10-meter drive roller chain

24S-6

Alloy steel (20Mn2), 6-row chain structure, high tensile strength and stability, compatible with JC-70 drawworks transmission system

1. Chain plate fatigue fracture due to long-term cyclic load; 2. Wear of chain rollers caused by friction with sprockets; 3. Rust and corrosion from long-term exposure to humid environments

1. Replace the chain every 12 months or when fatigue cracks are found; 2. Ensure the sprocket and chain are properly meshed to avoid uneven friction; 3. Cover the chain with a protective cover to prevent moisture intrusion

1

Outer gear bushing

106.16.30.05

Copper-based alloy (ZCuSn10Pb1), good wear resistance and lubricity, no need for frequent lubrication, suitable for JC-70 transmission gear

1. Wear caused by long-term friction with the gear inner hole; 2. Loosening and abnormal wear due to improper installation; 3. Damage from gear meshing impact

1. Install the bushing with a press fit to ensure tight connection; 2. Inspect bushing tightness monthly and re-press if loose; 3. Avoid excessive gear meshing clearance to reduce impact

2

Inner gear bushing

106.16.36.01

Alloy steel (45#), surface quenching treatment, high hardness, used to protect the gear shaft of JC-70 drawworks

1. Wear on the inner hole due to friction with the gear shaft; 2. Deformation caused by uneven load; 3. Corrosion from lubricating oil contamination

1. Replace lubricating oil regularly to keep it clean; 2. Ensure uniform load distribution during drawworks operation; 3. Inspect the inner hole wear every 6 months and replace if necessary

3

Outer gear bushing

106.16.37.04

Copper-based alloy (ZCuSn10Pb1), precision machined inner and outer diameters, high concentricity, compatible with JC-70 transmission system

1. Wear caused by long-term gear meshing impact; 2. Aging and wear due to lack of lubrication; 3. Damage from foreign objects entering the gear box

1. Add lubricating oil to the gear box regularly; 2. Clean the gear box and remove foreign objects every 3 months; 3. Replace the bushing when outer diameter wear exceeds 0.3mm

4

Inner gear bushing

106.16.37.03

Alloy steel (45#), heat-treated, high tensile strength and wear resistance, used for JC-70 drawworks gear shaft protection

1. Wear between the bushing and gear shaft due to relative movement; 2. Deformation caused by excessive torque; 3. Corrosion from moisture entering the gear box

1. Ensure the gear shaft is clean before installing the bushing; 2. Operate the drawworks within the specified torque range; 3. Check the gear box for moisture leakage monthly

5

Outer gear bushing

106.06.36.02

Copper-based alloy (ZCuSn10Pb1), good shock absorption performance, suitable for high-impact transmission scenarios of JC-70 drawworks

1. Wear caused by frequent gear meshing impact; 2. Loosening due to long-term vibration; 3. Damage from improper disassembly and assembly

1. Use special tools for disassembly and assembly to avoid damage; 2. Check the bushing for looseness weekly and tighten if necessary; 3. Replace the bushing if there is obvious impact damage

6

Outer gear bushing

106.16.36.05

Copper-based alloy (ZCuSn10Pb1), surface anti-corrosion treatment, suitable for harsh drilling site environments

1. Corrosion caused by drilling site dust and moisture; 2. Wear due to long-term friction with gears; 3. Aging caused by high temperature in the gear box

1. Clean the gear box surface regularly to prevent dust accumulation; 2. Control the gear box temperature within 80℃; 3. Apply anti-corrosion grease to the bushing surface annually

7

Inner gear bushing

106.06.36.09

Alloy steel (45#), precision ground inner hole, low surface roughness (Ra≤0.8μm), reducing friction with the gear shaft

1. Wear caused by long-term relative movement with the gear shaft; 2. Damage from metal debris in the lubricating oil; 3. Fatigue wear due to long-term load

1. Install an oil filter in the gear box to remove metal debris; 2. Replace lubricating oil every 6 months; 3. Inspect the bushing for fatigue cracks every 12 months

1

Sprocket of the transmission rotor

Z-20T=50.08 106.16.10.01

Alloy steel (40Cr), surface carburizing and quenching treatment, tooth surface hardness HRC 55-60, 20 teeth, modulus 50.08, complying with API 8C

1. Tooth wear caused by long-term meshing with the drive chain; 2. Tooth breakage due to sudden load impact; 3. Corrosion from drilling site dust and moisture

1. Ensure the sprocket and chain are properly meshed to avoid uneven tooth wear; 2. Avoid sudden start and stop of the drawworks; 3. Clean the sprocket teeth weekly and apply lubricant

2

Bolt for attaching the brake pulley

106.02.24.05

High-strength alloy steel (10.9 grade), heat-treated, high tensile strength and shear resistance, used to fix JC-70 winch brake pulley

1. Loosening and thread wear caused by drawworks vibration; 2. Bolt fracture due to excessive tightening torque; 3. Corrosion from drilling site moisture

1. Tighten the bolt to the specified torque (45-50N·m) using a torque wrench; 2. Check bolt tightness daily and re-tighten if loose; 3. Apply anti-rust paint to the bolt surface monthly

How to confirm that the purchased winch brake pulley (106.25.10.00) is compatible with Lanshou LS Drawworks JC-70?

You can confirm through two reliable methods: 1. Provide the original drawworks model (Lanshou LS JC-70) and pulley model (106.25.10.00) to our technical team, and we will verify the size, installation interface and load-bearing capacity for you; 2. Check the pulley’s outer diameter, inner hole size and bearing groove specification, which must match the original pulley. All pulleys in this guide are dedicated to JC-70 drawworks and comply with API 8C standards.

What is the difference between 32S-2, 32S-4 and 24S-6 drive roller chains, and how to choose the right one for JC-70 drawworks?

The core difference is the number of rows and load-bearing capacity: 32S-2 (2-row, medium load), 32S-4 (4-row, heavy load), 24S-6 (6-row, super heavy load). For Lanshou LS JC-70 drawworks, choose according to the transmission position: 32S-2 for auxiliary transmission, 32S-4 for main transmission, 24S-6 for high-load hoisting transmission. All chains are compatible with JC-70 drawworks and meet the power transmission requirements.

How often should the gear bushings and sprockets of JC-70 drawworks be replaced to ensure safe operation?

The replacement cycle depends on the working intensity: 1. Gear bushings: Replace every 12-18 months under normal working conditions; replace in advance if wear exceeds 0.3mm or looseness occurs. 2. Sprockets: Replace every 18-24 months; replace immediately if tooth wear exceeds 0.5mm or tooth breakage occurs. Regular inspection (monthly) can extend their service life and comply with API 8C maintenance standards.