Parts for Lanzhou LS Mud Pump 3NB-1000C

1

Slush pump

107.14.00

High-strength alloy steel (main body) + gray cast iron (auxiliary structure)

1. Cyclic pressure impact from drilling fluid; 2. Internal component wear leading to overall performance decline; 3. Corrosion from acidic/alkaline drilling fluid.

1. Regularly inspect internal wear per GB/T 5657-2013; 2. Use compatible drilling fluid to avoid corrosion; 3. Conduct routine pressure tests to detect hidden faults.

2

Drive shaft assy

107.14.10.00

Alloy steel (40Cr, quenched & tempered)

1. High torque impact during startup/shutdown; 2. Lack of lubrication causing bearing wear; 3. Misalignment leading to uneven stress distribution.

1. Check coaxiality before installation; 2. Maintain lubrication as per equipment manual; 3. Avoid sudden overload to prevent shaft deformation.

3

Crank shaft assy

107.14.20.00

Alloy steel (45CrNiMoV, carburized)

1. Fatigue cracking from long-term cyclic load; 2. Journal wear due to lubricant contamination; 3. Impurity intrusion causing abrasive wear.

1. Replace lubricant every 800 working hours; 2. Conduct non-destructive testing quarterly; 3. Clean lubrication system filters regularly.

1

Frame assemble

107.14.600.00-1

Gray cast iron (HT300)

1. Uneven installation stress leading to deformation; 2. Long-term vibration causing bolt loosening and structural damage; 3. Corrosion from drilling fluid leakage.

1. Ensure level installation per manufacturer’s guidelines; 2. Re-tighten fixed bolts weekly; 3. Clean surface promptly to avoid corrosion.

2

Frame

107.14.91.00

Gray cast iron (HT300)

1. Fatigue damage from heavy load; 2. Impact damage during transportation/installation; 3. Rust from humid on-site environment.

1. Use protective packaging during transportation; 2. Apply anti-rust paint to exposed surfaces; 3. Inspect for cracks monthly.

3

Plate

107.14.90.14

Carbon steel (Q235B)

1. Friction wear from adjacent components; 2. Corrosion from lubricant or drilling fluid; 3. Over-tightening bolts causing deformation.

1. Torque bolts to standard values; 2. Apply anti-corrosion coating; 3. Check friction surfaces for wear regularly.

4

Description

107.14.01.00

Aluminum alloy (6061)

1. Wear from frequent handling; 2. Corrosion from humid environment; 3. Scratching from on-site debris.

1. Store in a clean, dry place; 2. Avoid rough handling; 3. Wipe clean after use to prevent dust accumulation.

1

Forced lubrication system

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Seamless steel (pipeline) + aluminum alloy (pump body)

1. Valve blockage from oil impurities; 2. Pipeline leakage leading to insufficient oil supply; 3. Pump core wear from long-term operation.

1. Clean oil filters every 300 working hours; 2. Inspect pipelines for leakage weekly; 3. Use qualified lubricant matching equipment requirements.

2

Spray lubrication system

107.14.30.00

Steel (pipeline) + engineering plastic (nozzle)

1. Nozzle clogging from oil impurities; 2. Pipeline aging causing leakage; 3. Pressure instability leading to uneven lubrication.

1. Clean nozzles monthly; 2. Check system pressure regularly; 3. Replace aging pipelines promptly.

3

Dipstick oil lever

107.14.95.00

Stainless steel (304)

1. Wear from frequent insertion/extraction; 2. Corrosion from lubricant additives; 3. Bending due to improper operation.

1. Operate gently when checking oil level; 2. Wipe clean after each use; 3. Replace if bent or scaled.

4

Oil box

107.14.60.00

Galvanized steel

1. Corrosion from moisture in oil; 2. Welding seam leakage from vibration; 3. Internal scaling affecting oil quality.

1. Keep sealed to prevent moisture intrusion; 2. Clean internal scaling annually; 3. Inspect welding seams for cracks.

5

Oil tubing

107.04.90.08

Seamless steel tube (20#)

1. Wear from vibration friction; 2. Blockage from oil impurities; 3. Damage from external pressure or collision.

1. Secure tubing to reduce vibration; 2. Flush tubing when replacing lubricant; 3. Avoid heavy pressure on tubing.

1

Cover

107.14.93.00

Carbon steel (Q235B)

1. Deformation from uneven bolt torque; 2. Corrosion from on-site environment; 3. Wear from internal component friction.

1. Tighten bolts evenly per torque standard; 2. Clean and paint surface regularly; 3. Inspect internal wear during disassembly.

2

Windows cover

107.14.102.00

Carbon steel (frame) + tempered glass (window)

1. Glass breakage from debris impact; 2. Frame corrosion; 3. Sealing ring aging causing leakage.

1. Protect from on-site debris; 2. Replace sealing ring when installing; 3. Clean glass regularly to avoid scratches.

3

Rubber washer

D3-4-67 (62*75)

Nitrile rubber (NBR 70)

1. Aging from high temperature and lubricant; 2. Compression deformation from over-tightening; 3. Damage from sharp edges.

1. Replace every 300 working hours; 2. Ensure proper compression during installation; 3. Avoid contact with sharp components.

4

Rubber washer

D3-4-67 (22*32)

Nitrile rubber (NBR 70)

1. Oil swelling leading to loss of elasticity; 2. Wear from vibration; 3. Misalignment during installation.

1. Store in a dry, cool place; 2. Check alignment before installation; 3. Replace if swollen or cracked.

5

Gasket

107.14.90.03 (50*345)

Asbestos-free rubber

1. High temperature aging; 2. Pressure damage from over-tightening; 3. Oil corrosion leading to brittleness.

1. Do not over-tighten bolts; 2. Replace after disassembly; 3. Avoid contact with high-temperature components.

6

Gasket

107.14.90.02 (50*345)

Asbestos-free rubber

1. Vibration causing edge wear; 2. Moisture leading to softening; 3. Improper storage causing deformation.

1. Store in sealed packaging; 2. Check for deformation before installation; 3. Ensure mating surfaces are clean.

7

Gasket

107.14.90.01 (50*345)

Asbestos-free rubber

1. Chemical corrosion from drilling fluid; 2. Compression fatigue from long-term use; 3. Installation misalignment causing leakage.

1. Clean mating surfaces before installation; 2. Replace every 600 working hours; 3. Avoid contact with drilling fluid.

8

Gasket

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Asbestos-free rubber

1. Aging from long-term storage; 2. Damage during installation; 3. Compression fatigue under high pressure.

1. Use fresh gaskets for installation; 2. Handle gently to avoid tearing; 3. Ensure proper fit with mating components.

1

Plug

JB1000-77 (M60x2)

Carbon steel (Q235B)

1. Thread wear from frequent disassembly; 2. Corrosion from on-site environment; 3. Over-tightening causing thread damage.

1. Use proper tools for disassembly; 2. Apply thread sealant during installation; 3. Inspect threads for damage before use.

2

Nut

GB6170-86 (M16)

Carbon steel (8.8 grade)

1. Thread wear from vibration; 2. Corrosion leading to seizing; 3. Fatigue failure from long-term load.

1. Use lock washers to prevent loosening; 2. Regularly re-tighten; 3. Replace if threads are stripped.

3

Bolt

107.11.99.00 (M16)

Alloy steel (8.8 grade)

1. Fatigue fracture from cyclic load; 2. Thread corrosion; 3. Over-tightening causing shank deformation.

1. Torque to standard values; 2. Inspect for cracks regularly; 3. Replace after one fatigue cycle.

4

Bolt

GB5783-86 (M12*25)

Carbon steel (8.8 grade)

1. Vibration causing loosening and wear; 2. Corrosion from humid environment; 3. Improper torque leading to damage.

1. Apply anti-rust coating; 2. Use torque wrench for installation; 3. Check tightness weekly.

5

Washer

GB93-87 (12)

Carbon steel (spring steel)

1. Elastic fatigue leading to loss of locking function; 2. Corrosion causing breakage; 3. Deformation from over-tightening.

1. Replace with bolts; 2. Do not reuse deformed washers; 3. Ensure matching with bolt size.

6

Pipe

107.14.90.15 (Ø2525x2.5 L=30)

Seamless steel tube (20#)

1. Wear from vibration friction; 2. Corrosion from conveyed fluid; 3. Bending from improper installation.

1. Install with proper support; 2. Flush regularly if conveying corrosive fluid; 3. Avoid bending during installation.

1

Can I use non-standard gaskets to replace the 50*345 specification ones?

No. Non-standard gaskets do not match the sealing interface, leading to leakage of lubricant or drilling fluid, which damages internal components. Use only gaskets matching the original specification (107.14.90.01/02/03).

2

How often should the spray lubrication system (107.14.30.00) be inspected?

It is recommended to inspect weekly, focusing on nozzle blockage and pipeline leakage. Clean nozzles monthly and replace aging pipelines immediately to ensure uniform lubrication of key components.

3

What causes the drive shaft assembly to deform, and how to prevent it?

Main causes are sudden overload and misalignment. Prevent by avoiding rapid startup with full load, checking coaxiality before installation, and maintaining sufficient lubrication to reduce friction-induced stress.