Parts for Lanzhou Mud Pump 3NB1600

1

Slush pump

107.11.00

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

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

1. Conduct pressure tests per GB/T 5657-2013; 2. Use compatible drilling fluid to avoid corrosion; 3. Inspect internal wear quarterly.

2

Drive shaft assy

107.11.10.00

Alloy steel (40Cr, quenched & tempered)

1. High torque impact during startup/shutdown; 2. Lubrication deficiency causing bearing seizure; 3. Misalignment leading to uneven stress and deformation.

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

3

Crank shaft assy

107.11.20.00

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 filters regularly.

1

Frame assemble

107.11.600.00-1

Gray cast iron (HT300)

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

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

2

Frame

107.11.91.00-1

Gray cast iron (HT300)

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

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

3

Plate

107.11.90.27

Carbon steel (Q235B)

1. Friction wear from adjacent components; 2. Corrosion from lubricants 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

107.11.01.00

Aluminum alloy (6061)

1. Wear from frequent handling; 2. Corrosion from humid environments; 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 buildup.

1

Forced lubrication system

107.11.40.00

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

107.11.30.00

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

107.11.95.00

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 levels; 2. Wipe clean after each use; 3. Replace if bent or scaled.

4

Oil box

107.11.60.00

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.W.90.08 (*20x1)

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

107.1U3.00-1

Carbon steel (Q235B)

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

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

2

Windows cover

107.04.90.07 (56)

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 rings during installation; 3. Clean glass regularly to avoid scratches.

3

Rubber washer

D3-4-67 (62*75)

Nitrile rubber (NBR 70)

1. Aging from high temperatures and lubricants; 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

107.11.90.23 V0.2 50x400

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

107.11.90.24 (50.1 50x400)

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

107.11.90.25 (50.05 50*400)

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

107.11.90.32 (58)

Asbestos-free rubber

1. Aging from high-temperature exposure; 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 environments; 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 loads.

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 loads; 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 environments; 3. Improper torque leading to damage.

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

5

Washer

GB93-87 (12)

Carbon steel (spring steel)

1. Elastic fatigue losing locking function; 2. Corrosion causing breakage; 3. Deformation from over-tightening.

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

6

Pipe

107.11.90.29 (Ø2525x2.5 L=30)

Seamless steel tube (20#)

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

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

1

Can I interchange 50x400 gaskets (107.11.90.23/24/25) for the 3NB1600 pump?

No. These gaskets have precise thickness differences (V0.2/50.1/50.05) that ensure sealing accuracy. Interchanging them causes lubricant/drilling fluid leakage, so use the exact part number for each position.

2

How to maintain the forced lubrication system (107.11.40.00) for long service life?

Replace lubricant per the equipment manual (ISO VG 46 anti-wear oil, GB/T 3141-2019), clean filters every 300 working hours, and inspect pipelines for leaks weekly to avoid component damage from insufficient lubrication.

3

What causes the crankshaft assembly to develop fatigue cracks, and how to prevent it?

Cracks result from long-term cyclic loads and lubricant contamination. Prevent by conducting quarterly non-destructive testing, using clean lubricant, and avoiding sudden overloads during startup/shutdown.