LPCMW Mud Pump Spares

1

107.11.10.05 - Shaft

Alloy steel (42CrMo) with quenching and tempering treatment; Surface hardness HRC 28-32, high tensile strength and impact toughness; Precision grinding for dimensional accuracy

1. Shaft bending deformation due to uneven load during drilling slurry transportation; 2. Shaft surface wear and corrosion caused by slurry leakage and chemical erosion; 3. Fatigue fracture at the shaft shoulder due to long-term alternating load

1. Monitor the pump's operating load in real time, avoiding overload operation (≤110% rated load); 2. Regularly check the sealing performance of the shaft end, replacing worn oil seals promptly to prevent slurry leakage; 3. Conduct magnetic particle inspection every 3000 working hours to detect hidden fatigue cracks

2

107.11.10.07 - Right-hand gear

Alloy steel (20CrMnTi) with carburizing and quenching treatment; Gear tooth surface hardness HRC 58-62, core hardness HRC 30-35; High wear resistance and impact resistance

1. Gear tooth pitting and wear due to insufficient lubrication and metal particles in the lubricating oil; 2. Gear tooth breakage caused by sudden load impact during drilling start-stop; 3. Gear meshing deviation leading to uneven wear due to improper installation

1. Use lubricating oil meeting GB 30532-2014 standard (VG 46) and replace the oil filter (10μm precision) every 1500 working hours; 2. Avoid frequent sudden start-stop of the pump, and start the pump with no load first; 3. Check gear meshing clearance regularly (standard 0.15-0.25mm) and adjust if deviation occurs

3

107.11.10.08 - Left-hand gear

Alloy steel (20CrMnTi) with carburizing and quenching treatment; Precision gear grinding for smooth meshing; Corrosion-resistant coating on the surface

1. Gear tooth wear acceleration due to mixed use of incompatible lubricants; 2. Corrosion of gear surface caused by humid and corrosive drilling environment; 3. Fatigue wear of gear teeth due to long-term continuous operation

1. Use a single type of lubricating oil and avoid mixing different brands/models; 2. Clean the gear surface regularly and apply anti-corrosion grease in humid environments; 3. Arrange regular shutdown intervals (20 minutes every 4 hours) to reduce gear fatigue

1

107.11.20.33 - Crosshead, Left

Forged alloy steel (40CrNiMoA); Sliding surface with babbitt alloy lining; High load-bearing capacity and good lubricity

1. Babbitt alloy lining wear due to insufficient lubricating oil supply; 2. Crosshead jamming caused by slurry contamination entering the sliding surface; 3. Local wear of the sliding surface due to misalignment of the crosshead and guide rail

1. Ensure the lubricating oil pressure is within 0.2-0.4MPa and check the oil supply pipeline for blockages regularly; 2. Strengthen the sealing of the crosshead chamber to prevent slurry intrusion; 3. Check the parallelism of the crosshead and guide rail every 2000 working hours (error ≤0.05mm/m)

2

107.11.20.34 - Crosshead, center & right

Forged alloy steel (40CrNiMoA); Sliding surface with chrome plating; High wear resistance and corrosion resistance

1. Sliding surface wear due to high-frequency reciprocating friction; 2. Corrosion caused by acidic slurry leakage; 3. Crosshead deformation due to excessive impact load

1. Maintain sufficient lubrication and ensure the lubricating oil has good extreme pressure performance; 2. Regularly check the seal of the pump cylinder to prevent acidic slurry leakage; 3. Control the pump's operating pressure within the rated range to avoid excessive impact

3

107.11.20.37 - Crosshead pin

Alloy steel (35CrMo) with quenching and tempering treatment; Surface hardness HRC 35-40; High fatigue strength

1. Pin surface wear due to relative rotation with the crosshead and connecting rod; 2. Pin bending deformation caused by lateral force during operation; 3. Corrosion of the pin due to lubricating oil oxidation

1. Lubricate the pin and bushing regularly with high-temperature grease; 2. Check the alignment of the connecting rod and crosshead to reduce lateral force; 3. Replace the lubricating oil every 3000 working hours and clean the oil circuit

4

107.11.20.44 - Pin retainer

Carbon steel (Q235B) with galvanized coating; High strength and corrosion resistance

1. Retainer deformation due to improper installation torque; 2. Corrosion damage in humid drilling environments; 3. Fatigue failure due to long-term vibration

1. Tighten the retainer with a torque wrench according to the specified torque (25±2 N·m); 2. Apply anti-rust oil to the retainer surface regularly; 3. Install a shock-absorbing gasket between the retainer and the crosshead

5

107.11.20.39 (δ2) - Shim for pin retainer

Spring steel (65Mn) with surface phosphating treatment; Good elasticity and wear resistance

1. Shim deformation due to excessive preload; 2. Wear of the shim surface due to long-term friction; 3. Rusting caused by moisture intrusion

1. Select the appropriate thickness of shim according to the assembly gap, avoiding excessive preload; 2. Check the shim for wear during regular maintenance and replace if necessary; 3. Ensure the assembly environment is dry and clean

6

107.11.20.40 (δ1) - Shim for pin retainer

Spring steel (65Mn) with surface phosphating treatment; High precision thickness tolerance (±0.02mm)

1. Shim breakage due to improper assembly (bending during installation); 2. Wear acceleration due to contamination between the shim and retainer; 3. Elastic fatigue due to long-term compression

1. Use special tools for assembly to avoid bending the shim; 2. Clean the contact surface of the shim and retainer before assembly; 3. Replace the shim every 2000 working hours to prevent elastic fatigue

7

107.11.20.41 (δ0.5) - Shim for pin retainer

Spring steel (65Mn) with surface phosphating treatment; Good corrosion resistance

1. Corrosion caused by contact with water-based drilling fluid; 2. Shim wear due to vibration; 3. Thickness reduction due to long-term compression

1. Isolate the shim from drilling fluid with a seal; 2. Check the tightness of the retainer regularly to reduce vibration; 3. Measure the shim thickness during maintenance and replace if the reduction exceeds 0.1mm

8

107.11.20.42 (δ0.25) - Shim for pin retainer

Spring steel (65Mn) with surface phosphating treatment; Thin and flexible, suitable for fine gap adjustment

1. Shim tearing due to sharp edges on the contact surface; 2. Wear due to insufficient lubrication; 3. Deformation due to temperature rise

1. Smooth the contact surface to remove sharp edges before assembly; 2. Apply a thin layer of lubricating oil on the shim surface; 3. Control the operating temperature of the crosshead assembly within 60℃

1

154942Q (Φ209×Φ282×236) - Bearing

High-carbon chromium bearing steel (GCr15); Inner and outer rings with quenching treatment; Cage made of brass; High load-bearing capacity and wear resistance

1. Bearing burnout due to insufficient lubrication; 2. Bearing wear caused by metal particles in the lubricating oil; 3. Bearing corrosion due to moisture entering the bearing chamber

1. Fill the bearing with lithium-based grease (GB 7324-2019) every 1000 working hours; 2. Install a high-precision oil filter (5μm) in the lubricating oil circuit; 3. Check the bearing cover seal regularly and replace worn seals promptly

2

32848HU (Φ240×Φ390×108) - Bearing

High-carbon chromium bearing steel (GCr15SiMn); Surface with anti-corrosion coating; Cage made of engineering plastic (PA66) with glass fiber reinforcement

1. Bearing cage damage due to high operating temperature (exceeding 80℃); 2. Rolling element wear due to uneven load; 3. Bearing seizure caused by slurry contamination

1. Ensure the bearing operating temperature does not exceed 80℃, and strengthen heat dissipation if necessary; 2. Adjust the assembly to ensure uniform load distribution; 3. Strengthen the sealing of the bearing chamber to prevent slurry intrusion

3

107.11.10.01 - Bearing cover

Gray cast iron (HT250) with machining; Surface with anti-rust paint; Good sealing performance

1. Cover deformation due to improper installation torque; 2. Corrosion damage in humid and corrosive environments; 3. Seal groove wear due to long-term seal replacement

1. Tighten the bearing cover bolts evenly with a torque wrench; 2. Apply anti-corrosion coating to the cover surface regularly; 3. Check the seal groove for wear during maintenance and repair if necessary

4

107.11.10.03 - Bearing cage

Brass (H62); High precision machining; Good thermal conductivity and wear resistance

1. Cage wear due to friction with rolling elements; 2. Cage deformation due to high temperature; 3. Corrosion caused by lubricating oil oxidation products

1. Use lubricating oil with good oxidation stability; 2. Control the bearing operating temperature within the allowable range; 3. Replace the bearing cage together with the bearing when replacing the bearing

5

107.11.20.36 - Outer retainer

Alloy steel (40Cr) with quenching treatment; High strength and wear resistance

1. Retainer wear due to relative rotation with the bearing; 2. Deformation caused by impact load; 3. Corrosion in corrosive drilling environments

1. Lubricate the contact surface between the retainer and the bearing regularly; 2. Avoid excessive impact during pump operation; 3. Apply anti-corrosion grease to the retainer surface in corrosive environments

6

107.11.20.35 - Inside retainer

Alloy steel (40Cr) with quenching treatment; Precision machining for dimensional accuracy

1. Retainer wear due to contamination between the retainer and the shaft; 2. Fatigue failure due to long-term vibration; 3. Corrosion caused by moisture intrusion

1. Clean the contact surface between the retainer and the shaft before assembly; 2. Install a shock-absorbing gasket to reduce vibration; 3. Ensure the retainer is tightly fitted to prevent moisture intrusion

1

D7-1-67 (260x300x20) - Oil seal

Nitrile rubber (NBR) seal lip with spring reinforcement; Metal skeleton made of carbon steel; High oil resistance and wear resistance, suitable for -40℃ to 120℃

1. Seal lip wear due to shaft surface scratches; 2. Oil seal aging and cracking caused by high temperature; 3. Seal failure due to slurry contamination

1. Check the shaft surface for scratches before installing the oil seal, and polish if necessary; 2. Control the operating temperature of the shaft end within 80℃; 3. Install a dust cover to prevent slurry from entering the oil seal

2

107.11.10.04 (δ1) - Gasket

Asbestos-free fiber with nitrile rubber coating; High temperature resistance (up to 300℃) and good sealing performance

1. Gasket deformation due to over-tightening; 2. Gasket burnout due to oil leakage and high temperature; 3. Damage caused by improper storage (moisture absorption)

1. Tighten the bolts evenly with a torque wrench according to the specified torque; 2. Check for oil leakage regularly and replace the gasket immediately if leaks are found; 3. Store the gasket in a dry, sealed container

3

107.11.10.09 (δ2) - Gasket

Asbestos-free fiber with nitrile rubber coating; High pressure resistance (up to 40MPa) and good elasticity

1. Gasket damage due to uneven pressure during installation; 2. Corrosion caused by contact with acidic lubricating oil; 3. Wear due to long-term vibration

1. Tighten the bolts in a crisscross pattern to ensure even pressure; 2. Use lubricating oil compatible with the gasket material; 3. Install a shock-absorbing washer between the gasket and the flange

4

107.11.10.10 (δ1) - Gasket

Asbestos-free fiber with nitrile rubber coating; Thin and flexible, suitable for small gap sealing

1. Gasket tearing due to sharp edges on the flange surface; 2. Seal failure due to gasket aging; 3. Damage caused by repeated disassembly and assembly

1. Smooth the flange surface to remove sharp edges before installation; 2. Replace the gasket every 1500 working hours or when disassembled; 3. Use a gasket of the correct size and thickness

5

107.11.10.11 (δ0.5) - Gasket

Asbestos-free fiber with nitrile rubber coating; High precision thickness tolerance

1. Gasket deformation due to temperature rise; 2. Corrosion caused by moisture intrusion; 3. Wear due to insufficient compression

1. Control the operating temperature within the gasket's allowable range; 2. Seal the flange connection to prevent moisture intrusion; 3. Ensure the compression amount of the gasket is within 15-25%

6

107.11.10.12 (δ0.4) - Gasket

Asbestos-free fiber with nitrile rubber coating; Good chemical resistance

1. Gasket damage due to chemical corrosion of drilling fluid; 2. Wear due to vibration; 3. Seal failure due to improper installation

1. Isolate the gasket from drilling fluid with a seal; 2. Check the tightness of the connection regularly to reduce vibration; 3. Follow the correct installation procedure, ensuring the gasket is flat and not skewed

7

Seal

Fluororubber (FKM); High temperature resistance (up to 200℃) and excellent chemical resistance to acids, alkalis, and organic solvents

1. Seal aging and hardening caused by high temperature; 2. Seal damage due to friction with sharp objects; 3. Seal failure due to incompatible media

1. Control the operating temperature within the seal's allowable range; 2. Clean the installation surface and remove sharp objects before installation; 3. Confirm that the seal material is compatible with the working medium

1

107.11.20.43 (M20x55) - Screw

Alloy steel (8.8 grade) with galvanized coating; High tensile strength and corrosion resistance

1. Thread wear and stripping due to improper use of tools; 2. Bolt loosening due to long-term vibration; 3. Corrosion caused by humid and corrosive environments

1. Use a socket wrench matching the screw size to avoid slipping and damaging the thread; 2. Use a locknut or thread-locking adhesive to prevent loosening; 3. Apply anti-rust oil to the screw surface regularly

2

GB32.1-88 (M16×30) - Screw

Alloy steel (8.8 grade) with black oxide treatment; High strength and wear resistance, complying with GB32.1-88 standard

1. Bolt fatigue fracture due to excessive preload; 2. Thread corrosion caused by moisture intrusion; 3. Damage due to over-tightening

1. Tighten the bolt according to the specified preload (checked with a torque wrench); 2. Seal the bolt connection to prevent moisture intrusion; 3. Do not exceed the maximum tightening torque specified in the standard

3

G85783-86 (M20x50) - Bolt

Alloy steel (10.9 grade) with galvanized coating; High load-bearing capacity, complying with G85783-86 standard

1. Bolt breakage due to overload operation of the pump; 2. Thread wear due to repeated disassembly and assembly; 3. Corrosion caused by saltwater in offshore drilling environments

1. Ensure the pump's operating load does not exceed the rated value to avoid excessive force on the bolt; 2. Replace the bolt if it is disassembled and assembled more than 5 times; 3. Use stainless steel bolts or apply anti-corrosion treatment in offshore environments

4

GB93-87 (20) - Washer

Carbon steel (Q235) with galvanized coating; High flatness, complying with GB93-87 standard

1. Washer deformation due to over-tightening; 2. Corrosion damage in humid environments; 3. Wear due to friction with the bolt head

1. Use the washer with the correct bolt size and tighten according to the specified torque; 2. Apply anti-rust oil to the washer surface; 3. Replace the washer together with the bolt when replacing the bolt

5

107.11.10.06 - Key

Carbon steel (45#) with quenching treatment; High strength and wear resistance

1. Key wear due to relative movement between the shaft and hub; 2. Key breakage caused by overload torque; 3. Corrosion caused by lubricating oil oxidation

1. Ensure the key is tightly fitted with the keyway, and replace if there is excessive clearance; 2. Avoid overload operation of the pump to prevent excessive torque on the key; 3. Use lubricating oil with good oxidation stability

6

107.11.10.13 (50.8x38.1x385) - Key

Alloy steel (40Cr) with quenching treatment; High fatigue strength and wear resistance

1. Key wear due to vibration; 2. Keyway damage caused by improper installation; 3. Corrosion in humid environments

1. Install a shock-absorbing gasket to reduce vibration; 2. Check the keyway for damage before installation, and repair if necessary; 3. Apply anti-rust grease to the key surface before installation

1

107.11.20.38 (Φ20x2 L=25) - Oil conductor

Stainless steel (304); High corrosion resistance and pressure resistance; Smooth inner wall for unobstructed oil flow

1. Oil conductor blockage due to lubricating oil oxidation and sludge accumulation; 2. Corrosion caused by acidic lubricating oil; 3. Damage due to external impact

1. Replace the lubricating oil regularly and clean the oil conductor; 2. Use lubricating oil with good oxidation stability and anti-corrosion performance; 3. Install a protective sleeve around the oil conductor to avoid impact

2

107.11.12.00 - Oil box

Carbon steel (Q235B) with anti-rust paint inside and outside; High strength and good sealing performance

1. Oil box corrosion due to moisture and oxygen in the air; 2. Contamination of the oil box due to slurry leakage; 3. Oil box deformation due to external impact

1. Keep the oil box sealed to prevent moisture intrusion; 2. Check the oil box for slurry leakage regularly and clean if necessary; 3. Avoid collision with the oil box during operation and maintenance

3

Φ2 L=2500 - Wire

High-carbon steel wire with galvanized coating; High tensile strength and corrosion resistance

1. Wire wear due to friction with other components; 2. Corrosion caused by humid environments; 3. Fatigue breakage due to long-term tension

1. Install the wire away from moving components to avoid friction; 2. Apply anti-rust oil to the wire surface regularly; 3. Check the wire tension regularly and adjust if necessary, replacing if fatigue cracks are found

4

Φ12, L=1500 - Wire

High-carbon steel wire with galvanized coating; Thick galvanized layer for enhanced corrosion resistance; High load-bearing capacity

1. Wire breakage due to overload; 2. Corrosion caused by saltwater in offshore drilling; 3. Wear due to abrasion with sharp objects

1. Ensure the wire load does not exceed the rated value; 2. Use stainless steel wire or apply anti-corrosion treatment in offshore environments; 3. Avoid contact with sharp objects and install a protective sleeve if necessary

5

107.11.10.02 - Bush

Bronze alloy (CuSn10); Good lubricity and wear resistance; Suitable for sliding friction components

1. Bush wear due to insufficient lubrication; 2. Abrasion caused by metal particles in the lubricating oil; 3. Corrosion caused by moisture intrusion

1. Lubricate the bush regularly with high-temperature grease; 2. Use a high-precision oil filter to remove metal particles; 3. Seal the bush installation position to prevent moisture intrusion

How to confirm the compatibility of these spares with my LPCMW mud pump?

The key steps are: 1. Confirm the exact model and serial number of your LPCMW mud pump (available on the pump's nameplate); 2. Match the spare part model with the LPCMW mud pump parts manual (each spare part model corresponds to a specific pump component); 3. Consult professional suppliers with the pump's model and serial number to ensure the spares are 100% compatible. It is not recommended to use non-matching spares, which may cause component damage and affect pump performance.

What are the key points for the daily maintenance of LPCMW mud pump spares to extend their service life?

1. Lubrication management: Regularly check the lubricating oil level, temperature, and quality, replace the oil and filter according to the schedule, and ensure sufficient lubrication of all moving components. 2. Sealing inspection: Check the sealing performance of oil seals, gaskets, and other components regularly, and replace worn or damaged seals promptly to prevent slurry and moisture intrusion. 3. Fastener inspection: Regularly check the tightness of bolts, screws, and other fasteners, and use locknuts or thread-locking adhesive to prevent loosening due to vibration. 4. Cleaning maintenance: Clean the pump body, oil box, and oil conductor regularly to remove sludge, slurry, and other contaminants. 5. Regular inspection: Conduct regular non-destructive testing on key components such as shafts and crossheads to detect hidden faults early.

What are the risks of using low-quality counterfeit spares for LPCMW mud pumps?

Using low-quality counterfeit spares poses significant risks: 1. Reduced pump performance: Counterfeit spares often do not meet technical specifications, leading to reduced pump pressure, flow, and volumetric efficiency, which affects drilling progress. 2. Shortened service life: Inferior materials and craftsmanship result in extremely short service life of counterfeit spares, increasing maintenance frequency and costs. 3. Core component damage: Mismatched dimensions or poor performance of counterfeit spares may cause damage to core components such as shafts and gears, leading to costly repairs. 4. Safety hazards: Sudden failure of key spares (e.g., bearings, fasteners) during pump operation may cause equipment damage and even threaten the safety of operators. It is recommended to purchase genuine or certified spares.