BPMF BOP Control System Parts Catalog

1

Crank Shaft

9160200032

Alloy steel (42CrMo), quenched and tempered treatment, surface nitriding

1. Cyclic torque loading causes fatigue cracks on shaft journals; 2. Insufficient lubrication leads to abrasive wear between shaft and bearings.

1. Ensure sufficient lubrication with high-temperature anti-wear hydraulic oil; check oil level and quality regularly; 2. Inspect shaft surface for cracks and wear periodically; perform magnetic particle testing annually.

2

Connecting Rod

9160200028, 9161200009

Forged alloy steel (40Cr), heat-treated to HRC 28-32, precision machining

1. Reciprocating motion causes wear on pin holes and bushings; 2. Uneven load distribution leads to bending deformation.

1. Check the parallelism and perpendicularity of connecting rods regularly; correct or replace if deformed; 2. Lubricate pin holes with molybdenum disulfide grease every maintenance cycle.

3

Cross Head

9160200027

Alloy steel (35CrMo), surface hard chrome plating, precision grinding

1. Reciprocating friction with the cylinder causes wear on the outer surface; 2. Impact load during start-stop leads to internal stress concentration.

1. Ensure the cylinder inner wall is smooth and free of scratches; 2. Avoid rapid start-stop operations; maintain stable operation speed.

4

Crosshead Shaft

9160100021

Stainless steel (316L), heat-treated, precision machining

1. Rotational friction causes wear on the shaft surface; 2. Corrosion from moisture and hydraulic oil impurities.

1. Use hydraulic oil that meets the specified grade and keep it clean; 2. Apply anti-corrosion grease to the shaft surface during storage and maintenance.

5

Rod

9160200026

Alloy steel (45#), surface quenching and tempering, hard chrome plating

1. Axial load causes stretching deformation and thread wear; 2. Abrasive wear from contact with sealing components.

1. Check the rod for straightness and thread integrity regularly; 2. Avoid overloading the rod beyond its rated load capacity.

1

Gland

9160100010, 9160200038, 9160200041

Carbon steel (Q235) with galvanizing, or alloy steel (40Cr) for high-pressure applications

1. High-pressure extrusion causes deformation of the gland flange; 2. Corrosion from environmental moisture and oil impurities.

1. Tighten the gland bolts evenly to avoid uneven pressure; 2. Inspect the gland for corrosion and deformation regularly; touch up galvanizing if damaged.

2

Skeleton Sealing Ring

52X72X8 (5303930050), 25X47X7 (5303930020)

Nitrile butadiene rubber (NBR) with steel skeleton, oil-resistant and wear-resistant

1. High-temperature hydraulic oil causes rubber aging and hardening; 2. Friction with rotating components leads to lip wear.

1. Replace sealing rings every 6-12 months or when oil leakage is detected; 2. Ensure the mating surface of the rotating component is smooth and free of burrs.

3

Red Paper Gasket

9160200039, 9160100033

High-temperature resistant red fiber paper, with rubber coating

1. High-temperature and high-pressure environment causes gasket aging and brittleness; 2. Improper installation leads to gasket damage and leakage.

1. Replace gaskets every time the flange is disassembled; 2. Tighten the flange bolts evenly according to the specified torque.

4

Sealing Gasket

9160100047

PTFE-reinforced rubber, corrosion-resistant and high-pressure resistant

1. Chemical corrosion from hydraulic oil additives; 2. Excessive compression causes gasket deformation and loss of sealing performance.

1. Use hydraulic oil that is compatible with PTFE materials; 2. Control the compression amount within the specified range during installation.

5

Paper Gasket

9160100024

Imported high-density fiber paper, oil-resistant and heat-resistant

1. Moisture absorption causes gasket softening and loss of strength; 2. High-pressure impact leads to gasket rupture.

1. Store gaskets in a dry and ventilated environment; 2. Install a pressure relief valve upstream to avoid sudden pressure surges.

6

O Ring

30x2.65 (5303001130)

Fluororubber (FKM/Viton), high-temperature resistant (up to 200°C) and oil-resistant

1. High-temperature aging causes O-ring hardening and cracking; 2. Extrusion deformation from excessive groove clearance.

1. Check the O-ring groove size regularly to ensure it matches the O-ring; 2. Avoid exposing the O-ring to direct sunlight and high-temperature environments during storage.

7

Window for Oil Sign

9160200052

Toughened glass with aluminum alloy frame, sealed with NBR rubber

1. Impact from external debris causes glass breakage; 2. Sealing rubber aging leads to oil leakage.

1. Install a protective cover around the window to prevent impact; 2. Replace the sealing rubber every year to ensure sealing performance.

1

Hex End Bolt

M10X25 (4202000230)

Alloy steel (4.8 grade), galvanized for anti-corrosion

1. Vibration causes bolt loosening and thread wear; 2. Corrosion from environmental moisture and salt spray.

1. Use spring washers or lock nuts to enhance anti-loosening performance; 2. Tighten bolts according to the specified torque; recheck tightness regularly.

2

Stud Bolt

4202100030

Alloy steel (8.8 grade), quenched and tempered, with anti-corrosion coating

1. Asymmetric load causes thread deformation and damage; 2. High-temperature environment leads to material strength reduction.

1. Ensure the two ends of the stud bolt are evenly stressed during installation; 2. Avoid using stud bolts in environments exceeding their temperature rating.

3

Flat Washer Ring

12 (4205010060), 4205010060

Carbon steel (Q235), galvanized, with smooth surface

1. Pressure causes washer deformation and indentation; 2. Corrosion leads to washer thinning and loss of load-bearing capacity.

1. Select washers that match the bolt size and load capacity; 2. Replace washers if corrosion or deformation is detected.

4

Light Spring Washer

16 (4205030080)

65Mn spring steel, heat-treated, surface phosphating

1. Repeated compression causes spring fatigue and loss of elasticity; 2. Edge wear from friction with bolts and workpieces.

1. Do not reuse spring washers after disassembly; replace with new ones; 2. Avoid over-tightening bolts to prevent washer damage.

5

Spring Washer

10 (4205030050), 4205030060

65Mn spring steel, high elasticity, surface galvanized

1. Fatigue failure due to cyclic vibration; 2. Corrosion causes spring breakage.

1. Regularly inspect spring washers for elasticity and corrosion; replace if necessary; 2. Store washers in a dry environment to prevent rust.

6

Cross Grove Dish Top Screw

M6XM6 (4201012130)

Carbon steel (35#), surface nickel-plated, cross groove precision machining

1. Cross groove wear from screwdriver operation; 2. Loosening due to vibration.

1. Use a screwdriver that matches the cross groove size to avoid slipping; 2. Apply thread locking adhesive to the screw thread for anti-loosening.

7

Flange

9160100025, 9161100025

Carbon steel (Q235) or stainless steel (304), welded and machined

1. Welding seam fatigue cracking under cyclic load; 2. Corrosion from fluid medium and environment.

1. Inspect welding seams for cracks regularly using non-destructive testing; 2. Apply anti-corrosion paint to the flange surface and maintain it regularly.

8

Lock Nut

9160100020

Alloy steel (45#), with nylon locking ring, anti-loosening

1. Nylon ring aging and wear leads to loss of anti-loosening performance; 2. Thread wear from repeated assembly and disassembly.

1. Replace lock nuts if the nylon ring is damaged or aged; 2. Avoid excessive force during assembly and disassembly to protect threads.

9

Retaining Ring

9160100019

65Mn spring steel, heat-treated, surface phosphating

1. Elastic fatigue causes ring deformation and loss of retaining force; 2. Installation damage to the ring edge.

1. Use special installation tools to avoid damaging the retaining ring; 2. Inspect the ring for deformation and elasticity regularly.

10

Steel Wire Retaining Ring

9160900012

Stainless steel wire (304), high elasticity and corrosion resistance

1. Elastic fatigue from repeated expansion and contraction; 2. Wear from contact with mating components.

1. Do not over-expand the retaining ring beyond its elastic limit during installation; 2. Check the fitting groove for burrs before installation.

11

Elastic Retaining Ring

For HPLE D0=25 (4206022040), For rod D0=22 (4206020150)

65Mn spring steel, surface black oxide treatment, high elasticity

1. Radial load causes ring wear and deformation; 2. Corrosion from moisture and oil.

1. Ensure the retaining ring is fully seated in the groove during installation; 2. Apply anti-corrosion oil to the ring surface regularly.

12

Retaining Flat

9160100022

Carbon steel (Q235) with galvanizing, precision machining

1. Wear from friction with moving components; 2. Loosening of fixing bolts leads to position deviation.

1. Tighten the fixing bolts of the retaining flat regularly; 2. Check the flat surface for wear and replace if necessary.

13

Tension Bar Nut

9160100018

Alloy steel (40Cr), quenched and tempered, thread precision machining

1. Tensile load causes thread deformation and wear; 2. Corrosion leads to thread jamming.

1. Apply anti-seize agent to the thread before installation; 2. Check the nut for thread damage and corrosion regularly.

1

Cone Roller Bearing

2007116 (4301000040)

Bearing steel (GCr15), heat-treated to HRC 60-64, cage made of brass

1. Insufficient or contaminated lubricating grease causes abrasive wear; 2. Axial and radial loads exceed the rated capacity, leading to roller damage.

1. Fill with high-temperature anti-wear lubricating grease regularly; replace grease every 6 months; 2. Ensure the bearing operates within the rated load and speed range.

2

One Way Thrust Ball Bearing

4301000070

Bearing steel (GCr15), balls made of high-precision steel, cage made of steel plate

1. Thrust load causes ball and raceway wear; 2. Contaminants in lubricant lead to scratch damage.

1. Use clean lubricating oil that meets the requirements; 2. Install the bearing correctly to ensure the thrust direction is consistent with the load direction.

3

Bearing

4301000060

Bearing steel (GCr15SiMn), high precision, low noise

1. Vibration causes bearing raceway fatigue and peeling; 2. Improper installation leads to bearing inclination and uneven load.

1. Ensure the installation shaft and housing have high coaxiality; 2. Install a vibration absorber if the operating environment has strong vibration.

1

Spring

9160900010

65Mn spring steel, heat-treated, surface shot peening

1. Cyclic compression causes fatigue and breakage; 2. High-temperature environment leads to elastic modulus reduction and deformation.

1. Avoid over-compressing the spring beyond its elastic limit; 2. Inspect the spring for cracks and deformation regularly; replace if fatigue signs are found.

2

Big Spring

9161100006

50CrVA spring steel, high fatigue strength, surface phosphating

1. Large load cyclic compression causes fatigue damage; 2. Corrosion from moisture and oil leads to surface pitting.

1. Apply anti-corrosion grease to the spring surface regularly; 2. Check the spring's free length and elastic force periodically; replace if it deviates from the specified range.

3

Small Spring

9161100007

65Mn spring steel, precision coiling, surface galvanized

1. Fatigue failure due to high-frequency small-amplitude vibration; 2. Installation deviation causes uneven stress and deformation.

1. Ensure the spring is installed correctly without tilting; 2. Replace small springs every 12 months to prevent fatigue failure.

4

Spring Foundation

9161100008

Carbon steel (Q235) with galvanizing, precision machining

1. Wear from friction with the spring; 2. Loosening of fixing bolts leads to position deviation.

1. Tighten the fixing bolts of the spring foundation regularly; 2. Check the contact surface with the spring for wear and smoothness.

1

Valve Core

9161001000

Stainless steel (304), surface grinding and polishing, hard chrome plating

1. Friction with the valve sleeve causes wear and scratches; 2. Contaminants in hydraulic oil lead to valve core jamming.

1. Maintain hydraulic oil cleanliness (NAS 8 class or higher); replace oil filters regularly; 2. Avoid rapid and frequent switching of valves to reduce wear.

2

Steel Ball

4371010120

High-carbon chromium bearing steel (GCr15), precision grinding, surface hardening

1. Impact wear from valve opening and closing; 2. Corrosion from hydraulic oil additives.

1. Use hydraulic oil that is compatible with the steel ball material; 2. Check the steel ball for wear and deformation regularly; replace if necessary.

3

Air Bleeding Plug

9160100046

Stainless steel (316L), with sealing gasket, anti-corrosion

1. Thread wear from repeated opening and closing; 2. Sealing gasket aging leads to air leakage.

1. Open and close the plug gently to avoid thread damage; 2. Replace the sealing gasket every time the plug is disassembled.

1

Cylinder

QB21-80 (9160100014)

Alloy steel (45#), honing inside, surface nitriding

1. Friction with the plunger causes inner wall wear and scratches; 2. High-pressure hydraulic oil causes cylinder deformation.

1. Ensure the plunger surface is smooth and free of burrs; 2. Operate the pump within the rated pressure range to avoid cylinder deformation.

2

Plunger

QB21-80 (9160100015), 9161100024

Stainless steel (316L), surface hard chrome plating, precision grinding

1. Reciprocating friction causes wear of the chrome plating layer; 2. Contaminants in hydraulic oil lead to scratches on the plunger surface.

1. Use high-quality hydraulic oil and replace oil filters regularly; 2. Check the plunger surface for wear and scratches periodically; re-plate chrome if necessary.

3

Oil Inlet Plunger

9161200019

Alloy steel (2Cr13), surface polishing, corrosion-resistant

1. Wear from suction resistance and fluid impact; 2. Corrosion from moisture in the oil inlet.

1. Ensure the oil inlet is clean and free of impurities; 2. Drain moisture from the oil tank regularly to prevent corrosion.

4

Packing Pressing Cap

9160100017

Carbon steel (Q235) with galvanizing, internal thread precision machining

1. Thread wear from repeated adjustment; 2. Deformation from uneven pressure during packing compression.

1. Adjust the pressing cap evenly to ensure uniform packing compression; 2. Avoid over-tightening the cap to prevent packing damage and thread deformation.