YM-16Ⅱ Hydraulic Cathead Supplementary Parts Catalog

1

Hydraulic Cylinder

YM16-ⅡA-01.00

Alloy Steel 42CrMo (Cylinder Body, Forged & Quenched) + Chrome-Plated Alloy Steel (Piston Rod) + Cast Iron (Piston)

1. Hydraulic oil leakage due to seal ring aging; 2. Piston rod surface scratches from dust and drilling fluid ingress (scratch depth >0.1mm).

1. Replace seal rings every 6 months; conduct pressure testing (1.2 times rated pressure) annually to check for leakage; 2. Install high-precision dust-proof rings (IP54 protection level); polish minor scratches (≤0.1mm) with abrasive paper.

2

Cylinder body

YM-16Ⅱ-09.05

Alloy Steel 42CrMo (Precision Machined, Internal Honing)

1. Internal wall wear from long-term piston movement (clearance >0.2mm); 2. Corrosion of internal surface from hydraulic oil moisture (moisture content >0.1%).

1. Inspect internal clearance quarterly; re-hone if exceeding 0.2mm; 2. Use hydraulic oil dehydrators to maintain moisture content ≤0.1%; replace hydraulic oil every 12 months.

3

Piston rod

YM16-ⅡA-01.01

Alloy Steel 40Cr (Chrome-Plated, Hardness HRC60-65)

1. Chrome plating peeling due to impact during operation; 2. Thermal fatigue from extreme temperature fluctuations (-20℃ to 80℃) in outdoor drilling.

1. Install anti-collision buffers at the rod end; avoid direct impact; 2. Inspect chrome plating for peeling monthly; re-plate if damaged area exceeds 5%.

4

Piston

YM-16Ⅱ-09.07

Alloy Cast Iron QT500-7 (High-Strength, Wear-Resistant)

1. Abrasive wear from hydraulic oil contamination (particle size ≥10μm); 2. Deformation from high-pressure operation (pressure >31.5MPa).

1. Use hydraulic oil filters with 5μm precision; clean the hydraulic system quarterly; 2. Strictly control system pressure ≤31.5MPa; inspect piston deformation annually.

5

Cylinder bottom

YM-16Ⅱ-09.10

Alloy Steel 42CrMo (Welded & Heat-Treated)

1. Weld joint fatigue cracking from cyclic pressure impact; 2. Corrosion of external surface in high-humidity environments.

1. Conduct ultrasonic testing (UT) of weld joints every 6 months; 2. Apply marine-grade anti-corrosion coating annually; inspect for rust spots monthly.

6

Guide linder

YM-16Ⅱ-09.04

Alloy Steel 40Cr (Precision Machined, Surface Hardened)

1. Internal wall wear from piston rod guiding movement; 2. Jamming due to foreign debris ingress.

1. Lubricate with high-pressure anti-wear grease every 30 operating hours; 2. Clean the guide cylinder interior quarterly to remove debris.

1

Steel wire rope assy

YM16-ⅡB1-04.00

High-Strength Carbon Steel Wire (Galvanized, 6×19S+FC Structure)

1. Fatigue breaking of wires due to repeated bending (minimum bending radius <12×rope diameter); 2. Corrosion of galvanized layer in humid or saltwater environments.

1. Ensure bending radius ≥12×rope diameter; replace if the number of broken wires exceeds 6 in a 6d length (d=rope diameter); 2. Apply anti-corrosion grease monthly; store in a dry environment when not in use.

2

Wedge 27

YM-16Ⅱ-10

Alloy Steel 45# (Quenched & Tempered, Surface Hardened)

1. Abrasive wear of wedge surface from frictional locking with wire rope; 2. Deformation from high-pressure locking (locking pressure >25MPa).

1. Inspect wedge surface wear monthly; replace if wear depth exceeds 0.2mm; 2. Control locking pressure between 15-25MPa; use a pressure gauge for real-time monitoring.

3

Big spring seat

YM16-ⅡB1-04.01

Alloy Steel 40Cr (Forged & Machined)

1. Wear of spring mounting surface from cyclic spring compression; 2. Fatigue cracking from repeated impact loads.

1. Lubricate the mounting surface with anti-wear grease every 50 operating hours; 2. Conduct magnetic particle testing (MPT) annually to detect fatigue cracks.

4

Spring adapter seat

YM-16Ⅱ1-05

Alloy Steel 40Cr (Precision Machined)

1. Wear from lateral force during spring operation; 2. Corrosion of internal surface from lubricating oil moisture.

1. Ensure spring alignment during installation to avoid lateral force; 2. Monitor lubricating oil moisture content; replace oil if exceeding 0.1%.

5

Spring

YM-16Ⅱ1-13

Spring Steel 60Si2Mn (Heat-Treated, High-Elasticity)

1. Fatigue deformation from long-term cyclic compression (compression cycles >10,000 times); 2. Thermal aging from high-temperature environments (temperature >80℃).

1. Inspect spring deformation monthly; replace if permanent deformation exceeds 2%; 2. Avoid operation in environments above 80℃; install a cooling system if necessary.

6

Spring Seat

YM-16Ⅱ1-06

Alloy Steel 40Cr (Machined & Surface Hardened)

1. Wear of contact surface with spring; 2. Loosening of mounting fasteners due to vibration (vibration frequency 5-25Hz).

1. Replace spring seats every 12 months; 2. Re-torque mounting fasteners monthly using a calibrated torque wrench.

7

Wire clip

YM-16Ⅱ1-07

Alloy Steel 45# (Heat-Treated)

1. Wear of wire rope contact surface; 2. Deformation from over-tightening.

1. Inspect contact surface wear monthly; replace if wear is severe; 2. Tighten according to rated torque; avoid over-tightening to prevent wire rope damage.

8

Wire clip 28KT

GB5976-86

Carbon Steel Q235B (Zinc-Plated)

1. Corrosion of zinc plating in humid environments; 2. Fatigue fracture from vibration.

1. Inspect zinc plating for damage monthly; touch up with anti-corrosion paint; 2. Replace wire clips every 6 months in high-vibration scenarios.

9

Bolt M8x25

GB70-86

Carbon Steel 8.8 Grade (Zinc-Plated, Heat-Treated)

1. Thread wear from repeated assembly; 2. Fatigue fracture from cyclic vibration.

1. Use thread lock compound during assembly; limit disassembly times to ≤20 times; 2. Install spring gaskets to absorb vibration; inspect for cracks quarterly.

10

Nut M22

GB6170-86

Carbon Steel 8.8 Grade (Zinc-Plated)

1. Thread wear from high-torque tightening; 2. Corrosion in drilling fluid environments.

1. Tighten with a torque wrench (follow rated torque values); 2. Apply anti-corrosion grease to threads before installation; clean after use.

11

Spring gasket 8

GB93-87

Spring Steel 65Mn (Heat-Treated)

1. Fatigue deformation from repeated compression (compression cycles >5000 times); 2. Corrosion of surface oxide layer.

1. Replace spring gaskets every 6 months; 2. Apply anti-rust oil before installation; store in a dry environment.

12

Retainer

YM-16Ⅱ-09.01

Carbon Steel Q355B (Zinc-Plated)

1. Deformation from impact during maintenance; 2. Corrosion of surface.

1. Handle with care during maintenance to avoid impact; 2. Apply anti-corrosion coating annually; inspect for rust monthly.

13

Hole wedge

YM-16Ⅱ-09.02

Alloy Steel 45# (Quenched & Tempered)

1. Wear of wedge surface from frictional locking; 2. Cracking from over-locking force.

1. Inspect wedge surface wear monthly; replace if wear depth exceeds 0.2mm; 2. Control locking force within rated limits.

14

Axle wedge

YM-10-04-09

Alloy Steel 45# (Quenched & Tempered)

1. Wear from rotational friction with axle; 2. Corrosion in humid environments.

1. Lubricate with anti-wear grease monthly; 2. Apply anti-corrosion coating annually.

15

Wedge cap

YM-10-04-15

Carbon Steel Q235B (Zinc-Plated)

1. Corrosion of zinc plating; 2. Deformation from impact.

1. Inspect zinc plating for damage monthly; touch up with anti-corrosion paint; 2. Install anti-collision buffers to avoid impact.

1

No-skeletal dust-proof ring d110

LJY07-89

Polyurethane (PU, High-Wear Resistant, Shore Hardness 75±5)

1. Wear from piston rod movement (sliding speed >0.5m/s); 2. Aging and cracking from long-term UV exposure in outdoor drilling.

1. Control piston rod sliding speed ≤0.5m/s; 2. Avoid direct sunlight; replace dust-proof rings every 6 months.

2

Axle spring gasket 140

GB894-86

Spring Steel 65Mn (Heat-Treated, Surface Phosphated)

1. Fatigue fracture from high-load compression; 2. Corrosion of phosphated layer in humid environments.

1. Replace spring gaskets every 6 months in high-load scenarios; 2. Apply anti-rust oil before installation; inspect for corrosion monthly.

3

O-ring 112x5.3

GB3452.1-92

Nitrile Rubber (NBR, Oil-Resistant, Shore Hardness 70±5)

1. Compression set from long-term installation (compression rate >30%); 2. Damage from hydraulic oil contamination (particle size ≥5μm).

1. Control compression rate between 15-25%; replace O-rings every 12 months; 2. Use hydraulic oil filters with 5μm precision; clean the installation area before assembly.

4

Axle YX Type sealing ring d110

LJY03-89

Polyurethane (PU, High-Pressure Resistant)

1. Wear from piston rod movement; 2. Extrusion damage from high pressure (pressure >31.5MPa).

1. Lubricate with hydraulic oil before installation; 2. Strictly control system pressure ≤31.5MPa; use backup rings for high-pressure positions.

5

O-ring 150x5.3

GB 3452.1-92

Nitrile Rubber (NBR, Oil-Resistant)

1. Aging and hardening from high-temperature hydraulic oil (temperature >80℃); 2. Corrosion from hydraulic oil additives.

1. Monitor hydraulic oil temperature; install a cooling system if exceeding 80℃; 2. Use hydraulic oil compatible with NBR rubber; avoid mixing different additives.

6

Guide belt 15x2.5x353

KD22-90

Polyoxymethylene (POM, Self-Lubricating, Wear-Resistant)

1. Abrasive wear from piston movement; 2. Deformation from high temperature (temperature >90℃).

1. Replace guide belts every 12 months; 2. Avoid operation in environments above 90℃; inspect for deformation quarterly.

7

Hole YX ring D160

LYJ02-89

Polyurethane (PU, High-Elasticity)

1. Wear from piston movement; 2. Damage from foreign debris ingress.

1. Clean the cylinder interior before installation; 2. Replace YX rings every 6 months; inspect for damage monthly.

8

O-ring 69-5.3

GB3452.1-92

Nitrile Rubber (NBR, Oil-Resistant)

1. Fatigue cracking from cyclic pressure changes (pressure fluctuation >10MPa); 2. Aging from long-term storage (storage time >2 years).

1. Inspect for cracks monthly; replace if detected; 2. Store O-rings in a cool, dry environment; shelf life ≤2 years.

9

Axle spring gasket 80

GB894-86

Spring Steel 65Mn (Heat-Treated, Surface Phosphated)

1. Fatigue deformation from repeated compression; 2. Corrosion of phosphated layer from drilling fluid splatter.

1. Replace spring gaskets every 6 months; 2. Clean regularly to remove drilling fluid residue; apply anti-rust oil.

10

Gasket

YM-16Ⅱ-09.03

Asbestos-Free Rubber (High-Temperature Resistant, Oil-Resistant)

1. Aging and leakage from high temperature; 2. Damage from improper installation (over-tightening).

1. Replace gaskets every 6 months in high-temperature environments; 2. Tighten according to rated torque; avoid over-tightening.

11

Gasket

YM-16Ⅱ-09.09

Asbestos-Free Rubber (Oil-Resistant)

1. Wear and leakage from hydraulic oil erosion; 2. Corrosion in humid environments.

1. Replace gaskets every 12 months; 2. Inspect for leakage monthly; clean the installation area.

12

Support ring

YM-16Ⅱ-09.08

Polyoxymethylene (POM, Self-Lubricating)

1. Wear from piston movement; 2. Deformation from high pressure.

1. Replace support rings every 12 months; 2. Control system pressure within rated limits; inspect for deformation quarterly.