XQ140/12YA GCr15 Rollers Wear Resistance

1

Piston Rod

12AY-1.13

40CrNiMoA Alloy Steel (Quenched & Tempered + Hard Chrome Plating)

1. Abrasive wear from contaminated hydraulic oil; 2. Bending fatigue from uneven load distribution

1. Replace hydraulic oil every 500 operating hours and install high-efficiency filters; 2. Check rod straightness monthly (tolerance ±0.01mm) and align components per manual

2

General Component

12AZ-92

35CrMo Alloy Steel

1. Torsional fatigue from cyclic torque transmission; 2. Corrosion from drilling fluid intrusion

1. Inspect for micro-cracks monthly via magnetic particle testing; 2. Lubricate with corrosion-resistant grease (NLGI Grade 2) every 150 operating hours

3

General Component

12AH-01

QT500-10 Ductile Iron

1. Impact damage from sudden pipe movement; 2. Wear from contact with moving components

1. Install rubber bumpers on component surfaces; 2. Apply molybdenum disulfide lubricant to contact areas

4

General Component

XQY12A

40CrNiMoA Alloy Steel

1. Fatigue cracking from cyclic stress; 2. Corrosion from drilling fluid splashing

1. Conduct non-destructive testing every 3 months; 2. Clean and dry component surfaces weekly

5

General Component

12AH-02

304 Stainless Steel

1. Pitting corrosion from saltwater in offshore operations; 2. Wear from abrasive particles

1. Rinse with fresh water after offshore use; 2. Install particle filters in fluid lines

6

Spring

12AH-04

60Si2Mn High-Elasticity Steel

1. Elastic fatigue from repeated compression cycles; 2. Stress corrosion cracking in high-humidity environments

1. Replace springs proactively every 10,000 compression cycles; 2. Apply anti-corrosion oil (ISO VG 32) after each washdown

7

General Component

12AH-03

35CrMo Alloy Steel

1. Shear failure from uneven load distribution; 2. Wear from contaminated lubricant

1. Ensure even load bearing during installation; 2. Replace lubricant every 300 operating hours

8

General Component

12AB-19

Q355B Carbon Steel

1. Corrosion from atmospheric moisture; 2. Weld fatigue from vibration (if welded)

1. Apply anti-corrosion paint (epoxy primer + polyurethane topcoat) annually; 2. Inspect weld seams monthly for cracks

9

General Component

12AZ-133

304 Stainless Steel

1. Corrosion from chemical drilling fluid additives; 2. Wear from cyclic vibration

1. Test fluid additives for compatibility quarterly; 2. Install vibration dampeners

10

General Component

12AZ-135

35CrMo Alloy Steel

1. Abrasive wear from debris in fluid; 2. Fatigue cracking from cyclic stress

1. Install debris filters in fluid lines; 2. Conduct ultrasonic testing every 6 months

11

Roller

12AZ-132

GCr15 Bearing Steel (Hardened HRC 60-62)

1. Abrasive wear from contaminated lubricant; 2. Chipping from impact with foreign debris

1. Use clean, high-quality lubricant (ISO VG 22); 2. Install protective guards to prevent debris entry

12

Roller

12AZ-119

GCr15 Bearing Steel (Hardened HRC 60-62)

1. Fatigue wear from high-speed rotation; 2. Corrosion from moisture intrusion

1. Monitor rotational speed (limit to 1500 rpm); 2. Ensure seals are intact to prevent moisture entry

13

Roller

12AB-72

GCr15 Bearing Steel (Hardened HRC 60-62)

1. Wear from uneven contact with mating components; 2. Corrosion from drilling fluid splashing

1. Ensure proper alignment with mating components; 2. Clean rollers weekly and reapply lubricant

14

Roller Needle (φ4*25.8)

12AZ-11

GCr15 Bearing Steel

1. Abrasive wear from contaminated lubricant; 2. Bending from uneven load

1. Replace lubricant and filters regularly; 2. Ensure uniform load distribution on the needle assembly

15

Roller Shaft

12AZ-112

40Cr Alloy Steel (Quenched & Tempered)

1. Torsional fatigue from torque transmission; 2. Wear from roller rotation

1. Inspect for fatigue cracks monthly; 2. Apply anti-wear lubricant to shaft surfaces before assembly

16

Roller Shaft

12AB-27

40Cr Alloy Steel (Quenched & Tempered)

1. Corrosion from drilling fluid; 2. Wear from misalignment with rollers

1. Apply anti-corrosion grease to shaft surfaces; 2. Align shaft and rollers strictly per assembly manual

17

General Component

12AZ-114

QT500-10 Ductile Iron

1. Thermal stress cracking from high-temperature wells; 2. Wear from fluid splashing

1. Maintain operating temperature below 120°C; 2. Clean surface weekly to remove fluid residues

18

General Component

12AB-25

304 Stainless Steel

1. Pitting corrosion from saltwater; 2. Wear from abrasive particles

1. Rinse with fresh water after offshore use; 2. Install high-efficiency filters in fluid systems

19

Pin (φ6)

12AZ-5

35CrMo Alloy Steel

1. Shear failure from uneven load; 2. Corrosion from moisture intrusion

1. Ensure proper fit and load distribution; 2. Seal pin holes to prevent moisture entry

20

Pin (φ5)

12AZ-69

35CrMo Alloy Steel

1. Wear from relative movement with mating components; 2. Corrosion from drilling fluid

1. Apply lubricant to pin surfaces; 2. Install seals to prevent fluid intrusion

21

General Component

12AY-1.12

40CrNiMoA Alloy Steel

1. Torsional fatigue from cyclic torque; 2. Corrosion from H₂S in sour wells

1. Operate within rated torque range; 2. Use NACE MR0175-compliant coating for sour service

22

General Component

12AZ-70

35CrMo Alloy Steel

1. Wear from contact with moving components; 2. Fatigue cracking from cyclic stress

1. Lubricate contact surfaces every 200 operating hours; 2. Conduct non-destructive testing every 3 months

23

General Component

12AZ-59

QT450-10 Ductile Iron

1. Impact damage from installation; 2. Corrosion from atmospheric moisture

1. Use specialized installation tools to avoid forced assembly; 2. Apply anti-corrosion paint annually

24

Bolt (M8*12)

12AZ-113

Alloy Steel (8.8 Grade)

1. Thread stripping from over-tightening; 2. Fatigue failure from cyclic vibration

1. Tighten to 25 N·m with torque wrench; 2. Use lock washers to prevent loosening

25

Valve Core

12AZ-242

GCr15 Bearing Steel (Hardened HRC 60-62)

1. Abrasive wear from contaminated hydraulic oil; 2. Deformation from high-temperature operation

1. Maintain hydraulic oil cleanliness (NAS 8 class or higher); 2. Monitor system temperature (limit to 100°C)

26

General Component

12AZ-138

304 Stainless Steel

1. Corrosion from chemical drilling fluid additives; 2. Wear from vibration

1. Test fluid additives for compatibility quarterly; 2. Install vibration dampeners

27

General Component

12AZ-142

35CrMo Alloy Steel

1. Shear failure from uneven load distribution; 2. Wear from contaminated lubricant

1. Ensure even load bearing during installation; 2. Replace lubricant every 300 operating hours

28

General Component

12AZ-137

QT500-10 Ductile Iron

1. Impact damage from pipe handling; 2. Wear from fluid splashing

1. Install protective guards; 2. Clean surface weekly to remove fluid residues

29

General Component

12AZ-140

40Cr Alloy Steel

1. Torsional fatigue from torque transmission; 2. Corrosion from drilling fluid

1. Inspect for fatigue cracks monthly; 2. Apply anti-corrosion grease every 150 operating hours

30

General Component

12AZ-131

304 Stainless Steel

1. Pitting corrosion from saltwater; 2. Wear from abrasive particles

1. Rinse with fresh water after offshore use; 2. Install particle filters in fluid lines

31

General Component

12AB-32

35CrMo Alloy Steel

1. Wear from relative movement with mating components; 2. Fatigue cracking from cyclic stress

1. Apply molybdenum disulfide lubricant to contact surfaces; 2. Conduct non-destructive testing every 3 months

32

General Component

12AB-21

QT450-10 Ductile Iron

1. Thermal stress cracking from high-temperature wells; 2. Corrosion from fluid splashing

1. Maintain operating temperature below 120°C; 2. Clean and dry weekly

33

General Component

12AB-80

Q355B Carbon Steel

1. Corrosion from atmospheric moisture; 2. Wear from debris

1. Apply anti-corrosion paint annually; 2. Install debris shields

34

General Component

12AB-1

40CrNiMoA Alloy Steel

1. Torsional fatigue from cyclic torque; 2. Corrosion from H₂S in sour wells

1. Operate within rated torque range; 2. Use NACE MR0175-compliant coating

35

General Component

12AB-12

35CrMo Alloy Steel

1. Shear failure from uneven load; 2. Wear from contaminated lubricant

1. Ensure even load bearing during installation; 2. Replace lubricant and filters regularly

36

General Component

12AB-5

QT500-10 Ductile Iron

1. Impact damage from sudden pipe movement; 2. Wear from contact with moving components

1. Install rubber bumpers; 2. Lubricate contact surfaces every 200 operating hours

37

General Component

12AZ-93

304 Stainless Steel

1. Corrosion from chemical drilling fluid additives; 2. Wear from vibration

1. Test fluid additives for compatibility quarterly; 2. Install vibration dampeners

38

O Ring (50*3.5)

12AZ-124

Nitrile Rubber (NBR 70 Shore A)

1. Elastic fatigue from repeated compression cycles; 2. Swelling and degradation from hydraulic oil contamination

1. Replace O-rings every 600 operating hours proactively; 2. Ensure hydraulic oil is compatible with NBR and maintain cleanliness

1

General Component

B6-15

35CrMo Alloy Steel

1. Wear from relative movement in compact assembly; 2. Corrosion from drilling fluid pooling in tight spaces

1. Use precision lubrication tools for confined spaces; 2. Drill small drainage holes to prevent fluid accumulation

2

General Component

B6-11

QT450-10 Ductile Iron

1. Impact damage from installation in tight spaces; 2. Fatigue cracking from cyclic stress

1. Use specialized installation tools to avoid forced assembly; 2. Conduct ultrasonic testing every 6 months

3

General Component

B6-8

304 Stainless Steel

1. Corrosion from chemical drilling fluid additives; 2. Wear from vibration

1. Test fluid additives for compatibility quarterly; 2. Install vibration dampeners

4

General Component

B6-9

35CrMo Alloy Steel

1. Shear failure from uneven load distribution; 2. Wear from contaminated lubricant

1. Ensure even load bearing during installation; 2. Replace lubricant every 300 operating hours

5

General Component

B6-12

QT450-10 Ductile Iron

1. Thermal stress cracking from high-temperature wells; 2. Wear from fluid splashing

1. Maintain operating temperature below 120°C; 2. Clean surface weekly

6

Jaw

XYQ6B.B-14(1) B6-31

WC-Co Cemented Carbide + Steel Base

1. Wear from contact with pipe surfaces during clamping; 2. Chipping from sudden impact with uneven pipe walls

1. Inspect jaw surface for wear monthly (replace if wear depth exceeds 0.5mm); 2. Ensure pipe surfaces are clean and free of burrs before clamping

1

Pin

0101-03M

35CrMo Alloy Steel (Carburized Surface)

1. Wear from relative movement with mating components; 2. Corrosion from drilling fluid intrusion

1. Apply anti-wear lubricant to pin surfaces; 2. Install seals to prevent fluid intrusion

1

Dies

XYQ3C.Z.1-9

WC-Co Cemented Carbide + Steel Base

1. Wear from contact with rough pipe surfaces; 2. Chipping from sudden impact with pipe burrs

1. Inspect die surface for wear monthly (replace if wear depth exceeds 0.8mm); 2. Remove pipe burrs before clamping

1

TQ340-35Y Replacement Part

TQ340-35Y

42CrMo Alloy Steel / 304 Stainless Steel

1. Wear from high-torque operation; 2. Corrosion from H₂S in sour wells

1. Operate within rated torque range; 2. Use NACE MR0175-compliant materials and coatings

2

XYQ3B Replacement Part

XYQ3B

35CrMo Alloy Steel

1. Torsional fatigue from cyclic torque; 2. Corrosion from drilling fluid

1. Inspect for fatigue cracks monthly; 2. Apply anti-corrosion grease every 150 operating hours

3

XYQ6G Replacement Part

XYQ6G

304 Stainless Steel

1. Pitting corrosion from saltwater; 2. Wear from abrasive particles

1. Rinse with fresh water after offshore use; 2. Install particle filters in fluid lines

4

XQ3F Replacement Part

XQ3F

Alloy Steel (8.8 Grade)

1. Thread stripping from over-tightening; 2. Fatigue failure from cyclic vibration

1. Tighten to specified torque with torque wrench; 2. Use lock washers to prevent loosening

5

XYQ6B Replacement Part

XYQ6B

QT500-10 Ductile Iron

1. Impact damage from pipe handling; 2. Wear from fluid splashing

1. Install protective guards; 2. Clean surface weekly to remove fluid residues