XQ140/12YA Power Tongs Parts Maintenance

1

Core Shaft

12AZ-46

40CrNiMoA Alloy Steel

1. Long-term torque transmission leads to fatigue wear; 2. Contamination by drilling fluid causes corrosion and wear

1. Regularly clean and apply high-temperature resistant lubricating grease; 2. Check the radial runout regularly, and replace if exceeding 0.05mm

2

Pinion Spring

12AY-1.8

60Si2Mn High Elasticity Steel

1. Repeated compression and rebound lead to elastic fatigue; 2. High-temperature environment reduces material toughness

1. Avoid overloading the tongs beyond the rated torque; 2. Check the spring deformation regularly, and replace if the free length changes by more than 5%

3

Pin (B12*45)

12AZ-208

35CrMo Alloy Steel

1. Shear force during torque transmission; 2. Loosening leads to impact wear

1. Ensure proper tightening torque when installing, and use locking washers; 2. Inspect for cracks monthly using magnetic particle testing

4

Pin (B10*40)

12AZ-207

35CrMo Alloy Steel

1. Shear force during torque transmission; 2. Corrosion caused by inadequate sealing

1. Replace the sealing ring regularly to prevent drilling fluid intrusion; 2. Avoid violent impact during assembly and disassembly

5

Pin (20*70)

12AY-1.2

35CrMo Alloy Steel

1. High torque causes stress concentration and fracture; 2. Wear due to relative movement with mating parts

1. Match the mating parts strictly according to the dimensional tolerance requirements; 2. Regularly check the fit clearance, and replace if exceeding 0.1mm

6

Pin

12AZ-118

35CrMo Alloy Steel

1. Fatigue wear from long-term dynamic load; 2. Abrasion caused by foreign particles

1. Clean the installation position thoroughly before assembly; 2. Conduct periodic non-destructive testing to detect hidden cracks

7

Rear Seat

12AZ-29

QT450-10 Ductile Iron

1. Impact load during pipe making-up/breaking-out; 2. Wear due to contact with moving parts

1. Check the surface for pits and scratches regularly; 2. Adjust the contact pressure with moving parts to avoid excessive pressure

8

Part

12AZ-30

QT450-10 Ductile Iron

1. Corrosion from harsh oilfield environment; 2. Fatigue damage from cyclic load

1. Apply anti-corrosion coating regularly; 2. Avoid operating the tongs under extreme temperature conditions

9

Rear Joint

12AZ-217.2

40Cr Alloy Steel

1. Torsional fatigue during torque transmission; 2. Wear of the joint surface due to relative rotation

1. Regularly apply molybdenum disulfide lubricant to reduce friction; 2. Check the torque transmission stability, and eliminate abnormal vibration in time

10

Rear Joint

12AZ-217.1

40Cr Alloy Steel

1. Torsional fatigue during torque transmission; 2. Corrosion caused by drilling fluid infiltration

1. Strengthen the sealing of the joint to prevent fluid intrusion; 2. Check the joint for looseness weekly and retighten if necessary

11

Part

12AY-1.10

40Cr Alloy Steel

1. Wear due to long-term contact with hard particles; 2. Fatigue fracture under cyclic load

1. Install a filter to prevent hard particles from entering the system; 2. Regularly check the part for deformation

12

Copper Washer (14*2)

12AZ-214

H62 Brass

1. Deformation due to excessive tightening torque; 2. Corrosion from chemical substances in drilling fluid

1. Tighten according to the specified torque to avoid over-compression; 2. Replace the washer immediately if any corrosion or deformation is found

13

Pipe (φ6*1.5)

12AB-54.1

304 Stainless Steel

1. Wear due to friction with other parts; 2. Corrosion from external environment

1. Install protective sleeves at the contact points with other parts; 2. Regularly inspect the pipe for leakage and corrosion

14

Valve

12AZ-269

40Cr + Nitriding Treatment

1. Wear of the valve core due to frequent switching; 2. Blockage caused by impurity accumulation

1. Regularly clean the valve core and the flow channel; 2. Avoid rapid switching of the valve to reduce impact on the valve core

15

Handle

12AZ-241

QT500-7 Ductile Iron

1. Impact damage during operation; 2. Fatigue fracture at the root due to improper force application

1. Operate the handle smoothly without violent impact; 2. Check the root of the handle for cracks regularly

16

Handle

12AZ-232

QT500-7 Ductile Iron

1. Impact damage during operation; 2. Wear of the handle surface due to long-term use

1. Install a rubber sleeve on the handle to reduce impact; 2. Regularly check the connection between the handle and the valve body

17

Bearing

12AZ-45

GCr15 Bearing Steel

1. Lack of lubrication leads to dry friction; 2. Damage caused by foreign particles entering the bearing

1. Regularly add high-quality bearing lubricating oil; 2. Check the sealing ring of the bearing to prevent impurity intrusion

18

Bearing

12AZ-41

GCr15 Bearing Steel

1. Fatigue wear under high-speed rotation; 2. Corrosion caused by moisture intrusion

1. Control the rotation speed within the rated range; 2. Keep the bearing environment dry and clean

19

Bearing

12AZ-35

GCr15 Bearing Steel

1. Overload operation leads to bearing raceway damage; 2. Lubricating oil degradation causes poor lubrication

1. Avoid overloading the power tongs; 2. Replace the lubricating oil regularly according to the operation hours

20

Bearing

12AZ-17

GCr15 Bearing Steel

1. Wear due to misalignment during installation; 2. Impact damage during transportation and installation

1. Ensure accurate installation alignment; 2. Handle with care during transportation and installation

21

Part

12AZ-139

40CrNiMoA Alloy Steel

1. Torsional fatigue during long-term operation; 2. Corrosion from harsh oilfield environment

1. Regularly inspect the part for fatigue cracks; 2. Apply anti-corrosion treatment annually

22

Part

12AZ-130

40CrNiMoA Alloy Steel

1. Wear due to relative movement with other parts; 2. Fatigue damage under cyclic load

1. Regularly apply lubricating grease to reduce friction; 2. Check the part for dimensional changes regularly

23

Part

12AB-71

304 Stainless Steel

1. Corrosion from chemical substances in drilling fluid; 2. Wear due to contact with hard particles

1. Regularly clean the part to remove chemical residues; 2. Install a protective filter in the system

24

Screw (M10*1)

12AZ-8

304 Stainless Steel

1. Thread wear due to frequent disassembly; 2. Corrosion leads to thread seizure

1. Use a torque wrench for disassembly and assembly to avoid thread damage; 2. Apply anti-seize agent to the thread before installation

25

Part

12AZ-203

QT450-10 Ductile Iron

1. Impact load during operation; 2. Corrosion from external environment

1. Avoid violent operation of the power tongs; 2. Regularly inspect the part for corrosion and deformation

26

Part

12AZ-128

40Cr Alloy Steel

1. Fatigue wear under long-term dynamic load; 2. Wear due to inadequate lubrication

1. Regularly add lubricating oil; 2. Check the part for fatigue cracks using ultrasonic testing

27

Part

12AB-104

304 Stainless Steel

1. Corrosion from moisture and chemical substances; 2. Wear due to friction with other parts

1. Keep the part dry and clean; 2. Install wear-resistant gaskets at the contact points

28

Part (6*18)

12AZ-108

35CrMo Alloy Steel

1. Shear force during operation; 2. Fatigue fracture under cyclic load

1. Ensure the part is installed correctly to avoid uneven force; 2. Regularly check the part for cracks

29

Part (5*20)

12AZ-58

35CrMo Alloy Steel

1. Wear due to relative movement; 2. Corrosion caused by drilling fluid intrusion

1. Regularly apply lubricating grease; 2. Strengthen the sealing to prevent fluid intrusion

30

Part

12AB-106

304 Stainless Steel

1. Corrosion from harsh environment; 2. Wear due to impurity accumulation

1. Regularly clean the part; 2. Apply anti-corrosion coating

31

Hydraulic Motor

12AZ-73

40Cr + Cast Iron Housing

1. Wear of the rotor and stator due to long-term high-speed operation; 2. Damage to the seal leading to hydraulic oil leakage

1. Regularly check the hydraulic oil quality and replace it on schedule; 2. Inspect the seal for aging and replace it in time

32

Part

12AY-1

40CrNiMoA Alloy Steel

1. Torsional fatigue during torque transmission; 2. Wear due to contact with hard particles

1. Avoid overloading the power tongs; 2. Install a filter to prevent impurities from entering

33

Inserts (93-86)

12AZ-107.7

WC-Co Cemented Carbide

1. Wear due to friction with pipe threads; 2. Impact damage during pipe clamping

1. Ensure the clamping force is within the specified range; 2. Check the insert surface for wear regularly, and replace if the wear amount exceeds 1mm

34

Inserts (78)

12AZ-107.9

WC-Co Cemented Carbide

1. Wear due to friction with pipe threads; 2. Cracking due to uneven stress

1. Check the clamping alignment to ensure uniform stress; 2. Replace inserts in sets to avoid uneven wear

35

Inserts (73-70)

12AZ-107.8

WC-Co Cemented Carbide

1. Wear due to long-term pipe clamping; 2. Damage caused by foreign particles between the insert and the pipe

1. Clean the pipe surface before clamping; 2. Regularly inspect the insert for cracks and chips

36

Inserts (60)

12AZ-107.10

WC-Co Cemented Carbide

1. Wear due to friction with pipe threads; 2. Deformation due to excessive clamping force

1. Strictly control the clamping force; 2. Regularly measure the insert dimensions to detect deformation

37

Inserts (143-138)

12AZ-107*⑴

WC-Co Cemented Carbide

1. Wear due to high torque pipe making-up/breaking-out; 2. Corrosion from drilling fluid

1. Apply anti-corrosion agent to the insert surface; 2. Check the insert wear status after each shift

38

Inserts (127-122)

12AZ-107*⑴

WC-Co Cemented Carbide

1. Wear due to friction with pipe threads; 2. Impact damage during pipe handling

1. Handle pipes carefully to avoid impacting the inserts; 2. Replace worn inserts promptly

39

Inserts (121-116)

12AZ-107.4

WC-Co Cemented Carbide

1. Wear due to long-term use; 2. Stress concentration leading to cracking

1. Regularly inspect the insert for stress cracks; 2. Ensure uniform force distribution during clamping

40

Inserts (114-109)

12AZ-107*⑴

WC-Co Cemented Carbide

1. Wear due to friction with pipe threads; 2. Damage caused by improper pipe alignment

1. Align the pipe correctly before clamping; 2. Check the insert for wear and replace if necessary

41

Part

12AZ-212

40Cr Alloy Steel

1. Fatigue wear under cyclic load; 2. Corrosion from drilling fluid

1. Regularly clean and inspect the part; 2. Apply anti-corrosion lubricating grease

42

Part

XYQ12.Z-01.02A

QT500-7 Ductile Iron

1. Impact damage during operation; 2. Wear due to contact with moving parts

1. Operate the power tongs smoothly; 2. Regularly check the contact surface for wear

43

XQ140/12YA Power Tongs Assembly

XQ140/12YA

Mixed Materials (Alloy Steel, Ductile Iron, Stainless Steel)

1. Wear of multiple parts due to long-term coordinated operation; 2. System failure caused by mismatched replacement parts

1. Conduct regular comprehensive maintenance of the tongs; 2. Use genuine matching parts for replacement

44

XQ140/12YA & XQY12A Power Tongs Common Part

XQ140/12YA, XQY12A

40CrNiMoA Alloy Steel

1. Fatigue wear under dynamic load; 2. Corrosion from harsh oilfield environment

1. Regularly inspect the part for fatigue cracks; 2. Apply anti-corrosion treatment regularly

1

TQ340-35Y Power Tongs Core Part

TQ340-35Y

42CrMo Alloy Steel

1. High torque causes stress concentration and fatigue fracture; 2. Wear due to friction with mating parts under heavy load

1. Strictly operate within the rated torque range; 2. Regularly check the part for stress concentration and conduct ultrasonic testing

2

TQ340-35Y Power Tongs Part

TQ340, 35Y, TQ35Y.300-05

42CrMo Alloy Steel

1. Impact load during high-torque operation; 2. Corrosion caused by drilling fluid infiltration

1. Avoid sudden load increase during operation; 2. Strengthen the sealing of the part to prevent fluid intrusion

1

Roller

B6-29

GCr15 Bearing Steel

1. Wear due to high-speed rotation and friction; 2. Damage caused by foreign particles entering the roller

1. Regularly add lubricating oil to reduce friction; 2. Install a protective cover to prevent impurity intrusion

2

Part

B6-21

35CrMo Alloy Steel

1. Fatigue wear under cyclic load; 2. Wear due to relative movement with other parts

1. Regularly check the part for fatigue cracks; 2. Apply lubricating grease to the contact surface

3

Part (12)

B6-23

35CrMo Alloy Steel

1. Shear force during operation; 2. Corrosion from drilling fluid

1. Ensure the part is installed correctly to avoid uneven force; 2. Regularly clean the part to remove corrosion

4

Part

B6-24

QT450-10 Ductile Iron

1. Impact damage during operation; 2. Wear of the contact surface

1. Operate the tongs smoothly without violent impact; 2. Check the contact surface for wear regularly

5

Part

B6-25

QT450-10 Ductile Iron

1. Corrosion from external environment; 2. Fatigue damage under cyclic load

1. Apply anti-corrosion coating regularly; 2. Regularly inspect the part for deformation

6

Part

B6-6

304 Stainless Steel

1. Corrosion from chemical substances in drilling fluid; 2. Wear due to friction with other parts

1. Regularly clean the part to remove chemical residues; 2. Install wear-resistant gaskets

7

Part

B6-1

304 Stainless Steel

1. Corrosion from moisture and impurities; 2. Wear due to long-term use

1. Keep the part dry and clean; 2. Replace the part if the wear amount exceeds the limit

8

Part

B6-64

40Cr Alloy Steel

1. Torsional fatigue during torque transmission; 2. Wear due to inadequate lubrication

1. Regularly add lubricating oil; 2. Check the part for fatigue cracks regularly

1

ZQ203-100 Power Tongs Part

ZQ203-100

40CrNiMoA Alloy Steel

1. Fatigue wear under long-term operation; 2. Corrosion from harsh working environment

1. Regularly inspect the part for fatigue cracks; 2. Apply anti-corrosion treatment according to the environment

2

XYQ3B Power Tongs Part

XYQ3B

QT500-7 Ductile Iron

1. Impact damage during operation; 2. Wear of the contact surface

1. Operate the equipment smoothly; 2. Check the contact surface for wear and replace worn parts in time

3

XYQ6G Power Tongs Part

XYQ6G

35CrMo Alloy Steel

1. Shear force during torque transmission; 2. Corrosion caused by fluid intrusion

1. Ensure the part is installed correctly to bear force evenly; 2. Strengthen the sealing to prevent fluid intrusion

4

XQ3F Power Tongs Part

XQ3F

304 Stainless Steel

1. Corrosion from chemical substances; 2. Wear due to friction with other parts

1. Regularly clean the part; 2. Apply lubricating grease to reduce friction

5

XYQ6B Power Tongs Part

XYQ6B

40Cr Alloy Steel

1. Torsional fatigue during operation; 2. Wear due to impurity accumulation

1. Avoid overloading the equipment; 2. Install a filter to prevent impurities from entering

6

XQ89/3YC Power Tongs Part

XQ89/3YC

42CrMo Alloy Steel

1. High load causes stress concentration and fracture; 2. Wear due to high-speed rotation

1. Operate within the rated load range; 2. Regularly check the part for stress concentration