CPTDC ZP275 Rotary Table Parts Classification

1

PINION Z22

ZP000016

20CrMnTi alloy steel with carburizing and quenching treatment (surface hardness HRC 58-62)

1. Abrasive wear of gear teeth caused by metal particles entering the meshing area during long-term high-torque transmission; 2. Fatigue pitting of tooth surface due to alternating load during frequent start-stop operations

1. Ensure the lubrication system operates normally, use gear oil complying with API GL-5 standard, and filter out metal particles in the oil regularly; 2. Avoid frequent emergency start-stop, and check gear meshing clearance (0.2-0.3mm) quarterly

2

PINION SHAFT

ZP000039, ZP000040

42CrMo alloy steel with quenching and tempering treatment (hardness HRC 28-32)

1. Bending deformation caused by uneven torque during drilling tool rotation; 2. Wear of the shaft surface matching the bearing due to insufficient lubrication

1. Monitor the rotation concentricity of the shaft in real time, with allowable deviation ≤ 0.05mm; 2. Regularly check the lubrication status of the bearing-shaft matching area, and replenish lubricating grease in time

1

SELF-ALIGNING ROLLER BEARING 22330C

ZP000021

GCr15 bearing steel (inner/outer ring and rollers); low-carbon steel (cage)

1. Overheating damage caused by blocked lubrication channels and poor heat dissipation; 2. Wear of rollers and raceways caused by sand and other impurities entering the bearing

1. Clean the lubrication channels every 800 operating hours, and use high-temperature resistant bearing grease (operating temperature ≤ 120℃); 2. Install a dust-proof seal at the bearing end to prevent impurity intrusion, complying with GB/T 307.1-2015 standard

2

CYLINDRICAL ROLLER BEARING NU2330

ZP000022

GCr15SiMn bearing steel (inner/outer ring and rollers); brass (cage)

1. Axial displacement wear caused by insufficient axial positioning; 2. Fatigue damage of rollers due to long-term continuous operation under heavy load

1. Check the axial positioning device regularly to ensure no looseness; 2. Control the operating load within 80% of the rated load, and conduct vibration detection quarterly to identify early fatigue signs

3

BEARING 5611/800

ZP000048

GCr15 bearing steel (inner/outer ring and rollers); steel plate stamping (cage)

1. Wear caused by misalignment of the bearing installation; 2. Aging and hardening of the lubricating grease caused by high ambient temperature

1. Use a bearing installation tool to ensure coaxiality during installation, with deviation ≤ 0.03mm; 2. Replace lubricating grease every 6 months in high-temperature environments (ambient temperature > 40℃)

4

BEARING BOX

ZP000043

HT250 high-strength cast iron with anti-corrosion coating

1. Deformation caused by uneven tightening torque of the fixing bolts; 2. Corrosion caused by drilling fluid splashing and humid environment

1. Tighten the fixing bolts evenly in a diagonal order, using a torque wrench to control torque (25-30 N·m); 2. Clean the bearing box surface regularly, and touch up the anti-corrosion coating every 6 months

1

O-RING 420X7

ZP000020

Fluororubber (FKM) resistant to high temperature and oil

1. Cutting damage caused by sharp edges of the matching parts during installation; 2. Aging and cracking caused by long-term contact with high-temperature lubricating oil

1. Deburr the matching parts before installation, and use a plastic installation tool to avoid direct contact with sharp edges; 2. Replace the O-ring every 800 operating hours, and store unused O-rings in a cool, dry environment (0-25℃)

2

O-RING B180X210X16

ZP000033

Nitrile rubber (NBR) with good oil resistance

1. Compression deformation caused by excessive installation compression; 2. Corrosion caused by chemical components in the drilling fluid

1. Control the installation compression amount within 20-30% of the O-ring cross-sectional diameter; 2. Avoid direct contact between the O-ring and drilling fluid, and install a protective baffle if necessary

3

O-RING 800X8.6

ZP000050

Fluororubber (FKM) resistant to corrosion and high temperature

1. Wear caused by relative rotation between the O-ring and the matching surface; 2. Hardening and brittleness caused by long-term exposure to sunlight

1. Apply a thin layer of lubricating oil on the O-ring surface before installation to reduce friction; 2. Install a protective cover to avoid direct sunlight, and replace the O-ring every 1000 operating hours

4

O-RING 1010X8.6

ZP000053

Fluororubber (FKM) resistant to high pressure and corrosion

1. Seal failure caused by uneven pressure distribution; 2. Damage caused by improper installation tools

1. Ensure the installation groove is clean and smooth, and check the pressure distribution regularly; 2. Use special O-ring installation pliers to avoid stretching and damaging the O-ring

5

SEALING SLEEVE

ZP000054

Stainless steel 304 with nitriding treatment

1. Wear of the sealing surface caused by friction with the rotating shaft; 2. Corrosion caused by residual drilling fluid

1. Check the sealing surface for scratches regularly, and polish if necessary; 2. Clean the sealing sleeve with clean water after operation, and apply anti-corrosion oil

6

END COVER, SMALL BEARING

ZP000026, ZP000027

Q235B carbon steel with powder coating

1. Deformation caused by external impact during transportation or operation; 2. Seal failure due to aging of the gasket on the end cover

1. Use protective packaging during transportation, and avoid collision during on-site operation; 2. Replace the end cover gasket every time the end cover is disassembled, and check the flatness of the end cover

7

END COVER, LOWER BEARING

ZP000052

Q235B carbon steel with anti-rust treatment

1. Corrosion caused by long-term contact with ground water and mud; 2. Loosening of fixing bolts caused by vibration, leading to abnormal wear

1. Elevate the end cover position appropriately to avoid contact with ground water; 2. Check the tightness of the fixing bolts every shift, and apply anti-loosening glue

8

BAFFLE

ZP000049

Q235B carbon steel

1. Deformation caused by drilling fluid impact; 2. Corrosion caused by humid environment

1. Reinforce the baffle with supporting ribs if necessary; 2. Paint the baffle surface annually, and clean the surface mud in time

1

SHAFT LINER

ZP000031, ZP000032

ZCuSn10Pb1 tin bronze with good wear resistance

1. Wear caused by friction with the shaft under high load; 2. Scuffing caused by insufficient lubrication

1. Ensure sufficient lubrication between the shaft liner and the shaft, and check the lubricating oil film regularly; 2. Check the wear amount of the shaft liner monthly, and replace if the wear exceeds 0.5mm

2

SHIM

ZP000035, ZP000051

65Mn spring steel with surface grinding

1. Deformation caused by excessive pressure; 2. Wear caused by repeated disassembly and adjustment

1. Select shims of appropriate thickness according to the adjustment requirements, and do not stack more than 3 shims; 2. Handle with care during disassembly and assembly, and avoid bending the shims

3

KEY

ZP000044

45# carbon steel with quenching treatment

1. Shear failure caused by excessive torque transmission; 2. Wear of the key and keyway caused by relative movement between components

1. Check the fit between the key and keyway before installation, with interference of 0.01-0.03mm; 2. Avoid overloading the rotary table, and monitor the torque in real time