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6I0273+6I0274
YASSIAN or Your's
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How to ensure that the new bucket tooth match the equipment
1. Precise matching of tooth seat parameters
Measure the key dimensions of the tooth seat
Use a vernier caliper to measure the opening width of the gear seat, the diameter of the pin hole and the depth of the positioning groove. The error should be ≤0.5mm to avoid stress concentration caused by interference or excessive clearance.
Refer to the equipment manual to confirm the correspondence table between the bucket tooth model and the tooth seat specification (for example, the PC100 model is compatible with the 20X-70-14151 type tooth seat).
2. Compatibility of the pin locking system
For the horizontally installed bucket teeth, the width of the retaining ring groove (standard 1.2 to 1.8mm) needs to be checked. A mismatch will lead to the failure of the locking. Verify the pin shaft diameter and tolerance: If the original pin shaft is 30mm, the new bucket tooth pin hole needs to meet the H7/g6 transition fit (clearance 0.02-0.05mm).
Ii. Selection Based on Working Conditions Adaptation
Working condition type: Hard rock/ore sand/loose material
Key points for selecting bucket teeth: Choose RC type thickened rock teeth (sharp Angle 60°~70°) and flat teeth (cutting edge thickness 15mm)
Material requirements: Low-carbon alloy steel (such as 30CrMnSiBRE)
High manganese steel (surface hardened layer z15mm)
Note: Under hard rock conditions, the service life of the bucket teeth is approximately 150 hours and they need to be compulsorily inspected and replaced
Iii. Installation Accuracy Control
1. Cleanliness standards for mating surfaces
The residual sediment on the installation surface of the tooth seat should be no more than 0.1mm thick; otherwise, it will cause the bucket teeth to tilt and be subjected to force. Blow the pin holes vertically three times with compressed air (20.6MPa) to ensure there are no hard particles.
2. Pin shaft installation verification
Manually insert the pin shaft to 1/3 depth and then hammer it. The final end should be flush with the outer surface of the tooth seat (deviation ±0.5mm).
Acceptance criteria: No displacement or abnormal noise during the foot kick test, and the gap between the bucket teeth and the tooth seat checked with a feeler gauge is less than 0.3mm.
Iv. Special Structural Matching Schemes
Pin-free connection technology: The new type of bucket teeth adopts a conical protrusion + wedge-shaped groove design. During installation, they are knocked in at a 30° Angle, and during disassembly, they are inserted and retracted (the contact surface pressure increases by 40%).
Intelligent monitoring system: Equipped with bucket tooth status sensors, it can detect wear data in real time and automatically alarm when the threshold is exceeded (recognition accuracy >99%)
Operation mnemonic: Measure three holes (opening position/pin diameter/trench depth), check the working conditions (select RC for hard rock/select flat mouth for sand and soil), and verify three zeros (zero sand and mud/zero tilt/zero sway). Standard matching can reduce abnormal wear of bucket teeth by up to 50%.
v
How to ensure that the new bucket tooth match the equipment
1. Precise matching of tooth seat parameters
Measure the key dimensions of the tooth seat
Use a vernier caliper to measure the opening width of the gear seat, the diameter of the pin hole and the depth of the positioning groove. The error should be ≤0.5mm to avoid stress concentration caused by interference or excessive clearance.
Refer to the equipment manual to confirm the correspondence table between the bucket tooth model and the tooth seat specification (for example, the PC100 model is compatible with the 20X-70-14151 type tooth seat).
2. Compatibility of the pin locking system
For the horizontally installed bucket teeth, the width of the retaining ring groove (standard 1.2 to 1.8mm) needs to be checked. A mismatch will lead to the failure of the locking. Verify the pin shaft diameter and tolerance: If the original pin shaft is 30mm, the new bucket tooth pin hole needs to meet the H7/g6 transition fit (clearance 0.02-0.05mm).
Ii. Selection Based on Working Conditions Adaptation
Working condition type: Hard rock/ore sand/loose material
Key points for selecting bucket teeth: Choose RC type thickened rock teeth (sharp Angle 60°~70°) and flat teeth (cutting edge thickness 15mm)
Material requirements: Low-carbon alloy steel (such as 30CrMnSiBRE)
High manganese steel (surface hardened layer z15mm)
Note: Under hard rock conditions, the service life of the bucket teeth is approximately 150 hours and they need to be compulsorily inspected and replaced
Iii. Installation Accuracy Control
1. Cleanliness standards for mating surfaces
The residual sediment on the installation surface of the tooth seat should be no more than 0.1mm thick; otherwise, it will cause the bucket teeth to tilt and be subjected to force. Blow the pin holes vertically three times with compressed air (20.6MPa) to ensure there are no hard particles.
2. Pin shaft installation verification
Manually insert the pin shaft to 1/3 depth and then hammer it. The final end should be flush with the outer surface of the tooth seat (deviation ±0.5mm).
Acceptance criteria: No displacement or abnormal noise during the foot kick test, and the gap between the bucket teeth and the tooth seat checked with a feeler gauge is less than 0.3mm.
Iv. Special Structural Matching Schemes
Pin-free connection technology: The new type of bucket teeth adopts a conical protrusion + wedge-shaped groove design. During installation, they are knocked in at a 30° Angle, and during disassembly, they are inserted and retracted (the contact surface pressure increases by 40%).
Intelligent monitoring system: Equipped with bucket tooth status sensors, it can detect wear data in real time and automatically alarm when the threshold is exceeded (recognition accuracy >99%)
Operation mnemonic: Measure three holes (opening position/pin diameter/trench depth), check the working conditions (select RC for hard rock/select flat mouth for sand and soil), and verify three zeros (zero sand and mud/zero tilt/zero sway). Standard matching can reduce abnormal wear of bucket teeth by up to 50%.
