How to Design Excavator and Loader Buckets

How to Design Excavator and Loader Buckets

How to Design Excavator and Loader Buckets

1. Bucket Height
A higher bucket will have more volume, but the break out force will be decreased since the tip to pin distance will become longer. There is also an increased risk of not filling the bucket completely. For loader buckets, a high bucket will decrease the risk of rocks falling over the upper edge of the bucket and damaging the machine. Many loader buckets have an extra “fence” on top to stop rocks from falling on the machine.

2. Bucket Width
A wide bucket will have more volume, but penetration into the material will be harder.

3. Bucket Depth
Increasing the bucket depth will make a larger bucket without affecting the penetration. However, the fill- and discharge time will increase. There is also a risk of decreased fill factor. Bucket clearance will be less, which may cause increased wear under the bucket. For loader buckets, the tipping height and break out force will decrease when making the bucket deeper.

4. Cutting Edge Thickness
A thicker cutting edge will generally be stronger. However, a thick cutting edge may require a tougher plate material due to a higher degree of three dimensional stress condition. A thin cutting edge will be lighter and penetrates more easily into the material.

5. Cutting Edge Profile
A pointy edge will penetrate more easily into the material. When the tip to pin distance is kept constant, a more pointy edge will give less volume. To be able to use straight teeth, a V-delta or spade-delta edge can be used instead of a V or spade edge. For an excavator bucket, a more pointy edge will make it harder to keep a clean work area.

6. Rake Angle
A larger rake angle (more pointy side profile) will improve the penetration significantly, but the volume will decrease. In addition, the front of the bucket will lose strength.

7. Tapering Angle
A large tapering angle will decrease the risk of material sticking inside the bucket. The volume will decrease if the width of the bucket is kept constant. A larger tapering angle will give more wear on the inside of the bucket, but less wear on the outside.

8. Pin to Tip Link Distance
A long distance between the pin and the tip link will give a high break out force. However, the speed and range of the bucket movement will be lower.

1646868 ADAPTER A1654931 ELBOW A1657014 TEE G1694274 TEE1697394 CONNECTOR A2054136 ELBOW A2175293 TEE A2609187 CONNECTOR A2609221 ELBOW A2977977 ELBOW A3196218 ELBOW A3791522 COLLAR-BOL16403-01T01 FUEL FILTER PK 121640301T01 FUEL FILTER PK 122330-356031 FUEL FILTER PK 122330354072 FUEL FILTER PK 1233386 FUEL FILTER PK 123386 FUEL FILTER PK 12413965A1 FUEL FILTER PK 128-94414796-3 FUEL FILTER PK 12BF954 FUEL FILTER PK 12FF5081 FUEL FILTER PK 12CA391 SEAL WSHR CS 45ID1821 IDLER ASSY W/SHAFTID2164 IDLER GP W/BRKTS 700H7107324 BOBCAT TOP PIN SHANKCR4236/20 SHOE 20 2/GR – 973 7/8167-2317 SEAL-U-CUP

3920780 BOLTCYL.HEAD 12 X1.75 X120 6BT6610118320 GASKET 0.016731415270 SCREW ROCK LEVER W/NUT4165515 PAD-STAB-C4174499 BRG-BALL-C4179502 DISC-FCN-C4181953 BEARING-CL4186462 41864634197251 BRG-CON-CL4371713 SUPPORT AS4436838 STRIP-WEAR4436839 STRIP-WEAR4510455 FLANGE-SPL4510456 FLANGE-SPL4510457 FLANGE-SPL4510458 FLANGE-SPL3608236 BEARING-RO3643985 FT HOSE BU3643988 FT HOSE BUT66707 GRADER BLADE 7X6X5/8381-922913-1 SPRING4285643 FUEL FILTER PK 124807093 SEAL-LINER4420365 SEAL-ORINCR4840/600L TRACK SHOE 3-BA568-218 OR-70NBR-1.25X1/8-C/S(50)4900405 SCREW-CAPID3584/660 GRSR 1B 660MM3479742 CB10HD PLASTIC CAP

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