Buckets are grouped into families (B) according to the capacity of the bucket. Generally, use a bucket with a smaller capacity when you are using a longer stick and/or a longer boom. Conversely, use a bucket with a larger capacity when you are using a shorter stick and/or a shorter boom. This rule ensures better machine stability and protection against structural machine damage.
Each stick is designed to match a specific family of buckets. It is not possible to attach buckets of a different family to a given stick.
The following tables show various compatible boom-stick-bucket combinations. Select an optimum combination according to the working conditions and according to the type of work that is being done.
For more information, consult your Cat Dealer.
| Bucket Type | Linkage | Width of Bucket | SAE Capacity of Bucket | Weight of Bucket | Fill (%) | Boom |
| Stick |
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| Track |
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| General Duty (GD) | B1 | |
1.00 m3
1.31 yd3 |
|
100 | (1) |
| Heavy Duty (HD) | B1 | |
1.00 m3
1.31 yd3 |
|
100 | (1) |
| (1) | 2100 kg/m3 (3500 lb/yd3) is the maximum density of material. |