📅 Published: 2026-09-29

The economics of a bucket tooth

On a 45-tonne class excavator working hard rock, a set of bucket teeth is a consumable measured in weeks. Get the profile and the locking system right and the cost is predictable; get them wrong and you either spend too much on teeth or much more on adapters.

Three things decide the outcome:

1. Tooth profile versus the ground
2. The locking system (and whether your operators can change teeth safely in the field)
3. The adapter-to-bucket fit, which determines whether the tooth loads evenly

Profiles and where they work

For CAT 345GC and 365GC machines in quarry service, a common set-up is chisel in the centre and standard on the outside positions - penetration where it matters, life where it does not.

Locking systems

Most current buckets use a flex-pin or bolt-on locking system. Flex pins are faster to change but need the correct pin for the tooth series; bolted systems are more secure but slower on site. Whichever you run, keep a stock of spare pins on the machine - a tooth that walks off during a shift can damage the bucket lip before the operator notices.

Adapter wear is the hidden cost

When the nose of the adapter wears, the new tooth sits loose, loads the pin and breaks early. Measure the adapter nose each time you change teeth. Once it is outside the OEM tolerance, replace the adapter: continuing to run teeth on a worn adapter turns a cheap consumable into an expensive repair.

Buying notes

• Teeth and adapters are model-specific. Give us the bucket number, the tooth series, or a photo with a ruler
• Confirm the locking system (flex pin, bolt-on, or the OEM-specific type)
• For a mixed fleet, standardise tooth series across machines where possible - fewer part numbers, simpler stock

We supply teeth, adapters, side cutters and pins for CAT, Volvo, Komatsu, Hitachi and Chinese 20-50 tonne classes. Send the bucket details and quantity and we will quote the tier (OEM / premium aftermarket / standard aftermarket) with lead time.

Sourcing checklist before you order

1. **Bucket part number** - every CAT and Volvo bucket carries one; it identifies the tooth series
2. **Tooth series and profile** - if the bucket number is not available, measure the adapter nose and send a photo with a ruler
3. **Locking system** - flex pin, bolt-on, or OEM-specific; a tooth that fits but locks differently will walk off
4. **Quality tier** - forged versus cast teeth behave very differently in rock. Ask the supplier to state the manufacturing method, not just the price
5. **Spare pins** - order 10-15% extra pins with every tooth order; they are cheap and stop a shift when missing

What a good quotation should state

For each line item: the tooth or adapter part number, the tooth series it belongs to (so it is clear which machine it fits), the manufacturing method (forged / cast), the quality tier, the unit price, the packing quantity per carton, and the lead time. If a supplier will not state the manufacturing method for a wear part, treat the price as provisional.

Life and cost picture

On a 45-tonne class machine in hard rock, expect a chisel tooth to be changed every 100-200 working hours depending on abrasiveness, and a standard tooth to last roughly 30-50% longer in the same ground. Adapters should outlast several sets of teeth - if they do not, the tooth profile or the locking system is wrong for the application, not the adapter itself.