The main types of excavator attachments are buckets, hydraulic hammers, augers, grapples and thumbs, rippers, demolition tools such as shears and pulverisers, and the quick hitches and tiltrotators that connect them. Most excavators spend their working life on two or three buckets, with a hammer or auger added for particular jobs. Whether an attachment fits your machine comes down to its pins, its weight and the machine's hydraulics.
Excavator buckets
Excavator buckets come in more shapes than any other attachment, and the right profile saves time on every pass. The table lists the common types.
| Bucket | What it's for |
|---|---|
| General purpose (digging) bucket | Everyday digging in soil and clay, with teeth to break the ground |
| Trenching bucket | Narrow trenches for pipes and cables, chosen to match the trench width you need |
| Mud or batter bucket | A wide bucket with a straight edge and no teeth, for clean-up, shaping batters and finishing levels |
| Tilt bucket | A mud bucket that tilts left and right, so you can cut slopes and drains without moving the machine |
| V or trapezoidal bucket | Cuts drains and channels to a set profile in one pass |
| Rock bucket | A reinforced bucket with heavy teeth for rock and abrasive material |
| Riddle or skeleton bucket | An open grid that sifts soil from rocks, roots and rubble |
Bucket width is a trade-off. A wider bucket moves more per pass but needs more force to fill, so on a mini excavator a bucket that's too wide slows the work in heavy clay. Teeth and cutting edges wear first, and most can be replaced without replacing the bucket.
Hydraulic hammers
A hydraulic hammer, also called a rock breaker, breaks concrete, rock and asphalt that a bucket can't dig. It drives a steel tool into the material many times a minute, powered by the excavator's hydraulic oil. Three tool points cover most work:
- Moil point: general breaking, trenching through rock and demolition
- Chisel: controlled cuts in concrete and asphalt, and splitting layered rock
- Blunt: breaking boulders and oversize rock by impact
Some hammers use a nitrogen charge to add force to each blow, while others are fully hydraulic and keep a steady blow through a long shift. Either way, match the hammer to the machine. Hammer makers list a recommended carrier weight range, and a 5.7 tonne machine such as the Yuchai YC60 carries a much bigger hammer than a 1 tonne machine. A hammer that's too heavy makes the excavator unstable and stresses the boom.
Work in short bursts with the tool square to the surface. If the material hasn't broken after about 15 seconds, move to a new spot instead of hammering the same one.
Augers
An excavator auger drills round holes for fence posts, piers, footings, signs and trees. It has two parts: a hydraulic drive unit that hangs from the hitch, and a spiral bit in the diameter you need.
Standard earth bits suit soil and clay, while rock bits with hardened teeth handle shale and compacted ground. Bit length sets the depth of each hole, and extensions add more. Most auger drives need a two-way hydraulic circuit so the bit can turn both ways, which lets you reverse it out of a jammed hole.
Grapples and thumbs
A thumb is a clamp that closes against the bucket, turning it into a grab for rocks, logs, branches and demolition waste. It's the simplest way to add handling ability to an excavator.
Mechanical thumbs are set in one of several fixed positions and need no hydraulics, which suits occasional use. Hydraulic thumbs open and close from the cab, so they grip loads of different sizes, but they need a two-way hydraulic circuit.
A grapple replaces the bucket with jaws built for handling, such as sorting demolition waste, stacking logs or clearing scrub. A rotating grapple also turns the load to place it exactly, which takes extra hydraulic supply for the rotation.
Rippers
A ripper is a single heavy tooth that breaks up hard, compacted or rocky ground before the bucket digs it. It puts the machine's full digging force on one point, so it cracks weathered rock, shale, hardpan and old road base that a bucket would skate over.
Rippers need no hydraulics. On a mini excavator, a ripper followed by a general purpose bucket often handles ground that would otherwise need a hammer.
Demolition attachments
Demolition attachments cut, crush and sort the materials a building is made of. Most are built for midi and larger excavators, because they need high hydraulic flow and a heavy machine to carry them:
- Shears: cut steel beams, pipe and reinforcing bar
- Pulverisers and crushers: crush concrete and separate it from the reinforcing steel
- Demolition grabs: pick, sort and load mixed waste
- Magnets: lift scrap steel for recycling
On a mini excavator, residential demolition usually comes down to a hammer, a thumb or grapple and a strong bucket. Our guide to excavator uses covers demolition work and the asbestos checks that come first.
Quick hitches and tiltrotators
A quick hitch connects attachments to the excavator's arm, so the operator changes tools in minutes instead of driving the pins out by hand. The main options are:
- Pin-on: the attachment pins straight to the arm with no hitch. It's strong and simple, but slow to change
- Manual quick hitch: the hitch picks up the attachment's pins, and the operator locks it with a pin or wedge
- Fully automatic hitch: locks both pins from the cab, with a front pin lock that holds the attachment if the main lock fails
Quick hitch safety has its own rules in Australia. SafeWork NSW has phased out semi-automatic quick hitches, and WorkSafe Queensland recommends fully automatic hitches that don't rely on the operator fitting a safety pin. AS 13031:2023 sets the safety requirements for earthmoving quick couplers. Never release a hitch with the attachment raised, and check the lock indicator every time you change tools.
A tiltrotator sits between the arm and the hitch and works like a wrist. It rotates the attachment 360 degrees and tilts it about 45 degrees each way, so the operator can cut slopes, dig around services and place material without repositioning the machine. Tiltrotators are most common on midi and larger excavators, and on a mini excavator a tilt bucket gives some of the same benefit for far less.
Are excavator attachments interchangeable?
Excavator attachments are not universal. An attachment fits only if it matches the machine's pins or hitch, suits its weight and runs on its hydraulics, so check these points before you buy:
- Pin diameter: the attachment's pins must match the arm and link, or the hitch you use
- Pin centres: the distance between the two pins sets the geometry and has to match
- Ear width: the gap between the mounting ears must fit the end of the arm
- Carrier weight: attachment makers list the excavator weight range each model suits. Too heavy and the machine strains or tips, too light and the attachment wears out fast
- Hydraulics: a hammer needs a one-way circuit with a return line to the tank, while thumbs, grapples, tilt buckets and augers need a two-way circuit. Flow (L/min) and pressure (bar) must sit inside the attachment's range
If the pins don't match, an adapter or a hitch made for the attachment can bridge the gap. Check too whether the excavator has auxiliary hydraulic lines run to the end of the arm, and how many circuits it has, because many mini excavators come with just one. Our guide to what an excavator is and how to read its spec sheet explains the figures to compare.
Best attachments for a mini excavator
The best attachments for a mini excavator are the ones you'll use every week. A general purpose bucket, a narrow trenching bucket and a mud bucket cover most digging, levelling and clean-up. Add an auger for posts and piers, a ripper for hard ground, a thumb for rocks and branches, and a small hammer if you break concrete often.
Match the set to the machine. The table shows a sensible starting point for the four Yuchai mini excavators DJJ Equipment sells.
| Model | Operating weight | Starting set | Add for regular work |
|---|---|---|---|
| Yuchai E12 and YC10 | 1.0 t | Narrow trenching bucket, general purpose bucket, mud bucket | Small auger for posts and plants, light hammer for thin concrete |
| Yuchai U18 | 1.8 t | Trenching, general purpose and mud buckets | Auger, ripper, thumb, hammer for slabs and paths |
| Yuchai YC60 | 5.7 t | General purpose, trenching and mud or tilt buckets | Hammer, ripper, grapple or thumb, auger for piers |
Every tool on that list needs the matching pins, and powered tools need the right hydraulics. Before buying a hammer or auger for a machine such as the Yuchai U18, check its auxiliary lines and flow against the attachment's requirements.
Looking after excavator attachments
Excavator attachments last longer with a few minutes of care each day:
- Grease pins and bushes daily, or as the maker specifies, especially on hammers, thumbs and tiltrotators
- Check bucket teeth, adaptors and cutting edges, and replace teeth before they wear into the adaptor
- Inspect hydraulic hoses and couplings for leaks, rubbing and damage, and cap the ends when the attachment is off
- Check pins, bushes and hitch locks for wear and play
- Store attachments on timber or a pallet, out of the weather, so they don't rust or sink into the ground
Hammers need extra attention. Grease the tool as often as the maker specifies, usually every few hours of work, and check the tool bushing for wear.
The right excavator attachment depends on the job, the size of the machine and what its pins and hydraulics can take. Start with buckets, add powered tools once you've confirmed the hydraulics, and choose a fully automatic hitch if you'll change tools often. To match attachments and a mini excavator to your work, call DJJ on 1800 355 388 with the jobs you do and the attachments you plan to run.
