What attachments fit a CAT 320?

Common jobs for the Cat 320

The Cat 320 is the backbone of many big Swedish civil jobs. You see it on road, rail and bulk handling where the machine runs shift after shift in production. At 20 tonnes it is heavy enough for real digging yet still a machine that moves between jobs without much fuss.

On a road job the Cat 320 handles deeper excavation, lays pipe and loads spoil onto dumpers all day. On demolition it takes concrete and rebar with the right attachment. It is a machine that does the heavy work, and the attachments should take the same pace as the machine itself.

When you choose attachments for the Cat 320, uptime is what counts. Downtime on a big job costs more per hour than you save on a cheap attachment. Buy attachments rated for the 20-tonne class, not undersized.

Buckets and attachments that fit the Cat 320

For a 20-tonne machine you choose large digging buckets for excavation and a grading bucket for levelling and slopes. A toothed bucket bites better in hard ground, a grading bucket gives a smoother surface. Many run both and swap as needed.

A sorting grapple turns the Cat 320 into a real demolition and material machine. It lifts stone, pulls structures apart and sorts spoil. At 20 tonnes the machine carries the grapple steadily even when you work well out.

All buckets and grapples run on the S70 hitch, the standard coupler for this class. That makes it easy to build a set of attachments that all fit and that you swap quickly between tasks.

Hydraulic breaker and heavy attachments for the Cat 320

A 20-tonne machine like the Cat 320 drives a serious hydraulic breaker for rock, concrete and frost. The breaker is often the attachment that decides whether you get through hard ground or stand and wait. It must be rated for the machine weight to hit at full force.

Always match the breaker oil flow to the machine hydraulics before you order. The Cat 320 has the flow needed, but a breaker not set up for the machine hits slowly and wears both breaker and machine.

For compacted ground and rock the breaker cannot manage, a ripper pays off. It tears up the ground ahead of the bucket, and on a machine with the Cat 320 force it gets you through ground where the bucket otherwise just scrapes.

S70 quick hitch and fit

The Cat 320 runs an S70 hitch, the heavy coupler that belongs on large excavators. Always check the attachment is listed for S70 before you buy or it will not fit the hitch. The hitch is built for the forces a 20-tonne machine puts on attachments.

A tiltrotator can be fitted to the Cat 320 and gives the bucket more movement, which is worth it on mixed jobs near kerbs and slopes. On pure bulk handling where the machine mostly digs and loads, the money may do more on extra buckets.