How to Choose a 30-Ton Used Excavator for Quarry and Road Work

A 30-ton class excavator (roughly 28–36 tons) is the usual step up when 20-ton machines spend too long on rock, truck loading or highway cuts. Popular used models include the CAT 330, Komatsu PC300/PC350, Hitachi ZX330, Doosan DX300/DX340 and similar Chinese-brand units. The right choice depends on the work, not only the badge on the boom.

1. Start with production, not the model name

Write down typical truck size, material (shot rock, ripped rock or earth), required digging depth and whether you will run a breaker. Quarry loading usually needs a strong boom, a rock bucket and a machine that can sit at one face all day. Road work may value reach, fuel use and easier transport between sites. Share those details with the seller so they do not send you a long-reach unit when you need a standard mining front.

2. Weight, transport and site limits

Confirm operating weight, shoe width and shipping height. A 30-ton machine is harder to move than a PC200-class unit; check bridge and trailer limits on the route to your site. Wider shoes help on soft ground but can be a disadvantage on rock. If the unit must travel by container or flat rack from Shanghai, ask how the yard will prepare the boom and counterweight.

3. Inspect for hard-work wear

Quarry machines often show boom and arm cracks, worn bucket linkage, tired undercarriage and play in the swing bearing. Ask for daylight photos of weld areas, a swinging-on-the-spot video, and a loading cycle with the engine under load. Check final-drive hubs for leaks and listen for unusual travel noise. Hour-meter readings matter less than whether wear matches the hours claimed.

4. Attachments and hydraulics

If you need a hydraulic breaker, confirm that auxiliary piping, a pedal or joystick button, and a suitable control valve are already fitted. Test combined movements: a 30-ton pump that is tired will feel slow when you swing and raise the boom together. Budget for bucket repair or a new rock bucket if the floor is thin.

5. Buying from a Shanghai yard

Agree on FOB or CFR terms, inspection rights before the balance payment, and which spare parts (filters, teeth) are included. A slightly higher-hour machine with a fresh undercarriage and a sound boom can be a better export buy than a “low-hour” unit with hidden structural repairs. Tell us your material and truck size, and we can shortlist 30-ton excavators currently in our Fengxian yard.

Looking for a used excavator or wheel loader?
YC Used Machinery / Shanghai Yongcheng Used Machinery
No.68 Qinggao Road, Fengxian District, Shanghai, China
WhatsApp: +86 166 8175 4290 · Email: vangher43@gmail.com
Website: https://selldigger.com
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