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Copper Bushing & Copper Liner / Bronze Bush
Copper Bushing & Copper Liner / Bronze Bush for cone crushers. Tin bronze CuSn10P1 (ZCuSn10P1) / high-lead tin bronze. Supplied for cone crusher eccentric
The bronze bearings that carry the eccentric and the head: inner and outer eccentric bushes, the spherical bearing under the head, and the thin copper liners that go with them. None of them touches rock. They fail from heat and dirty oil, which is a different purchasing problem from wear parts.
Product details
| Name | Description | Material | Application | Delivery time | Price |
|---|---|---|---|---|---|
| Copper Bushing & Copper Liner | Inner and outer eccentric bushes, spherical bearing (socket bushing) and copper liners | Tin bronze CuSn10P1 High-lead tin bronze | Cone crusher eccentric, socket and thrust assemblies | 15–20 working days | USD 2.5–3.5 / kg |
Price is indicative, per kilogram, and moves with the manganese grade and the weight of the casting. It is fixed on the quotation. Delivery time is production time and does not include sea freight.
Fits: the model, not the size
A cone liner is quoted against the machine model and, where one exists, the cavity drawing: the wall thickness at the wear band, the segment count and the clamp pattern all have to match what the bowl will accept. That covers our own single- and multi-cylinder series as well as the imported machines most often re-lined in the field. Where only a worn liner is available, the profile is measured and drawn before the pattern is made. HP series, GP series, Symons 4¼ / 5½ ft, Sandvik CH / CS, Terex Cedarapids, Kleemann MCO, McCloskey C.
Warehouse stock and loading
Photographs taken in our own warehouse: finished jaw plates in stock, packed for export, and loaded for shipment. Stock levels change week to week — ask what is on the floor before you plan a shutdown.
Three bushes, three jobs
The eccentric assembly runs inside a pair of bushes — one pressed onto the shaft, one seated in the frame — and the head sits on a spherical bearing that takes the vertical thrust. They are sold together far more often than separately, because a worn pair cannot hold an oil film even if one half is new.
- Inner (eccentric) bush — runs against the shaft. Loses its clearance first when the oil carries grit.
- Outer (eccentric) bush — sits in the frame bore and takes the reaction load. Changed with the inner bush as a rule.
- Spherical copper (socket bushing) — carries the head and the thrust. Wear shows up as a head that rocks or a product that will not hold its setting, not as a temperature alarm.
- Copper liner and thrust washers — the thin parts that set the end float. Supplied machined to thickness, because a liner ground down in the workshop changes the clearance the whole assembly was built around.
Why bronze, and which bronze
Bronze is used because it fails softly: it conforms to the shaft, it embeds grit instead of scoring steel, and it keeps a film at the loads and surface speeds a cone runs at. Tin bronze (CuSn10P1 / ZCuSn10P1) is the standard choice — good compressive strength, enough elongation to survive a shock load, and a low friction coefficient, which matters because friction is heat and heat is what kills the bush.
High-lead tin bronze is used where the shaft runs hot or the oil supply is marginal, because the lead gives a dry-running margin. Aluminium bronze is reserved for the heaviest load cases; the trade-off is a harder bush that is far less forgiving of misalignment.
What actually kills a bush
Almost never the grade. A blocked oil passage, a filter that was not changed, a machine started cold at full load, or a seal that let dust into the lube circuit — in that order. A bush that comes out blue has been run without oil, not poured from the wrong alloy.
That is also why we ask for the oil pressure and the filter history along with the model when a bush fails early. Replacing the bush without finding the restriction puts a new bush into the same failure.
Fits and clearances
Bushes are machined to the housing and shaft diameters on the drawing, with the oil grooves and feed holes in their original positions — the groove pattern is not cosmetic, a bush with the wrong pattern starves its loaded side. The running clearance belongs to the machine, not to the bush, so if the frame bore has been re-machined, send the measurement: a standard bush will not correct an oversize housing.
How to order
Three inputs set the quote: the machine model, the cavity profile you are running now, and the tonnage the last liner delivered. Send the model plus either the drawing number or a photograph of the worn liner with a tape across the wear band, and the quote comes back with weight, grade and lead time. If the bowl has been re-machined, send the bore measurement as well.
Other parts in this group
Independent aftermarket parts supplier. Not affiliated with, endorsed by, or sponsored by Metso, Sandvik or any other original equipment manufacturer. Brand and model names are used only to describe fitment.
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