Solid bronze bearings

Solid bronze bearings are turned to size from continuously cast bronze. The bearings have high load-bearing capacity and are resistant to high temperatures. As standard, the bearings are lubricated with grease or oil but are also available with graphite or plastic lubricating pins, thus giving the bearings self-lubricating properties.

THN has a wide standard range of Solid bronze bearings, both with (OILES) and without (JM1-15) lubricating pins. This range comprises bearings with an internal diameter of 5 to 200 mm and is made from RG5 bronze. The standard material for the bearings with lubricating pins is CuZnAl5 aluminium bronze. Various other alloys are also available.

Besides the standard range, bearings can be supplied on request with special properties such as:

Suitability for extremely high temperatures
Suitability for for applications with salt water (offshore)
Lubricating pins made from other materials such as plastic or PTFE
Spherical design (self-adjusting)

The most important properties of cast bronze slide bearings are:

JM1-15	- Conventional bearing material for lubricated applications - Suitable for oil and grease lubrication

OILES	- Maintenance-free bearings for heavy applications - Extremely good performance under heavy loads

The suitability of cast bronze slide bearings is shown below:

Conditions	JM1-15	OILES
Dry	Not suitable	Good
Oil	Good	Good
Grease	Good	Good
Water	Not suitable	Good
Process fluid	Not suitable	Reasonable

Technical data

Permitted loads for the cast bronze slide bearings are as follows:

Mechanical value	JM1-15 RG5 / CuSn5ZnPb	OILES CuZn25Al5
PV (N/mm²·m/s)	2,8	3,34
P max. (N/mm²) static	45	250
P max (N/mm²) dynamic	25	100
V max. (m/s)	0,30**	0,25
Maximum temperature	+ 250°C	+ 250°C
Minimum temperature	*	- 40°C

* Depending on the lubricant used.
** Grease lubrication can be used at speeds up to 15m/min; above that, continuous oil lubrication is used. Higher speeds are possible if sufficiently lubricated for hydrodynamic lubrication.