Product Details
TOB-20 Steel + Bronze Powder + POM Self-lubricating Bearing
The TOB-20 composite bearing is constructed from steel backed POM
coated bronze. Its base plate is derived from premium low-carbon
steel, and its middle part is sintered with a porous spherical
copper powder layer. Surface of the compound bearing adopts
wear-resistant lubricant that mainly consists of modified poly
formaldehyde (POM).
The oil holes on surface can not only store grease, but also
effectively bury dust to extend the service life of the composite
bearing. This product provides outstanding mechanical load-carrying
capacity. Its copper powder layer can timely transfer heat produced
in operation, while simultaneously increasing the binding strength
of plastic layer and base plate.
Description
TOB-20 Marginal Bearings Steel + Bronze Powder + PTFE Layer
Cojinetes DX
Product Overview: Suitable for rotating and oscillating movement,
less maintenance requirements due to the long re-lubrication
intervals, lower wear, lower susceptibility to edge loading, no
absorption of water and therefore no swelling, good damping
behaviors, good resistance to shock loads.
The TOB-20 composite bearing is constructed from steel backed
POM/PEEK coated bronze.
Its base plate is derived from premium low-carbon steel, and its
middle part is sintered with a porous spherical copper powder
layer.
Surface of the compound bearing adopts wear-resistant lubricant
that mainly consists of modified poly formaldehyde (POM) or
polyether-ether- (PEEK).
2. The oil holes on surface can not only store grease, but also
effectively bury dust to extend the service life of the composite
bearing. This product provides outstanding mechanical load-carrying
capacity. Its copper powder layer can timely transfer heat produced
in operation, while simultaneously increasing the binding strength
of plastic layer and base plate.
3. The POM or PEEK-based surface is wear-resistant and applicable
for grease lubrication condition. Oil holes which can store grease
are regularly arranged on surface, so that the optimum lubricant
distribution on the whole bearing surface can be guaranteed.
Application Characteristics
1. With superb load-carrying and wear-resisting properties, the
composite bearing is particularly applicable to the heavy-load,
low-speed rotational motion, rocking motion, and the parts where
fluid lubrication is not easily caused under load.
2. This product can be used for a long time without refueling and
maintenance under condition of boundary lubrication. Refueling
allows the lifespan of the composite bearing to be extended.
3. No lead or other high-pollution chemical substances are found in
the wear-resistant material, which is fully compliant with the RoHS
standard.
4. A plastic layer on the surface of our product can leave a
certain margin when a bush is machined. Automatic machining after
punching is available so as to achieve better assembly dimensions.
Structural Style of Manufactured Goods
1. Standard structured products include the bushings, thrust
washers, and the slide plates.
2. Other non-standard products can be made on basis of the drawings
provided by clientele.
Description
TOB-20 POM coated bearing is a standard item of our company. This
type self-lubricating bushing has same material structure with
other DX bushing. It's also called boundary lubricating bearing, DX
bearing,SF-2 oilless bearing, plain sliding bearing and dry bushes.
Material structure:
POM 0.3~0.5mm
Porous bronze 0.2~0.3mm
Steel backing 0.4~2.2mm
Copper plating 0.008mm
Characteristics:
Good load capacity & wear-resistant
Suitable for linear, oscillating and rotating movements
Optimum performance under relatively high loads and low speeds
Lead free bushing can meet environment protection requirement
Availability:
Standard cylindrical DX bushing, DX thrust washers and DX strips
are available
Special designs are produced at short time
Applications:
TOB-20 self-lubricating bearing is widely used in the machine that
Lead free is unacceptable, such as textile machines, auto operating
parts auto chassis, forging machine, metallurgical and so on.
Automotive Industry
The bearing for automotive industry can be used in the pedal
assembly, balance bush, brake caliper, kingpin bush, and the truck
tailgate bush, etc.
Logistics Machinery
This product is ideal for use in the vans, vehicle-mounted cranes,
forest machinery, packaging machinery, and more.
| Static | 250N/mm2 | Max.Load | Dynamic | 140N/mm2 | | Oscillating | 60N/mm2 | | Dry | 2.8N/mm2.m/s | PV limit | Oil | 22N/mm2.m/s | Temp.limit | -40℃∽+130℃ |
|
Friction Coeff. | 0.05∽0.25 | Speed limit | 0.25m/s | Thermal conductivity | 2.03Kcal/M.br.c | Coeff. Of linear expansion | 51×10-6per℃ | Initial pre-lubrication at assembly required |
|

Company Profile
ZHEJIANG TOP BEARINGS CO., LTD.
ZHEJIANG TOP BEARINGS CO., LTD. is a manufacturer and distribution of sliding bearings. Our
products have been widely applied to more than 30 industries like
automobile, engineering machinery, metallurgy, water conservancy
and hydroelectric power and mechanical manufacturing. Also we can
design for customer's specific requirement.
We have reformed boldly, absorbed social elites through
strengthening talent training, fully implemented modern management
mechanism and new marketing strategy and been dedicated to
long-term development of self-lubricating bearing industry. To
control quality strictly, we set up a complete quality management
system (ISO9001 and ISO/TS16949) in the quality policy of “Top
Quality, Top Credit, Sustainable Growth”. Our quality and
performance have reached advanced level.
To expand more markets, stand on the word and meet diversified
requirements of customers, we are actively expanding and
integrating with international markets. Now our products are
available in more than 20 countries and regions in Western Europe,
America and Southeast Asia. We’ll strengthen industrial horizontal
integration further, create scale effect, open up emerging fields
and develop industrial advantages to realize our strategic target
and create a bright future with friends.
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