Sliding bearings DP4 / DP4B

1. Structure

PTFE + fillers (alkaline-earth metals and polymer fibres) sliding layer on sintered bronze with steel (DP4) or bronze (DP4B) backing.

2. Characteristics

⦁ bearing material for lubricated applications with good wear and friction performance over a wide range of loads, speeds, and temperature conditions,
⦁ under light loads can also work dry,

⦁ offers improved friction and wear performance over DU in lubricated applications,

⦁ suitable for rotating and oscillating motion, but not recommended for reciprocating motion,

⦁ lead-free, complying with the European Parliament’s End of Life Vehicles directive (ref. no 2000/53/EC) on the elimination of hazardous materials in construction of passenger cars and light trucks.

3. Applications

⦁ industrial: lifting equipment, hydraulic pumps and motors, pneumatic equipment, medical equipment, textile machinery, agricultural machinery, scientific equipment, drying ovens, office equipment, etc.

⦁ automotive: McPherson struts and shock absorbers, gearbox selector fork guides, wiper arms, power steering pumps, etc.

4. Availability

⦁ from stock: cylindrical bushes, flanged bushes, strips,

⦁ to order: non standard parts.

5. Technical data

dp4b
6. Assembly tips

Assemble with stepped shaft in housings with insertion chamfer. Before assembly moisten housing or bush with oil. Fixture: no additional fixture is necessary after press fitting in, however gluing is permissible in special applications

or with reciprocating motion.
Caution: Do not use any lubricants containing MoS2, graphite or any other solid ingredients (can result with increased wear due to higher friction