The POM-based sleeve bearing, also called DX bushing, boundary lubricated bearing, oil-free bearing, dry bearing, DX bearing and POM coated dry sleeve. It has a similar material structure with dowels. The difference lies in the POM coated layer.
Yellow POM composite bushing is a standard item of our company. This type self-lubricating bearing has same material structure with other dx bushing.
1. POM 0.3~0.5mm.
2. Porous bronze 0.2~0.3mm.
3. Steel backing 0.4~2.2mm.
4. Copper plating 0.008mm.
Specifications for DX Split Bush Bearing - DX Type | |
Reference | DX bush |
Brand | TOP BEARINGS |
Inside Diameter | 20mm |
Outside Diameter | 23mm |
Width | 15mm |
Type | Bearing |
Weight (KG) | 0.0001 |
· Good load-bearing capacity and wear resistance
· Suitable for linear, oscillating and rotating movements
· Optimal performance at relatively high loads and low speeds
· Lead-free sockets can meet environmental protection requirements
Yellow pom composite self-lubricating bearing is widely used in the machine where lead-free is unacceptable, such as textile machinery, self-acting parts, car chassis, forging machine, metallurgy and so on.
Load capacity | 70N/mm2 | |
Friction value | 0.05 to 0.25 µ | |
Temperature | -40 to +130 [ °C ] | |
Max. Pv (oil condition) | 22N/mm2 .m/s | |
Max. speed | 2.5m/s |
OPERATING PERFORMANCE | |
Dry | Poor |
Oil lubricated | Good |
Grease lubricated | Very Good |
Water lubricated | Poor |
Process fluid lubricated | Poor |
GENERAL | Unit | Value | |
Maximum load, p | Static Dynamic | N/mm2 N/mm2 | 140 140 |
Operating temperature | Min Max | °C °C | - 40 130 |
Coefficient of linear thermal expansion | Parallel to the surface | 10-6/K | 11 |
Normal to the surface | 10-6/K | 29 |
GREASE LUBRICATED | ||
Maximum sliding speed, U | m/s | 2.5 |
Maximum pU factor | N/mm2 x m/s | 2.8 |
Coefficient of friction | 0.06 – 0.12 |
RECOMMENDATIONS | |||
Shaft surface roughness, Ra | µm | ≤ 0.4 | |
Shaft surface hardness | Normal For longer service life | HB HB | > 200 > 350 |
Bearing forms available in standard dimensions
Metric bearings and imperial bushings made to order: standard bushing forms in special dimensions, half-bushings, special shapes obtained by stamping, bearings with locating notches, lubricant holes and machined grooves, customized bushing designs