DP4 Red PTFE Bushing Part 0040-3024
DP4 Red PTFE Bushing, PTFE composite bearings,Metal-Polymer Composite Material, Copper Plating or Tin Plating
Metal-Polymer Anti-Friction Bearings
Sliding bearing
Plain bearings are bearings that work under sliding friction.
Sliding bearing works stably, reliably and noiselessly.
Under the condition of liquid lubrication, the sliding surface can be separated by lubricating oil without direct contact, and the friction loss and surface wear can be greatly reduced. The oil film also has certain vibration absorption ability.
0040-3012 38.132*41.132*10MM DP4 BUSHING
0040-3013 104.45*109.45*9.5MM DP4 BUSHING
0040-3014 52.11*55.11*30MM DP4 BUSHING
0040-3017 38.132*41.132*20MM DP4 BUSHING
0040-3021 34.997*37.997*10MM DP4 BUSHING
0040-3023 34.997*37.997*20MM DP4 BUSHING
0040-3024 38.132*41.132*40MM DP4 BUSHING
0040-3029 38.084*41.084*8.75MM DP4 BUSHING
Bushing Type
Sleeve; Flanged
Type (PTFE coated sliding bushing) Steel + porous bronze sinter + PTFE
Lead-free flange bushings have PTFE sliding surfaces and tin-plated steel bodies, making them an effective substitute for places that cannot or must not be lubricated. Select this type for low speed, high load applications, or low speed and high load applications. This sleeve is suitable for applications where friction and heat should be avoided. The sleeve can also be used, for example, in oil or water, and has good corrosion resistance. In addition, the model can withstand very high and very low temperatures and has a low coefficient of friction. For example, in fitness equipment.
| |
● Metal-polymer-composite material
● Steel Backing + porous bronze sintered + PTFE + CaF2 + Firbers
● Self-lubricating & Maintenance-free
● Available in sleeve, flanged, washer, strip, plate
|
| ■ Features |
1. DP4 Dry Bearings material is compliant with the European Union's End of Life Vehicles ( ELV ) directive 2000/53/EC on the elimination of hazardous materials in the construction of passenger cars and light trucks.
2. DP4 Dry Bearings material is compliant with the European Union Directive 2002/95/EC concerning the restriction of the use of certain hazardous substances in electrical and electronic equipment ( RoHS Regulation ).
3. DP4 Dry Bearings material has good wear resistance and low friction performance over a wide range of loads, speeds and temperature conditions.
4. DP4 Dry Bearings material has very good performance in oil lubricated heavy duty hydraulic applications.
5. DP4 Dry Bearings material offers benefits in applications where corrosion of the lead in DU may occur.
6. DP4 Dry Bearings material offers improved wear and friction performance along with good chemical resistance compared to DU Dry Bearings material.
7. DP4 Dry Bearings material performs well in dry under light duty applications.
8. DP4 Dry Bearings material is particularly suitable for intermittent operation under reciprocating or oscillating movements. |
| ■ Physical & Mechanical Properties |
|
| Items |
Value |
Unit |
| Maximum Operating Temperature |
280 |
°C |
| Minimum Operating Temperature |
-200 |
°C |
| Maximum Static Load |
250 |
N/mm2 |
| Maximum Dynamic Load |
140 |
N/mm2 |
| Maximum Sliding Speed -dry |
2.5 |
m/s |
| Maximum Sliding Speed -oil lubricated |
5 |
m/s |
| Maximum PV Factor-dry |
1 |
N/mm2 * m/s |
| Maximum PV Factor-oil lubricated |
10 |
N/mm2 * m/s |
| Coefficient of friction -dry |
0.04-0.25 |
|
| Coefficient of friction -oil lubricated |
0.02-0.08 |
|
|
| ■ Usage Range |
|
| dry |
good |
| oil lubricated |
very good |
| grease lubricated |
good |
| water lubricated |
fair |
| process fluid lubricated |
good |
|
| ■ Possible Application |
|
Automotive:
Struts and shock absorbers, door hinges, bonnets and tailgate hinges, steering columns, clutches, gearbox selector fork guides, wiper arms, power steering pumps, pedal bushes, ABS equipment, etc.
Industrial:
Aerospace, agricultural equipment, construction equipment, material handling equipment, forming machines-metal, plastic and rubber, office equipment, medical and scientific equipment, packaging equipment, pneumatic and hydraulic cylinders, pumps and motors, railroad and tramways, textile machinery, valves, etc.
|
PTFE CDIN 1494 Flange sleeve bushing, Flange Size Bushing, ROHS Approved
Sliding surface made of PTFE in tinned steel frame
Especially suitable for places where lubrication is not possible or desirable.
DP4 flanged bearing Suitable for dry running with a low coefficient of friction, low wear rate, good sliding characteristics, the transfer film created will protect the mating metal surface. Suitable for rotary and oscillating movement, high chemical resistance, lower absorption of water and reduced swelling. Also performs well with lubrication.
Material
| PTFE / Fibre + Bronze + Steel + Copper plating / tin-plating |
Einsatzgebiete
| This material meets the demanding criteria for long life and trouble-free performance with or without lubrication. |
| Automotive: tractors, combines, crop sprayers, earthmovers, graders and other construction, auto machines, specific uses in power steering cylinders, steering gear thrust washers, disc brakes, calipers and pistons, shock absorbers, governor linkage, windshield wiper motor, tilt gear assemblies... |
| Business machines: photocopy machines, typewriters, mail sorters, postage meter systems, computer terminal printers and peripheral equipment, automatic printing devices, mail processing machinery... |
| Hydraulics and valves: pumps including gear, rotary, water, axial piston, and other types, ball, butterfly, poppet steam, and other valves and valve trunnions... |
| Home appliances: tape recorders, refrigerators, air conditioners, cleaners, polishers, sewing machines, ovens, dishwashers, clothes washing machines...And materials handling, marine engine, packaging, textile equipment, tools...etc. |
Structures
1. PTFE/Fibre mixture thickness 0.01~0.03mm, provides an excellent initial transfer film, which effectively coats the mating surfaces of the bearing assembly, forming an oxide type solid lubricant film.
2. Sintered bronze powder thickness 0.20-0.35mm, provides Max. thermal conductivity away from the bearing surface, also serves as a reservoir for the PTFE-Fibre mixture.
3. Low-carbon steel, gives exceptionally high load carrying capacity, excellent heat dissipation.
4. Copper/Tin plating thickness 0.002mm, provides good corrosion resistance.
Characteristics
- DP4 flange bushing has low friction bushings offer good wear and low friction performance over a wide range of loads, speeds and temperatures in dry running conditions
- Very good performance in lubricated applications
- Good performance in greased applications
- Suitable for linear, oscillating and rotating movements
- Lead-free material compliant to ELV, WEEE, and RoHS specifications
- Approved to standard DIN EN 1797: 2002-02 and ISO 21010: 2004-04 (Cryogenic Vessels – Gas/Material Compatibility) for piping, valves, fittings and other components in both gaseous and liquid oxygen for up to maximum temperature of 60°C and oxygen pressure of 25 bars.
- Approved to standard FAR 25.853 and FAR 25.855 - Federal Aviation Regulations – making it suitable for interior aircraft applications
Bearing Properties
| GENERAL |
|
Unit |
Value |
| Maximum load, p |
Static
Dynamic
|
N/mm2
N/mm2
|
250
140
|
| Operating temperature |
Min
Max
|
°C
°C
|
- 200
280
|
| Coefficient of linear thermal expansion |
Parallel to the surface |
10-6/K |
11 |
| Normal to the surface |
10-6/K |
30 |
DryPTFE coated bushing
| |
|
|
| Maximum sliding speed, U |
|
m/s |
2.5 |
| Maximum pU factor |
|
N/mm2 x m/s |
1.0 |
| Coefficient of friction |
|
|
0.04 - 0.25 * |
Oil Lubricated
| |
|
|
|
| Maximum sliding speed, U |
|
m/s |
5.0 |
| Maximum pU factor |
|
N/mm2 x m/s |
10.0 |
| Coefficient of friction |
|
|
0.02 - 0.08 |
Recommendations
|
|
|
|
|
| Shaft surface roughness, Ra |
Dry
Lubricated
|
µm
µm
|
0.3 - 0.5
≤ 0.05 - 0.4 *
|
| Shaft surface hardness |
Unhardened acceptable, improved bearing life > 200HB |
Operating Performance
| Dry |
Good |
| Oil-lubricated |
Very Good |
| Grease lubricated |
Good |
| Water lubricated |
Fair |
| Process fluid lubricated |
Good
|
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