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iglide® J200 - Material data

Materials table

General features Unit iglide® J200 Test method
Density g/cm³ 1.72
Color Dark gray
Max. moisture absorption at 73° F/50% R. H. Wt.-% 0.2 DIN 53495
Max. moisture absorption Wt.-% 0.7
Coefficient of friction, dynamic against steel µ 0.11 - 0.17
p x v value, max. (dry) psi x fpm 8,600

Mechanical properties
Modulus of elasticity psi 406,100 DIN 53457
Tensile strength 68° F psi 8,412 DIN 53452
Compressive Strength psi 6,237
Permissible static surface pressure (68° F) psi 3,336
Shore D hardness 70 DIN 53505

Physical and thermal properties
Upper long-term application temperature °F 194
Upper short-term application temperature °F 248
Lower application temperature °F -58
Thermal conductivity [W/m x K] 0,24 ASTM C 177
Coefficient of thermal expansion (at 73° F) [K-1 x 10-5 ] 8 DIN 53752

Electrical properties
Specific volume resistance Ωcm > 10 8 DIN IEC 93
Surface resistance Ω > 10 8 DIN 53482

Plastic Bushings Permitted p x v values Permissible p x v values for iglide® J200

Permitted p x v values

For iglide® J200 plastic bushings running dry against a steel shaft, at 68° F

iglide® J200 is the result of the development of a particularly low-friction plastic bushings. The friction plays a crucial role particularly in linear applications. Whereas many materials have excellent coefficients of friction under high loads, iglide® J200 is characterized by its property to retain very good coefficients of friction in low loads as well.

Among all the iglide® materials, iglide® J200 exhibits the lowest coefficients of friction. The average coefficient of friction of all measurements, even with different shaft materials, is 0.11. For this reason the hard-anodized aluminum counter partner gains special significance.

Deformation under load and temperatures Figure 27.2: Deformation under load and temperatures

Surface pressure

The comparison with the rest of the iglide® materials makes it clear that iglide® J200 plastic bushings are suitable for rather low loads.

Figure 27.2 shows the expansion of the materials from room temperature up to the recommended maximum limit. Like all thermoplastics, the compression strength declines above the temperature. This is shown in Figure 27.3.

Maximum surface speed

fpm Rotating Oscillating Linear
Constant 197 137 1969
Short-term 295 216 2953

Permitted surface speeds

iglide® J200 attains high surface speeds through its excellent coefficients of friction. Continuous rotary speeds of 197 fpm are possible. The permitted speeds are clearly higher yet in linear movements or in short-term operation. Speeds of over 2953 fpm were successfully tested in linear movements.

Figure 27.3: Maximum recommended surface pressure dependent on the temperature

Temperatures

The plastic bushings made of iglide® J200 were not developed for high temperatures. The maximum permitted temperature of 248° F should not be exceeded. Thereby the ambient temperature generated by friction has to be added. From 140° F onward, the bushings should be mechanically fastened, so that the danger of bushings creeping out of the bores is avoided. The wear resistance too declines disproportionately from 158° F.

Temperature limits

iglide® J200 Application temperature
Lower - 58 °F
Upper, long-term + 194 °F
Upper, short-term + 248 °F
Additional axial securing + 140 °F

Coefficients of friction dependent on the surface speed Figure 2.4: Coefficients of friction dependent on the surface speed, p =108 psi

Friction and wear

Friction is the main argument for the application of plastic bushings made of iglide® J200. The friction of this bushing is more favorable with numerous shaft materials than that of any other iglide® plastic bushing.

The influence of the shaft is in contrast very large in wear resistance. It is worth taking a look, even at low loads, at the extensive measurement results of the conducted tests.

The graphs clarify this statement. The wear resistance of the bushing is exceptionally good up to the limit load of 3,336 psi, which makes the bushing better suited for rotating applications.

Coefficients of friction for iglide® J200 against steel
(Shaft finish = 40 rms, 50 HRC)

iglide® J200 Dry Grease Oil Water
Coefficients of friction µ 0.11 - 0.17 0.09 0.04 0.04
Coefficients of friction dependent on the load Coefficients of friction dependent on the load, v = 1.96 fpm
Coefficients of friction dependent on the shaft surface Coefficients of friction dependent on the shaft surface (1050 hard chromed)

Fig. 2.7: Wear, rotating application with different shaft materials, load p = 108 psi, v = 98 fpm

Shaft Materials

The used shaft material has a large influence on the wear resistance. All shaft materials (soft or hardened) are indeed suitable for application with iglide® J200. However the best results are attained with hard-anodized aluminum. This counter partner has proved itself particularly in linear movements.
Wear with various shaft materials in the rotating operation dependent on the load Wear with various shaft materials in the rotating operation dependent on the load
Wear with different shaft materials, oscillating and rotating movement Wear with different shaft materials, oscillating and rotating movement p = 290 psi

Important tolerances for iglide® J200 plastic bushings according to ISO 3547-1 after the press-fit.

Diameter
d1 [inch]
Shaft h9
[inch]
iglide® J200
E10 [inch]
Up to 0.019685 0 - 0.0009843 +0.0005512 + 0.0021259
> 0.1181 to 0.2362 0 - 0.0011811 +0.0007874 + 0.0026772
> 0.2362 to 0.3937 0 - 0.0014173 +0.0009843 + 0.0032677
> 0.3937 to 0.7087 0 - 0.0016929 +0.0012598 + 0.0040157
> 0.7087 to 1.1811 0 - 0.0020472 +0.0015748 + 0.0048819
> 1.1811 to 1.9685 0 - 0.0024409 +0.0019685 + 0.0059055

Installation tolerances

iglide® J200 plastic bushings are standard bushings for shafts with h-tolerance (recommended minimum h9).

After the installation in a housing bore with H7 tolerance, the inner diameter of the bushing automatically adjusts to the E10 tolerance.

Medium Resistance
Alcohol +
Hydrocarbons, chlorinated +
Greases, oils, without additives +
Fuels +
Weak acids 0 to -
Strong acids -
Weak alkaline +
Strong alkaline + to 0
+ resistant      0 conditionally resistant      - non-resistant

Influence of moisture absorption Influence of moisture absorption of iglide® J200 plastic bushings


Electrical properties

Specific volume resistance > 108 Ωcm
Surface resistance > 108 Ω

Chemical resistance

iglide® J200 plastic bushings are resistant to diluted alkalis as well as to solvents and all kinds of lubricants. The humidity absorption of iglide® J200 plastic bushings amounts to about 0.2% in standard climatic conditions. The saturation limit in water is 0.7%. These values are so low that a moisture expansion need to be considered only in extreme cases.

Radioactive rays

iglide® J200 plastic bushings are radiation resistant up to a radioactive intensity of 3 x 10² Gy.

UV-resistant

iglide® J200 plastic bushings are very resistant to the influence of UV rays.

Vacuum

The use in vacuum is possible only conditionally. Only dry plastic bushings made of iglide® J200 should be tested in vacuum.

Electrical properties

Plastic bushings made of iglide® J200 are electrically insulating.

Delivery program

The iglide® J200 plastic bushings are manufactured according to order specifications.


The terms "igus", "Apiro", "chainflex", "CFRIP", "conprotect", "CTD", "drylin", "dry-tech", "dryspin", "easy chain", "e-chain", "e-chain systems", "e-ketten", "e-kettensysteme", "e-skin", "e-spool", "flizz", "ibow", "igear", "iglidur", "igubal", "kineKIT", "manus", "motion plastics", "pikchain", "plastics for longer life", "readychain", "readycable", "ReBeL", "speedigus", "triflex", "robolink", "xirodur", and "xiros" are legally protected trademarks of the igus® GmbH/ Cologne in the Federal Republic of Germany and where applicable in some foreign countries.

igus® GmbH points out that it does not sell any products of the companies Allen Bradley, B&R, Baumüller, Beckhoff, Lahr, Control Techniques, Danaher Motion, ELAU, FAGOR, FANUC, Festo, Heidenhain, Jetter, Lenze, LinMot, LTi DRiVES, Mitsibushi, NUM,Parker, Bosch Rexroth, SEW, Siemens, Stöber and all other drive manufacturers mention in this website. The products offered by igus® are those of igus® GmbH