iglide Plain Bearings H370 - Technical Data

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2 H370 iglide Plain Bearings H370 - Technical Data Product Range Standard Styles: Sleeve, Flange Custom shapes and sizes available Inner diameters: Inch sizes from 1/8-1-1/4 in. Metric sizes from 3-75 mm Part Number Structure Part Number Structure H370 S I Permissible Surface Speeds b1 - Bearings s - Thrust Washer d2 d1 Continuous Short Term fpm fpm Rotating Oscillating Linear Dimension: I - inch (based on 1/16 ) M - Metric (based on mm) Type: S - Sleeve F - Flange T - Thrust Washer Material Material Data General Properties Unit Testing Method Density g/cm Color gray Max. moisture absorption at 73 F / 50% r.h. % weight < 0.1 DIN Max. moisture absorption % weight < 0.1 Coefficient of friction, dynamic against steel µ p x v value, max. (dry) psi x fpm 21,000 Mechanical Properties Modulus of elasticity psi 1,610,000 DIN Tensile strength at 68 F psi 19,580 DIN Compressive strength psi 11,460 Permissible static surface pressure (68 C) psi 10,880 Shore D-hardness 82 DIN Physical and Thermal Properties Max. long-term application temperature F 392 Max. short-term application temperature F 464 Min. application Temperature F -40 Thermal conductivity W/m x K 0.5 STM C 177 Coefficient of thermal expansion K -1 x DIN Electrical Properties Specific volume resistance Ωcm < 10 5 DIN IEC 93 Surface resistance Ω < 10 5 DIN Usage Guidelines For use underwater When high temperature resistance is necessary When high mechanical loading and wear resistance is required For use in contact with chemicals 14,500 1, When mechanical reaming of the wall surface is necessary iglide M250 When high wear resistance is needed iglide L280 For use in dirty surroundings iglide M250 Pressure (psi) Surface Speed (fpm) Permissible p x v value for running dry against a steel shaft, at 68 F Visit to use our online expert system

3 iglide Plain Bearings H370 - Technical Data H370 The is a further development of the iglide H series. The material is characterized by very low water absorption and clearly improved wear resistance. In terms of the mechanical and thermal characteristic values, shows the same properties as iglide H (see 10.1) Compressive Strength The graph shows the elastic deformation of for radial loads. t the maximum permissible load of psi, the deformation is approximately 2.5% at room temperature. Compressive Strength, Page 1.3 Permissible Surface Speeds The maximum permissible surface speed depends on the temperature during operation. is able to run at speeds of up to 236 fpm (rotating) to 787 fpm (linear) Surface Speed, Page 1.5 p x v value, Page 1.6 Temperatures is an extremely temperature-resistant material. With a maximum permissible short-term temperature of 464 F, plain bearings may be subjected to a heat treating process without additional load. With increasing temperatures, the compressive strength of plain bearings decreases. The graph to the right shows this relationship. The ambient temperatures prevalent in the bearing system also have an effect on the bearing wear. With increasing temperatures, the wear increases. loses approximately 75% of its compressive strength when the temperature increases from room temperature to 302 F. On the other hand, there is little change in wear resistance at the same temperature range. pplication Temperatures, Page 1.7 Deformation (%) ,626 7,252 10,880 Pressure (psi) 140 F 73 F Deformation under load and temperature Pressure (psi) Continuous Short Term fpm fpm Rotating Oscillating Linear Maximum surface speeds Temperature ( F) Recommended permissible maximum static surface pressure of as a result of the temperature PDF: CD: RoHS info: inch pplication Temperature Minimum - 40 F Max. long-term F Max. short-term F dditional axial securing +212 F mm Temperature limits for 10.3

4 H370 iglide Plain Bearings H370 - Technical Data Installation Tolerances plain bearings are oversized before being pressfit. fter proper installation into a recommended housing bore, the inner diameter adjusts to meet our specified tolerances. Please adhere to the catalog specifications for housing bore and recommended shaft sizes. This will help to ensure optimal performance of iglide plain bearings. See Tolerance Table, Page 1.14 Testing Methods, Page 1.15 For Inch Size Bearings Length Tolerance (b1) Length of Chamfer (f) Length Tolerance (h13) Based on d1 (inches) (inches) to / to / to / to / to / to / f =.012 d f =.019 d 1 > f =.031 d 1 > f =.047 d 1 > 1.18 Telephone Fax b1 f Length of chamfer Friction and Wear.0197 (0.5 mm) Length For Metric Size Bearings Length Tolerance (b1) Length Tolerance (h13) (mm) (µm) 1 to 3-0 /-140 > 3 to 6-0 /-180 > 6 to 10-0 /-220 >10 to 18-0 /-270 >18 to 30-0 /-330 >30 to 50-0 /-390 >50 to 80-0 /-460 Length of Chamfer (f) Based on d1 f = 0.3 d mm f = 0.5 d 1 > 6-12 mm f = 0.8 d 1 > mm f = 1.2 d 1 > 30 mm Internet: sales@igus.com QuickSpec: Coefficient of friction (µ) The friction and wear values are better for than for iglide H. Especially for underwater applications, there is no better material than. The coefficient of friction and wear resistance show little effect with increased speed and load. This relationship explains the excellent performance of plain bearings at high loads. Friction and wear are also dependent, to a large degree, on the shafting partner. Shafts that are too smooth increase both the coefficient of friction and the wear of the bearing. For a ground surface with an average roughness range of 8-16 rms is recommended for the shaft. Coefficients of Friction and Surface, Page 1.8 Wear Resistance, Page Surface Speed (fpm) Coefficients of friction for as a result of the surface speed; p =108 psi Coefficient of Friction Dry Grease 0.09 Oil 0.04 Water 0.04 Coefficients of friction for against steel (Shaft finish = 40 rms, 50 HRC) Coefficient of friction (µ) ,176 4,351 6,527 8,702 10,880 Pressure (psi) Coefficients of friction for as a result of the load, v =1.97 fpm Coefficient of friction (µ) Shaft roughness (rms) Coefficient of friction of as a result of the shaft surface (shaft 1050 hard chromed)

5 iglide Plain Bearings H370 - Technical Data H370 Shaft Materials The graphs show results of testing different shaft materials with plain bearings made of. For loads up to 290 psi, hard-chromed shaft is the best material for in rotating applications. Note the high wear values for 303 Stainless shafts, which have a tendency to stick-slip because of their very smooth surfaces. The HR Carbon Steel shaft has better rotational values than Cold Rolled Steel starting at 290 psi. On the other hand, for oscillating movements, the 303 Stainless Steel shaft has a clear superiority. s the graph shows, it produces, at 290 psi, a lower wear by a factor of 11 than the Cold Rolled Steel shaft. If the shaft material you plan to use is not contained in this list, please contact us. Shaft materials, Page 1.11 Wear (µm/km) Hard anodized aluminum utomatic screw steel , hard chromed HR carbon steel 304 Stainless 440B Wear (µm/km) Wear (µm/km) Wear of with different shaft materials in rotating applications Pressure (psi) 1050 steel Stainless HR carbon steel Hard chromed Hard chromed 304 Stainless steel HR carbon steel PDF: CD: RoHS info: Wear of, rotating application with different shaft materials, p = 108 psi, v = 98 fpm Oscillating Rotating Wear for oscillating and rotating applications with different shaft materials p = 290 psi Chemical Resistance plain bearings have a good chemical resistance. They are resistant to most lubricants, is also resistant to most weak organic and inorganic acids. The moisture absorption of plain bearings is below 0.1% in standard atmosphere. The saturation limit in water is also below 0.1%. For this reason, plain bearings are often used for underwater applications. Chemical Table, Page 1.16 Medium Resistance lcohol + Hydrocarbons, chlorinated + Greases, oils without additives + Fuels + Weak acids + to 0 Strong acids + to Weak alkaline + Strong alkaline + + resistant, 0 conditionally resistant, not resistant Chemical resistance of ll data given concerns the chemical resistance at room temperature (68 F). For a complete list, see page 1.16 inch mm 10.5

6 H370 iglide Plain Bearings H370 - Technical Data Radiation Resistance withstands neutron and gamma particle radiation without detectable losses to its excellent mechanical properties. Plain bearings made from are resistant to radiation up to an intensity of 2 x 10 2 Gy UV-Resistance plain bearings are permanently resistant against UV radiation. Vacuum Telephone Fax In a vacuum environment, moisture is released as a vapor. However, due to its low moisture absorption, use in a vacuum is possible. Electrical Properties plain bearings are electrically conducting. pplication Example Specific volume resistance Surface resistance Electrical properties of < 10 5 Ωcm < 10 5 Ω Internet: sales@igus.com QuickSpec: Filling applications: linear, oscillating, and rotating movements can be achieved using bearings 10.6

7 iglide Plain Bearings H370 - Sleeve, Inch H370 d2 f b1 d For tolerance values please refer to page 10.4 Sleeve - Inch Part Number d1 d2 b1 I.D. fter Pressfit Housing Bore Shaft Size iglide Plain Bearings H370 - Flange, Inch fter Pressfit in Ø H7 h13 Max. Min. Max. Min. Max. Min. H370SI /8 3/16 3/ H370SI /16 1/4 1/ H370SI /4 5/16 1/ H370SI /16 3/8 3/ H370SI /8 15/32 1/ H370SI /2 19/32 1/ H370SI /8 23/32 3/ H370SI /4 7/8 3/ H370SI / H370SI / H370SI /4 1 13/32 1 1/ PDF: CD: RoHS info: f b1 r d2 d1 For tolerance values please refer to page 10.4 r = max b2 d3 Part Number d1 d2 b1 d3 b2 I.D. fter Pressfit Housing Bore Shaft Size Max. Min. Max. Min. Max. Min. H370FI /8 3/16 3/ H370FI /16 1/4 1/ H370FI /4 5/16 1/ H370FI /16 3/8 3/ H370FI /8 15/32 1/ H370FI /2 19/32 1/ H370FI /8 23/32 3/ H370FI /4 7/8 3/ H370FI / H370FI / H370FI /4 1 13/32 1 1/ inch mm 10.7

8 H370 iglide Plain Bearings H370 - Sleeve, MM Sleeve - MM f b1 d2 0.5 mm d1 For tolerance values please refer to page 10.4 Dimensions according to ISO and special dimensions Telephone Fax Internet: sales@igus.com QuickSpec: Part number d1 d1-tolerance d2 b1 I.D. fter Pressfit Housing Bore Shaft Size after Pressfit in Ø H7 h13 Max. Min. Max. Min. Max. Min. H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM H370SM

9 iglide Plain Bearings H370 - Flange, MM H370 f b1 b2 r d2 d1 d3 For tolerance values please refer to page 10.4 r = max. 0.5 Flange - MM Dimensions according to ISO and special dimensions Part Number d1 1) d1-tolerance d2 d3 b1 b2 I.D. fter Pressfit Housing Bore Shaft Size fter Pressfit in Ø H7 d13 h Max. Min. Max. Min. Max. Min. H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM H370FM PDF: CD: RoHS info: inch mm 10.9

10 H370 iglide Plain Bearings H370 - Notes Internet: sales@igus.com QuickSpec: Telephone Fax