Rotary Seals - Dilanda.it

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D H8 Cassette Seal 2,0 15° 3,2 5,0 2,5 15° d h8 2,0 Figure 48 System 500 in wheel hub application 2,0 15° 5,0 2,5 15° 3,2 d h8 2,0 D H8 Figure 49 System 5000 in pinion application 140 Latest information available at www.busakshamban.com Edition April 2006
Cassette Seal Shaft run out Shaft run out should as far as possible be avoided or kept within a minimum. At higher speeds there is a risk that the inertia of the sealing lip prevents it from following the shaft movement. The seal must be located next to the bearing and the bearing play is maintained at the lowest possible value. Shaft run out (mm) 0.3 0.2 0.1 NBR-HNBR-FKM Axial movement Axial movement, inclusive what can be considered as normal bearing play, should be within ± 0.1 mm. The Cassette seal will function at larger movements, however this may cause a larger wear on support lugs and in the end shorter lifetime. Pressure Any difference in pressure from one side of the seal to the other should be avoided. Since the seal is developed for ventilated applications, a pressure difference will in the end lead to a decreased lifetime or leakage. In some applications, a pressure difference up to 0.05 MPa could be accepted, but tests should be carried out for each case. 0 Figure 50 1000 2000 3000 4000 5000 6000 7000 (rpm) Shaft speed Permissible run out of the shaft Speed The permissible speed of rotation at sealing point for the various seal designs stated below, assumes normal running conditions, e.g. oil retention and no pressure differential across the seal. Eccentricity Eccentricity between shaft and housing bore centres should be avoided in order to eliminate unilateral load of the lip. Type of Seal max. Surface Speed (m/s) System 500 10 System 3000 4 System 5000 15 Eccentricity Figure 51 (mm) 0.4 0.3 0.2 0.1 0 50 100 150 200 250 25 75 125 175 225 275 Shaft diameter Permissible eccentricity (mm) Shaft misalignment Shaft misalignment should as far as possible be avoided or kept at a minimum, max. 0.25 mm. Start-/Operating torque Due to transferred assembly forces inside the Cassette seal, the Cassette seal absorbes higher torque than a standard radial seal. See also the Installation part. HRV - Additional dirt seal The HRV seal is an all-rubber seal. It is designed for use as complementary seal for the System 500, in dirty applications such as off-road. The main sealing is against small particles such as dust, but also dirt and splash. Since the sealing action is axially, it can absorb some axial displacement. The HRV seal is bonded directly to the outer case of the System 500. The design is similar to the FORSHEDA V-ring with a body and a flexible conical shaped sealing lip with an integral resilient “hinge“. The HRV seal rotates, due to the outer case being press fitted into the bore, and seals axially against a stationary counter face. During rotation the sealing lip rubs against the counterface under a contact pressure calculated to achieve a sealing function. The HRV seal also operates as a deflector ring, and its centrifugal action contributes to a good sealing function. Due to the centrifugal force, the contact pressure of the lip decreases with increase in speed. The contact pressure also varies with the fitted width. Latest information available at www.busakshamban.com Edition April 2006 141
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Rotary Seals Deutsch Your Partner f
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Rotary Seal General description ...
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Rotary Seal n GENERAL DESCRIPTION T
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Rotary Seal V—Rings Family V—Ri
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Rotary Seal PTFE Rotary Shaft seals
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Rotary Seal n Introduction Rotating
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Rotary Seal Shaft run out and eccen
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Rotary Seal n Design instructions A
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Rotary Seal Surface finish In order
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Radial Oil Seal Sealing element Mat
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Radial Oil Seal Fluorinated Rubber
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Radial Oil Seal Metal case The prin
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Radial Oil Seal Peripheral speed an
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Radial Oil Seal n Shaft and housing
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Radial Oil Seal n Standard types of
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Radial Oil Seal Table VI Materials
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Radial Oil Seal Dimension Part no.
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Radial Oil Seal n Busak+Shamban typ
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Page 101 and 102: Radial Oil Seal Table XXI Materials
Page 103 and 104: Radial Oil Seal n STEFA type 12CC -
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Page 113 and 114: Radial Oil Seal n Rotary and axial
Page 115 and 116: Radial Oil Seal n Product descripti
Page 117 and 118: Radial Oil Seal n STEFA standard AP
Page 119 and 120: Radial Oil Seal n STEFA 1B/APJ and
Page 121 and 122: End Cover n END COVER General descr
Page 123 and 124: End Cover Bore D H8 Width B Chamfer
Page 125 and 126: End Cover n Busak+Shamban type YJ 3
Page 127 and 128: Shaft Repair Kit n SHAFT REPAIR KIT
Page 129 and 130: Shaft Repair Kit n Installation rec
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Page 133 and 134: Shaft Repair Kit Shaft diameter imp
Page 135 and 136: Shaft Repair Kit Shaft diameter imp
Page 137 and 138: Cassette Seal n System 3000 n Syste
Page 139 and 140: Cassette Seal ID d 1 OD Width Syste
Page 141: Cassette Seal Temperature limits fo
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Page 153 and 154: V—Ring n Dimension table - V—Ri
Page 155 and 156: V—Ring For shaft diameter d 1 Ins
Page 161 and 162: V—Ring Ordering example V—Ring,
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Page 177 and 178: GAMMA Seal n GAMMA-seal type TBR/9R
Page 179 and 180: Axial Shaft Seal n AXIAL SHAFT SEAL
Page 181 and 182: Axial Shaft Seal n Applications Fie
Page 183 and 184: Axial Shaft Seal Design instruction
Page 185 and 186: Axial Shaft Seal Shaft Dimensions M
Page 187 and 188: Axial Shaft Seal Ordering example A
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Turcon ® Roto Glyd Ring ® Materia
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Turcon ® Roto Glyd Ring ® Orderin
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Turcon ® Roto Glyd Ring ® Orderin
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Turcon ® Roto Variseal ® blend ra
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Latest information available at www
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For further information: Europe Tel
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