NORELEM FRANCE - Leader mondial des composants standard destinés à la construction et à l’ingénierie mécanique

Orings are universal sealing elements used to seal against liquid or gaseous median. They are suitable for static and minor dynamic applications. Orings can be used for radial and axial sealing. The sealing occurs during installation by the radial or axial compression of the crosssection. During operation, the median pressure increases the deformation of the Oring and so increases the sealing effectiveness. For best sealing effectiveness, the Oring should have the largest possible crosssection. During installation the correct groove size, compaction, elongation/compression should be ensured. By static use the compaction should be 15 30% of the crosssection. By dynamic use it should be 10 18% (hydraulic), 4 12% (pneumatic). With regard to the ID, when installed the Oring should be stretched max 6% compressed max 3%

Steel 1.0401 (C15) or stainless steel 1.4301 (whirled spindles stainless steel 1.4305). Version Steel rolled, bright. Stainless steel up to Tr 40x7 rolled, above this whirled, bright. Note Rolled, high precision trapezoidal thread spindles. ISO trapezoidal thread based on DIN 103. The trapezoidal thread spindle is a transmission thread with relatively high friction. Standard thread forms are selflocking. This has the advantage that they generally do not need to be secured in the rest position. Tolerance class 7e Pitch precision 0.3/300 mm Length sawed with excess, ends not deburred.

Steel C35Pb. Gunmetal Rg7. Plastic PA6.6 with MoS2). ISO trapezoidal thread based on DIN 103. Steel nuts for adjustments during manual operation and as fastening nuts. Not advised for use with motorised drives due to the steelsteel material combination. Gunmetal nuts for motion drives with low and medium speed. By insufficient lubrication, gunmetal trapezoidal thread nuts on steel spindles have good dryrunning properties. Plastic nuts for lownoise motion drives. Good dryrunning properties. Tolerance class 7H.

Spline shafts based on DIN ISO 14 with straight parallel flanks. A spline shaft with spline hub is used to transmit high torques while enabling simultaneous axial movement. The spline shafts are colddrawn. Cold drawing does not interrupt the grain flow of the base material, ensuring spline shafts of very high strength. Tolerances Straightness 0.8 mm/m. Torsion max. 0.5 mm/m. On request Other lengths.

Steel C45. Stainless steel 1.4305. Gunmetal Rg 7. Spline hubs based on DIN ISO 14 with straight parallel flanks. A spline shaft with spline hub is used to transmit high torques while enabling simultaneous axial movement.

Elastomer NBR. Brace ring and tension spring steel. Rotary shaft lip seals are readytoinstall seals for sealing rotating shafts. They are made from an elastomer outer sleeve and an internal bracing shim. The tension spring ensures increased pressure of the lip against the shaft and supports static sealing. Form A DIN 3760 (ISO 6194/1) version, smooth OD. Form AS DIN 3760 (ISO 6194/0) version, smooth OD with extra dust lip to protect from external dirt. The material NBR has a high wear resistance and is resistant to motor fuels, oil, hydraulic oil and lubricating grease. Operating limits Circumferential speed (m/s) ≤12 Pressure (MPa/bar) ≤0.05/0.5 (rotary shaft lip seals are generally meant for unpressurised operation).

The axis height of the spindle bearings matches the fixed bearing unit 2407801. The floating bearing units consist of a housing with deep groove ball bearing, which adapts axially to the linear expansion of the spindle.

Housing, grey cast iron. Bearing, ballbearing steel 100Cr6. Seal, rubber NBR. Pillow block bearings consist of a sealed singlerow ball bearing with a spherical outer ring which is mounted in a housing. Because of the spherical outer surface of the bearing, shaft misalignment can be compensated for. The bearings are manufactured with a plus tolerance. This results in transition or press fits when using shafts with htolerances. The shaft is secured by grub screws on the inner ring. In normal applications, pillow block bearings are maintenancefree due to the lifetime lubrication. In difficult environmental conditions relubrication can be carried out over the grease nipple. All housing dimensions are nominal dimensions for which the usual casting tolerances must be taken into consideration.

Material Ballbearing steel 100Cr6. Seal, rubber NBR. Version Sealed on both sides with a spherical outer ring. Can be relubricated. Note The internal construction of the insert bearings corresponds to that of standard Series 6200 and 6300 radial ball bearing. However, they have wider inner rings for easier fastening on shafts. The inner rings are manufactured with a plus tolerance. This results in transition or press fits when using shafts with htolerances. The shaft is secured by 2 grub screws positioned 120° apart on the inner ring. The insert bearings are ready to install and are permanently lubricated with a suitable ball bearing grease. In normal applications, relubrication is not necessary.

Housing, stainless steel 1.4301. Bearing, stainless steel 1.4125. Seal, rubber NBR. Note Pillow block bearings consist of a sealed singlerow ball bearing with a spherical outer ring which is mounted in a housing. Because of the spherical outer surface of the bearing, shaft misalignment can be compensated for. The bearings are manufactured with a plus tolerance. This results in transition or press fits when using shafts with htolerances. The shaft is secured by grub screws on the inner ring. In normal applications, pillow block bearings are maintenancefree due to the lifetime lubrication. In difficult environmental conditions relubrication can be carried out over the grease nipple. All housing dimensions are nominal dimensions for which the usual casting tolerances must be taken into consideration.