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

Housing 1.4308 stainless steel, from size 5 1.4301. Clamping arm 1.4301 stainless steel. Buffer natural rubber. Screw stainless steel A2. Version Housing and lever arm bright. Screw ISO 4017, grade 70, bright. Note Clamping element with integrated highly elastic, shaperetaining natural rubber buffer. Together with a chain tensioner set, sprocket set or a tension pulley, the clamping element makes a readytoinstall tensioning unit suitable for tensioning chain and belt drives. Suitable for both tensioning directions. The clamping elements are maintenancefree and tearoff resistant. The clamping element is fastened to the machine component through a bore. If necessary, a heavyduty dowel pin can be inserted in the positioning notch “P” for torque support.

The angle bracket enables easy mounting of the clamping elements directly on the machine component. The bore D2 serves to hold the clamping element. The clamping element can be mounted on the front or rear of the bracket. The bores D3 enable the bracket to used for other applications.

Polyethylene PEUHMW (ultrahigh molecular weight polyethylene). Glide rails for roller chains as defined in DIN ISO 606. These support and guide the roller chains on the return side, thus extending useful life by significantly reducing wear on the roller chains. They reduce vibrations and noise in the chain drive. These glide rails have high abrasion and wear resistance. They are maintenancefree, acidproof and have high chemical resistance. The additional C profiles are used for fastening to the system substructure and they protect the glide rails from lateral forces and torsion. Assembly The glide rails are pushed into the C profiles fastened to the system. The glide rails must be mounted so that the material is allowed to expand. A property of thermoplastic materials is that they expand or contract more than metals when there are temperature variations.

Aluminium. Rim flanges, steel. Version Aluminium bright. Steel electro zincplated. Note Standard T profile acc. to DIN 7721 T2 with metric pitch (trapezoidal toothing). At least one belt pulley must have a rim flange. The toothed belt pulleys have a centre bore or a pilot hole (this can vary due to manufacturing methods). For this reason, the dimension D2 max. given in the table is the maximum diameter of the bore with which the toothed belt pulleys are supplied. This pilot/centre bore can be amended by the customer to produce a reamed bore, reamed bore with keyway or a tapped hole. Alternatively, customers can also use bushes to reduce the bore diameter.

Steel. Toothed pulleys without aluminium rim flanges. Version Steel phosphated. Aluminium bright. Note Standard HTD profile with metric pitch (halfround toothing). At least one belt pulley must have a rim flange. The toothed belt pulleys have a centre bore or a pilot hole (this can vary due to manufacturing methods). For this reason, the dimension D2 max. given in the table is the maximum diameter of the bore with which the toothed belt pulleys are supplied. This pilot/centre bore can be amended by the customer to produce a reamed bore, reamed bore with keyway or a tapped hole. Alternatively, customers can also use bushes to reduce the bore diameter. The pulleys may be recessed on the sides.

Standard HTD profile with metric pitch (rounded toothing). At least one toothed belt pulley must have a rim flange. Conical hole for taper clamping bushes. The taper clamping bushes must be ordered separately and are available for various shaft diameters. Pulleys with a taper hole are statically balanced as per ISO 1940 grade G16.

Standard ATprofile with metric pitch (trapezoidal toothing). For manufacturing your own toothed wheels

Endless toothed belt with trapezoidal profile to DIN 7721 T1 with metric pitch. Ideal for drives with high belt flexibility. Permits smallest pulley diameters. The toothed belts are intended for drives where precision is a requirement, safety is important and the effects of chemicals are a concern. maintenancefree highpower transmission minimal belt extension accurate positioning and angles very good chemical resistance, especially to oils, greases and fuels extremely high abrasion resistance transmits power up to 30 kW reliable speed up to 10,000 rpm

Belt back and belt teeth CR. Tension cords Glascord. Tooth covering mesh polyamide. Note Endless toothed belts with an arched profile as per ISO 13050 with metric pitch. The rounded shape of the tooth contour provides a particularly high degree of safety against incorrect tooth interlocking, combined with a very rounded tooth mesh. Operating noise is significantly reduced by the rounded tooth mesh. The toothed belts are robust, economical and versatile. Belt speed vmax perm. 50 m/s Transmissible power up to 8.42 kW Permissible speed up to 14000 rpm Lownoise and lowmaintenance Very good chemical resistance, particularly against oils, greases and fuels Accurate positioning and angles

The tension meter is used to perform a pretension test on commercially available belt systems quickly and easily by means of frequency measurement. Fully electronic and equipped with stateoftheart microprocessor technology, the meter enables precise adjustment of all V, toothed and flat belts that have to be tensioned in the range from 10 to 600 Hz. The measurement must never be performed while the drive is running The meter is not permitted or certified for use in potentially explosive areas.