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CEF POLYMERES
CEF polyurethane

CEF polyurethane

Product catalog summary

Overview
CEF Polymers specializes in high-performance polyurethane solutions aimed at enhancing the mechanical performance of industrial equipment. Their product range includes custom parts, springs, and rollers, available in various sizes and rigidity levels.

Design and Manufacturing Capabilities
CEF Polymers provides 2D and 3D CAD design, integrated tooling design, and specific calculation software for elastomer characterization. They adhere to ISO 9001 quality management standards and offer extensive testing capabilities for abrasion, elongation, compression, and traction.

Product Series and Specifications

M Series: High chemical resistance, excellent mechanical properties, and good hydrolysis resistance with hardness up to 72 Shore D.
R Series: High abrasion resistance and good oil solvent resistance, with a wide hardness range.
U Series: Superior dynamic properties and excellent resistance to internal heat.
T Series: Suitable for the food industry and water compliance.
W Series: Focuses on damping properties.

Material Properties

High elasticity and shock resistance.
Excellent resistance to abrasion, chemicals, water, light, and ozone.
Good electrical insulation and easy machining.
Operational temperature range up to 100°C continuously.

Performance Characteristics

Strathane elastomers exhibit high elongation, tensile strength, and modulus, offering toughness and durability.
Excellent resilience, with recommended resilience levels varying based on application needs.
Resistant to gamma radiation and atmospheric conditions, showing no degradation after extensive ozone exposure.

Applications
Strathane products are used in various applications, including springs, dampers, wheels, rollers, and protective components for robotics and vehicles. They are suitable for high-speed and high-load applications.

Technical Data
Detailed technical specifications for different Strathane series include hardness, tensile strength, elongation, modulus, resilience, tear strength, and abrasion loss. Temperature resistance and specific gravity for each series are also outlined.

Assembly and Usage Guidelines
Guidelines for assembly include considerations for preload, creep factor, and force/deflection curves. The document emphasizes the importance of considering temperature effects on elasticity and provides tolerances for dimensional and hardness measurements.

Implementation
Elastomers are incompressible, and their deformation under load results in inflation. The percentage of inflation equals the percentage of compression, necessitating the examination of inflation curves to determine safe locations and spaces.

Support Surfaces
Support surfaces must be smooth and can be flat, concave, or convex. If mounted in a recess, the clearance must be adapted to the bulge factor.

Contact Surface
Contact surfaces should be smooth, with a roughness between Rz 25 to Rz 40, as per DIN ISO 10069-1. The diameter should at least equal the spring diameter.

Guidance and Stacking
Guide bolts are recommended to guide, center, and prevent friction and buckling, especially when stacking springs. Stacked springs should be separated by washers to maintain deformation autonomy. Greasing the guide bolt axis is required.

Specifications
Includes detailed tables with dimensions, compression percentages, and force measurements for various spring models and configurations, providing critical data for selecting the appropriate spring based on specific requirements.

Assembly Recommendations
The length of the stripper should be slightly longer than the free punch length. Ensure sufficient space for bulging during installation.

Performance and Maintenance
These springs offer high operating force with small installation dimensions, reduced noise levels, and long service life due to high abrasion resistance. They are maintenance-free and can replace gas springs, operating at speeds up to 40 cycles/min.

Catalog excerpts

HIGH PERFORMANCE Polyuréthane Custom parts - Springs - Rollers

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Elastomeric polyurethane solu ons to improve the mechanical performance of industrial equipment. The diversity of Strathane formula ons allows the construc on of parts for all applica ons. With or without inserts, our molding technique allows the produc on of parts with the widest range of rigidity. We supply components from a few grams to several hundred kilos CEF POLYMERES Flexibility and Performance •2D 3D CAD design oﬃce •Integrated tooling design •Speciﬁc calcula on so'ware for the characteriza on of elastomers •Means of control and tests •Abrasion, Elonga •Material control •Quality management...

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HIGH PERFORMANCE POLYURETHANE CASTING Good chemical resistance Excellent mechanical proper es High hardness available un l 72 Sh D Good hydrolisys resistance Available for low tempature High abrasion resistance Good oil solvant resistance Tear resistance Good resilience Whole hardness range Load capacity Superior dynamic proper es Excellent resistance to internal heat Good chemicals resistance For food industry and water compliance 65 70 90 90 95

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of formula on pread hardness from 25 to 99 Shore A elas city • Resistance • Shock • High resistance excep onal good electric insula on ageing resistance resistance to the water, to the light and to the ozone good resistance to the chemical agents on insert steel, aluminum, cast iron, composite and constant Impact strength extension before break good resistance in microorganisms tooling cost easy process

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Applicable tolerances Moulding DIN ISO 3302-1 M3 Machining, cuBng, cuBng to size according to hardness, consult us Hardness For elastomers measured in Sh A on high hardnesses 98 and 99 an equivalence Sh D can be given Tolerance M/UR/U series Hardness +/- 3° Sh A R series Hardness +/- 5 Sh A For some produc ons +/-2 is possible Low temperature property Many STRATHANE elastomers remain ﬂexible at very low temperatures and have excep onal thermal shock resistance. The low temperature resistance allows applica ons below 0 °C. Strathane becomes briEle at -70°C High temperature property Strathane performs...

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Thermal resistance property Strathane is a very good insulator but a poor conductor of heat. This fact must be taken into account when designing parts for dynamic applica ons involving internal hea ng. Fric3on proper3es Coeﬃcient of fric on for 420M 80 Sh A 0.70 100M 90 Sh A 0.62 167M 95 Sh A 0.55 315M 99 Sh A 0.23 Indica ve values, diﬀerent according to the support Property bonding Strathane other materials A'er degreasing and abrading the surfaces, Strathane can be bonded with a 2component epoxy adhesive or cyanoacrylate. We recommend LOCTITE 330 By heat bonding a'er a speciﬁc treatment of...

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Water resistance Depending on the type, polyether elastomers are resistant to the eﬀects of water immersion and have excellent long-term stability in water up to 50 °C. Use in hot water above 80 °C is not recommended for standard systems. Water absorp on is very low, 0.3 to 1.0 % by weight. Chemical resistance Strathane is a material that is generally resistant to chemicals. Depending on our formula ons, M/R/U series, polyether or polyester, we can communicate the speciﬁc resistance of each chemical component. Radia3on resistance Strathane elastomers are considered to have a beEer resistance...

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Preload spring Handling roller Scraper with aluminium Wheel high speed longboard Handling dolly

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Damper Bonded with metal Fexibe damper Fixing item Support & Protec on Vehicule body part Wheel handling Gearbox support Engine support

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Resistance to oils solvants chemicals ac ng Superior abrasion resistance Hardness tolerance Wide range of hardness Post curing in owen Tolérance dureté Op ons R-UV Uv resistance R-AA Up grade abrasion loss R-AF Fire resistance R-AS An stas c Op onnal color Regarding quan3ty STRATHANE® 450 R Speciﬁc gravity Tear strenght without nick Tensile strenght Elonga on break DIN 53504 The following informa on are value of results of tests are given in good faith without warranty CEF POLYMERES WWW.CEF-SA.COM

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Resistance to oils solvants chemicals ac ng Superior abrasion resistance Op mum tear resistance Wide range of hardness Hot cas ng moulding Hardness tolerance Post curing in owen Op ons R-UV Uv resistance R-AA Up grade abrasion loss R-AF Fire resistance R-AS An stas c Speciﬁc gravity Tear strenght without nick Abrasion loss ISO 4649 Fric on coef The following informa on are value of results of tests are given in good faith without warranty

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Polyester 4 componants Hot cas ng Post curing in owen Hardness tolerance Very good dynamic proper es Good resistance to internal heat Op on High resilience Other color STRATHANE® 70 U Speciﬁc gravity Temperature Tear strenght without nick Tensile strenght Elonga on break DIN 53504 The following informa on are value of resluts of tests are given in good faith without warranty CEF POLYMERES WWW.CEF-SA.COM

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.Approval Food contact Water ACS Polyester 3 componants Hot cas ng Post curing in owen Hardness tolerance Speciﬁc gravity Temperature Tensile strenght Tear strenght without nick The following informa on are value of resluts of tests are given in good faith without warranty CEF POLYMERES WWW.CEF-SA.COM

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Creep value compression max The value on the table are the maximum spring strocke on the original height For security service choise a load more higher Sv The creep factor of the spring depend of the % of compression, ambient temperature and also typ of raw material. The value given result of our experience. Les données indiquées renvoient à des valeurs concrètes, obtenues à 104 alternances. Value available for Strathane series : M / R / U / UR 90 Sh A +/- 30 % (factor 1,3) M / R / U / UR 80 Sh A +/- 20 % (factor 1,2) M / R 70 Sh A and less +/- 10 % (factor 1,1) Preload (Sv) In order a posi ve...

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Frequency of stockes The number of races/minute in dynamic con nuous use must be always taken into account. An increase of the speed corresponds to a decrease of the % of compression. By staying below the limit value, the longevity increases because of the low hea ng (Hysteresis). Temperature resistance The opera ng range is – 20° C to + 80° C For short term – 40° C to + 120° C are Possible. Any material subjected to a deforma on and an internal fric on warms up. The characteris cs of the spring are determined by the module of elas city according to the temperature and geometrical shape The elas...

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CEF polyurethane

CEF polyurethane

Catalog excerpts

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