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Fenner
Fenner Drives
Prodesco

Machined / Molded Pulleys

Comparisons & Advantages

Fenner Precision uses a variety of materials to manufacture our pulley products. Please view the Properties chart below for details.

Pulley Material Properties

  Modulus of Elasticity Yield Strength Poissons Ratio Flexural Modulus CTE Density Hardness Shrinkage Specific Gravity
Materials psi x 103 ksi   ksi μin/in-°F lb/in3 Rockwell in/in g/cc
Plain Carbon Steel 29 30-70 .29 na 7 0.284   na 7.872
300 Series Stainless 28 29.7 .25-.30 na 9.22 0.29 80B na 8.03
400 Series Stainless 29 45 0.3 na 5.5 0.282 80B na 7.8
Aluminum 6061T6 10 40 0.33 na 13.1 0.0975 40A na 2.7
Brass 15-17 14.1-60 .307-.375 na 11.3 0.306 na na 8.47
Acetal .20-.46 5.37-10.0 0.35 203-406 6.67-90 .0466-.0517 50-88M .002-.025 1.29-1.43
Acetal 10% GF .41-.73 6.9-12.0 na 434-595 27.2-33.3 .0517-.0578 110R .007-.016 1.43-1.6
Nylon .16-.45 5.8-12.5 0.39 131-493 36.1-83.3 .0372-.0419 60-87M .006-.016 1.03-1.16
Nylon 6/6 10% GF   13.1-17.4 na 276-798 15-27.2 .0419-.0444 80-95M .003-.012 1.16-1.23
Polycarbonate .23-.35 8.5-10.2 0.38 261-600 17.8-66.7 .0423-.0524 65-76M .003-.0075 1.17-1.45
Polycarbonate 10%GF .45-.77 8.7-10.4 na 334-769 18-33.3 .0444-.0484 75-85M .0025-.007 1.23-1.341