HMK II Gearhead Series Combines with induction, reversible motor Part name Revolutions at 50 Hz (rpm) Revolutions at 60 Hz Allowable torque (Nm) Reduction ratio     (when attached to IH6P3N) 6H5N 300 360 0.09 1 / 5 6H15N 100 120 0.25 1 / 15 6H25N 60 72 0.39 1 / 25 6H60N 25 30 0.78 1 / 60 6H180N 8.3 10 0.98 1 / 180     (when attached to IH8P15N) 8H5N 300 360 0.43 1 / 5 8H15N 100 120 1.3 1 / 15 8H60N 25 30 3.9 1 / 60 8H180N 8.3 10 3.9 1 / 180     (when attached to IH8PF25N) 8H5FN 300 360 0.7 1 / 5 8H15FN 100 120 2.1 1 / 15 8H25FN 60 72 3 1 / 25 8H60FN 25 30 5.6 1 / 60 8H80FN 8.3 10 9.8 1 / 180 Part name IH6P3N IH8P15N IH8PF25N RH6P4N RH8P20N RH8PF25N 6H5N ● ● 6H15N ● ● 6H25N ● ● 6H60N ● ● 6H180N ● ● 8H5N ● ● 8H15N ● ● 8H60N ● ● 8H180N ● ● 8H5FN ● ● 8H15FN ● ● 8H25FN ● ● 8H60FN ● ● 8H180FN ● ● Part name Details of accessories 6H5N Bolts M4 x 45 x 4 6H15N Bolts M4 x 45 x 4 6H25N Bolts M4 x 45 x 4 6H60N Bolts M4 x 45 x 4 6H180N Bolts M4 x 45 x 4 8H5N Bolts M5 x 50 x 4 8H15N Bolts M5 x 50 x 4 8H60N Bolts M5 x 50 x 4 8H180N Bolts M5 x 50 x 4 8H5FN Bolts M5 x 50 x 4, key 8H15FN Bolts M5 x 50 x 4, key 8H25FN Bolts M5 x 60 x 4, key 8H60FN Bolts M5 x 60 x 4, key 8H180FN Bolts M5 x 60 x 4, key Note Data sheet: Document separate from catalogue.