Issue link: https://onenorgren.uberflip.com/i/555860
ACTUATORS 1 ACT-59 For further information www.norgren.com Series VT 10 Series VT uses Block-Vee Nitrile piston seal. This increases envelope dimension by 3/8" but provides lower breakaway pressure. Series ET Series ET actuators achieve their cushion effect through the normal compression of the Buna-N "shock-absorber"seals at the completion of the cylinder stroke. This compressive action absorbs the cylinder's kinetic energy and reduces the shock created by the piston striking the end caps. The measurable cushion effect of the "shock-absorber" seals provides a predictable pounds stoppable/piston speed ratio, allowing you to determine the exact weight that can be stopped at a given piston speed. Series ET actuators also help meet OSHA's noise and clean air standards. They are guaranteed to operate without lubrication for one year regardless of cycles. Non-lubricated operation is achieved by the combined efforts of an oil-impregnated sintered iron piston rod busing that lubricates the rod during normal operation, and through the use of a reinforced PTFE wear ring on the center perimeter of the piston. This ring reduces friction between the piston and the cylinder tube. 11 Wear Ring: PTFE reinforced wear ring. 12 Impact Dampening Seals: Specifically designed piston incorporates energy absorbing seals to dissipate the forces generated during impact without increasing envelope dimensions. Not available for cylinders with oversize rods. Not recommended for applications that require 100% repeatable stroke increments, or for applications that exceed the pounds stoppable. Series T Series T uses Quad Ring Buna-Ring piston seal. 1 Heads and Caps: Anodised Aluminum or black oxided steel. 2 Rod Bushing: Oil-filled, sintered iron bushing. 3 Rod Seal: Replaceable block-vee Nitrile rod seal (FPM optional). 4 Piston Rod: Hard chrome plated high tensile steel piston rod. 5 Seals: O-ring type seals. 6 Tie Rods: High yield strength tie rods. 7 Piston Seal: Replaceable quad ring Nitrile (FPM optional). 8 Piston: Machined alloy. 9 Tubing: Hard anodised I.D. aluminum tubing. Energy Absorption Capacity of Impact Dampening Seals In./Lbs of Pounds* Stoppable at Following Speeds Kinetic Energy 6 12 24 36 48 60 Size Absorbable in/sec in/sec in/sec in/sec in/sec in/sec 3/4" 1.5 32.4 8.0 2.0 .8 .41 .23 1-1/8" 3 79.2 16 4 1.8 1 .59 *Pounds must include piston and rod assembly weight 1 2 4 7 3 5 6 8 9 10 12 11 The figure above represents total stroke loss (both ends) for the pressure indicated for new cylinders. The impact dampening seals will take some compression set during operation of the cylinder and the stroke loss will decrease. To determine stroke loss for either head or cap divide the value shown by 2. Cylinder Bore PSI 3/4 1-1/16 to 1-1/8 1-1/4 1-1/2 2 2-1/2 0 .11 .12 .12 .14 .15 .17 20 .08 .09 .09 .10 .10 .12 40 .05 .06 .06 .07 .07 .08 60 .03 .04 .04 .04 .04 .05 80 .01 .02 .02 .02 .02 .02 100 0 0 0 0 0 0 Effect of Impact Dampening Seals on Total Stroke of Cylinders Series T, VT, ET Tiny Tim Non-NFPA Interchangeable