Linear Positioners Catalog_en-US_revA - Kollmorgen

N2 Environmental OptionsTemperature Ranges (N2 Series)Standard N2[F (C)]F Freezing[F (C)]H High Temp[F (C)]Operating–20˚F 32˚F 105˚F 140˚F 160˚F– F OptionStandard– H OptionStorage32° to 140° -40° to 185°(0° to 60°) (-40° to 85°)-20° to 105° -40° to 185°(-29° to 41°) (-40° to 85°)32° to 160° -40° to 185°(0° to 70°) (-40° to 85°)Note: F and H can not be ordered on the same cylinder.H High TemperatureThe H high temperature option allows operation in hightemperature environments (to 160°F [70°C]) by changing certainplastic parts within the cylinder to bronze.H available with:• All N2 SeriesNotes:• Consideration must be given to the operating temperatureranges of the motor, encoder, and limit switches.F Sub-Freezing Environment Option available with:• All N2 SeriesNotes:• This option increases system backlash to 0.025 inches(0.64 mm) max. for lead screw units.• Should a -F sub-freezing option lead screw unit beoperated at room temperature or above, noisy operationand increased backlash are normal.W Water Resistant OptionThe water resistant option (W) is recommended in applicationswhere the cylinder is exposed to light mist or occasionalsplashing with water or non-corrosive liquids. In additionto a sealant on all mating surfaces, a 10 foot (3 m) breathertube and fitting is provided to allow the unit to breathe from anon-contaminated dry area. Or, the customer may choose toapply positive, low pressure (2-3 psi [14-20 kPa]) dry air to thecylinder through this fitting.W available with:• All N2 SeriesNotes:• The -W option doesnot provide a waterproofcylinder. The cylindercannot be submerged orimmersed repeatedlyin water.W Breather DimensionsN2 Series CylindersL I N E A R P O S I T I O N E R SF Sub-Freezing Environment OptionIn extremely cold conditions the lubricating grease in thepositioner thickens, rubber parts (belts and stops) stiffen,and mechanical clearances tighten. This option includes twoalterations:1. Bearing grease is replaced with a less viscous lubricant.2. Lead nut tolerances are increased. Both thread clearance andpitch length are increased to allow for the varying coefficients ofexpansion between the steel lead screw and polyacetal orbronze drive nut.Back1/8 NPT Barbed Fitting3/8" OD VinylTubing2.38 [60.5]Minimum0.59 [15.0]2.62 [66.5]RightThe result is a device which can operate at these lowtemperatures, but with reduced life (due to the pre-worn leadnut surfaces).Contact Kollmorgen for more details. No change is necessaryin ball nut models since there is steel to steel contact (samecoefficient of thermal expansion).www.kollmorgen.com61