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Robart - ROBQ0631 ROB631RS 631RS 758936631026 0758936631026
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Robart 85 Degree Pneumatic Heavy Duty Mains
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Robart 85 Degree Pneumatic Heavy Duty Mains
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Tech Notes
This is a set of two Robart 630RS Robostrut Ready 85 Retracts
for planes up to 24lbs (10.9kg). These are for the Main Gear only.


Constructed with heat treated aluminum alloy frames and trunions,
these gear are furnished with 1/2" dia. 4130 alloy steel tubular
They offer long dependable service for large aircraft flying off
grass or paved runways
Powered by a 1/2" bore triple sealed Robart air cylinder and feature
positive up and down locks
Easily adjusted for toe-in with the unique Robart "split-lock"
trunion. Available in standard 90, 85 Main Gear, and 90, 100,
105, and 110 Nose Gear retract angles, with straight or offset


Two retracts with pressure cylinders
One instruction sheet


Installation of air system


Length: 4.5" (114.3mm) total length
Width: 2" (50.8mm) at the mounts
Height: 1.37" (35mm) total from bottom of mounts to top of unit


For use with any 7/16" or 1/2" diameter Robostrut

tlw 6/22/07

– If you need more information, use these Robart resources –
Web Site:
Phone: 630-584-7616
  Postal Address:
625 N. 12TH STREET

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