Gortite® Sewn bellows are manufactured from heavy-duty elastomer-coated fabric stitched with nylon or specialty thread. A liquid coating can be added to seams to extend life in severe applications by reducing the thread exposure to the environment or to limit moisture leakage. Available in any size or shape (round, oval, box, way cover, etc.) without tooling charges.
Sewn bellows help keep abrasive grit, impinging chips, and coolant off of machine ways and ball screws. Sewn bellows boots are ideal for protecting hydraulic cylinder rods, shafts and splines. Using a bellows cover is essential for mitigating damage to actuators and motion components, thus maintaining uptime.
Flat / Way Cover
Round / Oval
Rectangular or tapered
Machine bellows: way covers and linear rail protection
Cylinder boots: hydraulic cylinder protection
Screw or spindle protection; ball screw cover, acme or lead screw cover
Dust covers: protection for robotic arms or commercial equipment
Bellows boots: protection for shifts and joysticks
Lift table skirting: protection around base of scissors lift mechanism
Solution Spotlight: Bellows Boots for Hydraulic Cylinders
Large crane rigs often feature hydraulic cylinders, which are required to operate with long service life between maintenance and inspection periods.
The original bellows in this application were not lasting due to sagging.
Dynatect was brought in to engineer a better bellows design which included stiffer neoprene nylon, a better extended to retracted ratio, and easier installation.
Dynatect provided a durable sewn bellows designed to withstand outdoor conditions and heavy grease lubricant from within.
The zipper feature is essential for installation and future access.
Advantages of Cylinder Boots
Reduce frequency of shaft seal replacements
Prevent rod scoring
Eliminate nicking of shafts and ball screws
Protect against impinging chips
Guard against grit abrasion
Shield from corrosive splatter
Bellows shown below is “4 stories” tall (drilling equipment)
Specialty: Ask Dynatect about expanded temperature ranges, chemical resistance, or flame retardant requirements
Zipper (for installation)
Tie-strips (to limit cover stretch)
Grommets (For use with supports or guide rods)
Internal guides/inserts (for use with rotating shafts/ball screws)
Mounting clamps (for collar ends)
Back-up plates (mounting support for flange ends)
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