Round bellows BSTFLEX

PTFEmulti-materialcustom

Overview
BSTFLEX Sewn Round Bellows are custom flexible protective covers designed for hydraulic cylinder rods, ball screws, lead screws, shafts, actuators and other moving machine components. The pleated fabric expands and compresses with equipment movement while shielding critical parts from dust, metal chips, abrasion, oil, coolant and heat.

Custom Construction
Specification — Available Options
Shape — Round / Cylindrical
Inside Diameter — Custom
Outside Diameter — Custom
Extended Length — Custom
Compressed Length — Custom
Stroke — According to application
Fabric — Selected according to operating conditions
End Configuration — Collar, flange, clamp or custom
Closure — Closed, zipper, hook-and-loop or custom
Internal Support — Optional
Production — Prototype and OEM quantities

Material Options

• Coated nylon fabric: suitable for general machine protection where flexibility, abrasion resistance and contamination control are required.
• Silicone coated fiberglass fabric: recommended for elevated-temperature environments and machinery exposed to heat, sparks or hot surfaces.
• PTFE coated fiberglass fabric: suitable where temperature resistance, chemical resistance and a low-adhesion surface are needed.
• Aluminized fiberglass fabric: used where radiant heat reflection is required around furnaces, foundry equipment, exhaust components or other high-temperature processes.
• Other technical fabrics: additional constructions developed according to temperature, oil, coolant, chemical, abrasion and environmental requirements.

Hydraulic Cylinder Rod Protection
Round sewn bellows form a flexible protective barrier around hydraulic or pneumatic rods while allowing extension and retraction. Typical protected components include:

• Hydraulic cylinder rods
• Pneumatic cylinder rods
• Linear actuators
• Lifting cylinders
• Industrial positioning systems

Ball Screw and Lead Screw Protection
Sewn round bellows isolate ball screws and lead screws from contaminants that affect positioning accuracy and movement reliability. They shield against:

• Metal chips
• Grinding dust
• Coolant
• Oil contamination
• Abrasive particles
• General workshop debris

Shaft and Actuator Protection
Round fabric bellows protect rotating or reciprocating shafts, splines, spindles, guide rods, telescoping assemblies and mechanical linkages, enabling repeated movement without rigid enclosures.

High Temperature Sewn Bellows
For machinery near furnaces, hot process equipment, exhaust systems or radiant heat sources, bellows can be manufactured from heat-resistant textiles such as silicone coated fiberglass, PTFE coated fiberglass or aluminized fiberglass. Fabric selection should consider radiant heat, direct contact temperature, spark exposure, oil and coolant exposure, abrasion, chemicals, mechanical cycling and indoor/outdoor service.

Mounting Options

• Fabric collars
• Clamp-mounted ends
• Flanged ends
• Reinforced end sections
• Grommet mounting
• Custom fastening systems

Applications
Suitable for CNC machines, machine tools, hydraulic and pneumatic equipment, industrial automation, robotics, lifting equipment, foundry machinery, metal processing equipment, packaging machinery, material handling systems and special-purpose machines.

Information Items for Custom Bellows

• Inside diameter
• Maximum allowable outside diameter
• Fully compressed length
• Fully extended length
• Required stroke
• End mounting dimensions
• Operating temperature
• Type of contamination or environmental exposure
• Movement frequency
• Drawing, photograph or existing sample

Technical specifications

• Brand: BSTFLEX
• Product type: Sewn Round Bellows (custom-made)
• Shape: Round / Cylindrical
• Materials available: Coated nylon, silicone coated fiberglass, PTFE coated fiberglass, aluminized fiberglass, other technical fabrics
• End configurations: Collar, flange, clamp or custom
• Closures: Closed, zipper, hook-and-loop or custom
• Internal support: Optional (wire support available for large diameters)
• Production volumes: Prototype and OEM quantities
• Minimum order quantity shown on page: 1
• Typical protections: dust, metal chips, abrasion, oil, coolant, heat, sparks