Anhui Parker New Material Co.,Ltd
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insulation blanket manufacturer
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Custom Sewn Rectangular Bellows for Machine Protection

BSTFLEX Sewn Rectangular Bellows are custom flexible protective covers designed for machine ways, linear rails, ball screws, lead screws, actuators and other moving components with square or rectangular profiles. Their accordion-style fabric construction expands and compresses with machine travel while helping protect critical parts from dust, metal chips, abrasion, oil, coolant, sparks and heat.

Each rectangular fabric bellows can be customized in width, height, extended length, compressed length, stroke, fold geometry, material and mounting configuration. Available materials include coated nylon, silicone coated fiberglass, PTFE coated fiberglass, aluminized fiberglass and other technical fabrics for standard or high-temperature applications.

Custom flanges, mounting plates, reinforced ends, zipper or split designs are available for CNC machines, automation equipment, lifting systems and OEM industrial machinery.

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Product Detail

Sewn Rectangular Bellows

BSTFLEX Sewn Rectangular Bellows are custom-fabricated protective covers designed for linear rails, machine ways, lead screws, ball screws, lifting mechanisms, actuators and other moving components with square or rectangular geometry. The flexible accordion construction extends and compresses with machine movement while helping isolate critical components from dust, metal chips, abrasive particles, oil, coolant, sparks and heat.

Unlike standard molded bellows, rectangular fabric bellows can be engineered around the actual machine envelope, stroke and installation space. Width, height, extended length, compressed length, fold geometry, mounting arrangement and fabric construction can all be customized for OEM equipment, replacement projects and special-purpose machinery.


Custom Rectangular Bellows Construction

Each application has different movement and clearance requirements. BSTFLEX can manufacture sewn rectangular bellows according to customer drawings, equipment dimensions or existing samples.

Typical customization includes:

Specification Available Options
Bellows Shape Rectangular, square or custom
Inside Width Custom
Inside Height Custom
Outside Dimensions Custom
Extended Length Custom
Compressed Length Custom
Stroke According to machine travel
Fabric Selected according to environment
Mounting Flange, plate, collar, clamp or custom
Closure Closed, zipper, hook-and-loop or custom
Reinforcement Optional
Production Prototype and OEM production

The fold depth and number of convolutions are selected according to the required extension ratio, compressed space and operating movement.


Material Options

The correct material depends on more than temperature alone. Abrasion, coolant, oil, sparks, radiant heat, chemicals and movement frequency should all be considered.

BSTFLEX can manufacture rectangular fabric bellows using materials such as:

Coated Nylon Fabric

Suitable for general machine protection where flexibility, abrasion resistance and contamination control are required.

Silicone Coated Fiberglass Fabric

Designed for elevated-temperature environments, hot machinery and applications exposed to sparks or radiant heat.

PTFE Coated Fiberglass Fabric

Suitable where higher temperature capability, chemical resistance and a low-adhesion surface are required.

Aluminized Fiberglass Fabric

Recommended for equipment located near furnaces, foundries, hot processing lines or other radiant heat sources.

Custom Technical Fabrics

Other material combinations can be evaluated according to the actual working environment.


Machine Way and Linear Rail Protection

Rectangular bellows are particularly suitable for protecting exposed machine ways and linear rails.

During machining or automated production, exposed guide systems can encounter:

  • Metal chips
  • Grinding debris
  • Dust
  • Oil
  • Coolant
  • Sparks
  • Abrasive particles

A custom machine way bellows helps create a flexible barrier around these moving surfaces while maintaining the required travel.


CNC and Automation Applications

Sewn rectangular bellows can be integrated into:

  • CNC machining centers
  • Milling machines
  • Linear positioning systems
  • Industrial robots
  • Automated assembly equipment
  • Packaging machinery
  • Lift mechanisms
  • Material handling equipment
  • Special-purpose machines
  • Machine tool retrofits

They are especially useful where the protected area has a rectangular profile or where a round bellows would not fit the available machine space.


High Temperature Rectangular Bellows

For machinery operating near furnaces, welding cells, foundry equipment or hot production processes, BSTFLEX can manufacture high temperature sewn rectangular bellows using heat-resistant technical fabrics.

Depending on the application, suitable materials may include silicone coated fiberglass, PTFE coated fiberglass, aluminized fiberglass and other engineered fabrics.

The material should be selected according to:

  • Continuous operating temperature
  • Short-term heat exposure
  • Radiant heat
  • Spark or hot-particle exposure
  • Oil and coolant
  • Chemical contact
  • Abrasion
  • Flexing frequency


Mounting and Installation Options

Different mounting arrangements can be incorporated into the bellows design, including:

  • Rigid mounting plates
  • Fabric flanges
  • Reinforced end panels
  • Clamp-mounted ends
  • Grommets
  • Hook-and-loop closures
  • Zipper openings
  • Custom fastening systems

For equipment that cannot easily be dismantled, split or zippered constructions can simplify installation and maintenance.


Typical Applications

BSTFLEX Sewn Rectangular Bellows can be used for:

  • Machine ways
  • Linear rails
  • Ball screws
  • Lead screws
  • CNC axes
  • Lift tables
  • Linear actuators
  • Automated machinery
  • Robotic equipment
  • Foundry machinery
  • Metalworking equipment
  • Special industrial machinery


Information Required for Custom Production

For accurate quotation and design evaluation, please provide:

  1. Inside width
  2. Inside height
  3. Maximum allowable outside width and height
  4. Fully compressed length
  5. Fully extended length
  6. Required travel or stroke
  7. Mounting dimensions
  8. Operating temperature
  9. Type of contaminants or environmental exposure
  10. Drawing, photograph or existing sample

BSTFLEX can develop prototype and OEM sewn rectangular bellows according to drawings, dimensions or application requirements.


Why Choose BSTFLEX

BSTFLEX combines custom fabric fabrication with experience in industrial thermal-protection materials. This allows us to manufacture both general-purpose machine bellows and high-temperature rectangular bellows for more demanding operating environments.

Custom dimensions, special materials, mounting configurations and OEM production are available.

For a new application, send us the machine dimensions, required stroke, operating environment and photographs or technical drawings for evaluation.

Send A Message

If you have questions or suggestions, please leave us a message,we will reply you as soon as we can!

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