Square bellows

circularrectangularpolymer

1.1 Product Overview
The Bellow is a pleated, flexible protective cover with an integrated support frame designed to extend and retract in synchrony with machine-tool guideways, ball screws and spindles. It provides enclosed protection against chips, coolant, dust, welding spatter and high-temperature sources while minimizing installation footprint and motion resistance.

Materials

• Fabric options: PVC-coated cloth, PU-coated cloth, aramid flame-retardant fabric, TPU, PTFE (Teflon), silicone fabric, aluminum-foil fabric, anti-static fabric
• Support plate: typically PVC board
• Flange materials: carbon steel, stainless steel, aluminum, nylon (other materials on request)

Applications
Suitable for machine tools, machining centers, laser-cutting machines, automation & robotics, additive manufacturing, lifting platforms, measuring instruments, multi-material machining equipment (metal/wood), and industries such as printing, medical, cosmetics and food processing.

Mounting & Cross-section
Mounting orientation: horizontal, vertical and inclined. Cross-sections available: square, rectangular, trapezoidal, circular and special shapes to match guideways and motion paths.

1.2 Specifications (key parameters)

• Length extended (Lmax) / compressed (Lmin): customized (to be specified in quotation)
• Outer width (OW) / Outer height (OH) / Inner width (IW) / Inner height (IH): customized
• Fold height (F): 10 / 15 / 20 / 25 / 30 / 35 / 40 / 45 / 50 mm
• Number of folds (NF): customized — NF = Lmax / AP + (2–4)
• Unfolded length per fold: F × 2 − 12 mm
• Stroke: Lmax − Lmin (m)
• Operating temperature: −20 °C to 50 °C; instantaneous surface resistance ≤ 200 °C
• Travel speed (standard): ≤ 120 m/min; high-speed option ≤ 240 m/min (with rollers, scissor mechanisms and damping)
• Support plate thickness (PVC): 1.0 / 1.5 / 2.0 mm (other thicknesses on request)

Fold Height vs. Compression-to-Extension Ratio
Fold heights: 10 / 15 / 20 / 25 / 30 / 35 / 40 / 45 / 50 mm — compression-to-extension ratios: 1:2 / 1:5 / 1:7 / 1:10 / 1:12 / 1:14 / 1:17 / 1:20 / 1:22.

Assembly Process Comparison

• High-frequency welding: heat-sealing melts fabric and PVC support plate to form a permanent bond — excellent watertightness and tensile strength.
• Adhesive bonding: wider adaptability to various coatings, thick or functional fabrics — easier processing.
• Stitching: adds mechanical reinforcement, usable with functional materials for high-temperature or flame-retardant requirements.

1.3 Commercial Information
MOQ: 1 piece (customizable). Customization options include dimensions, shape, material, connection method, assembly process and accessories. Available: 8 fabric types, 3 assembly processes, 4 flange materials, optional accessories (limit strap, spring leaf, damping element, guide roller, articulated link chain, etc.).

1.4 Product Description
The Bellow combines a flexible pleated cover and integrated support frame to protect precision components with a high compression ratio and compact installation. It blocks contaminants (dust, chips, coolant, oil, spatter, heat), reducing wear, corrosion and jamming. Compatible with multiple cross-sections and mounting orientations, it supports functional materials and accessories for high-speed operation, low noise and heavy-load applications. Compared to rigid steel covers, the Bellow reduces weight and motion resistance, easing drive loads and maintenance.

Technical specifications

• Product name: Bellow
• Brand: LIONSHELL
• Fabric options: PVC-coated, PU-coated, aramid FR, TPU, PTFE (Teflon), silicone, aluminum-foil, anti-static
• Support plate: PVC board (typical)
• Flange materials: carbon steel, stainless steel, aluminum, nylon
• Fold height options (mm): 10, 15, 20, 25, 30, 35, 40, 45, 50
• Operating temperature: −20 °C to 50 °C; instantaneous surface resistance ≤ 200 °C
• Standard travel speed: up to 120 m/min; high-speed option up to 240 m/min
• Customization: shape, dimensions, materials, connection method, accessories and assembly process
• MOQ: 1 piece