【No drive required・Ultra low torque】The shaft is fixed, only the rubber rotates! Next-generation rubber roll that prevents scratches and wrinkles on films and non-woven fabrics 《Shipping available in as little as 3 days》
The pioneer of expander rolls, Osaka Textile Machinery, has developed the "Outer Wheel Rotating Type OS Rubber Straight Roll." Unlike conventional iron core direct-wound rolls, it adopts a unique structure where "the shaft is fixed and only the rubber sleeve (outer wheel) rotates." Internal bearings reduce rotational resistance to the limit. It smoothly "follows" the sheet's conveying force without the need for a motor or other driving devices. It is ideal for preventing "scratches" and "slips" in high-performance films, non-woven fabrics, and paper processing lines that are sensitive to tension. **Features** Incredible low torque performance: It rotates smoothly even with weak tension, minimizing the load on the product. Easy installation and replacement: Simply fix the shaft. No need for motors, complex bearing designs, or electrical work. Replacing existing lines or adding test lines is easy. Functional surface processing: Grooving (helical or parallel) and polishing can adjust grip and air release properties. Adaptable to harsh environments: Material selection such as fluororubber and corrosion-resistant specifications can be produced for acid-based chemical lines and special environments. Emergency response service: For φ100mm (EPDM) specifications, we have established a rapid delivery system that can ship within 3 to 5 days at the shortest.
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basic information
【Outer Wheel Rotating Type OS Rubber Straight Roll Specifications】 ■ Structure: Bearing-integrated, outer wheel rotating method. The shaft is fixed, and only the rubber sleeve rotates. No drive is required, and it follows with ultra-low torque, preventing scratches and wrinkles on the product. ■ Possible Sizes and Performance: - Outer diameter: φ50mm to φ125mm - Length: Up to 2,500mm - Speed: Up to 350m/min ■ Material and Processing: - Rubber materials: EPDM (standard), NBR, urethane, silicone, etc. Sleeve replacement is possible. - Surface processing: Polishing (grip adjustment), grooving (air release). *Crown processing is not possible. - Options: Teflon tube coating. ■ Installation Method: Shaft fixed type (if replacing from an existing shaft rotating roll, modifications such as fixing the shaft to the frame are necessary). ■ 【Fast Shipping in 3 to 5 Days】Immediate Delivery Service: Short delivery times are possible only for the specifications below. - Size: Limited to outer diameter φ100mm - Material: EPDM (hardness 50° to 60°)
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Applications/Examples of results
【Applications and Adoption Results】 Ideal for processes that dislike damage to products, as it allows for smooth following without the need for a drive mechanism. High-Performance Film: Prevents air entrapment with groove processing. Adjusts grip strength through polishing to eliminate slipping and wrinkles. Non-Woven Fabric, Paper, Printing: Achieves low-tension transport due to extremely low rotational resistance. Prevents "stretching" and "breaking" of ultra-thin materials. Special Environments (Acids and Chemicals): Features a fixed-axis design that reduces the risk of corrosion on metal parts. Combined with chemical-resistant rubber (such as fluorine) for extended lifespan. 【Installation Roles】 Used as guide rolls, touch rolls (pressing), liquid removal rolls, and free rolls for replacing or expanding existing lines.
Company information
We are Osaka Senshoku Kikai Co., Ltd., the pioneer and first manufacturer to domestically produce "Expander Rolls" in Japan. We provide fundamental solutions to eliminate "wrinkles," "shrinkage," and "slippage" in Roll-to-Roll web handling processes for films, metal foils, and non-woven fabrics. [Our Core Strengths] ◆ Japan's Only "Precision Curved Grinding" Our unique technology enables precision grinding while the roll is in its curved state. This eliminates vibration even on high-speed lines for ultra-thin films, dramatically improving your production yield. ◆ Ultra-Low Torque "Drive-less Design" No motor required. Our rolls rotate smoothly driven solely by the web's conveying force, effectively preventing slip scratches on your products. ◆ "Special Materials" & "Retrofitting" Fully compatible with special materials such as "fluorine rubber" (FKM), which is essential for high-temperature and adhesive lines. We also have an extensive track record of replacing/retrofitting other manufacturers' flat-type rolls with our curved rolls. ◆ Repair & Refurbishment for All Brands We provide repair and restoration services for expander rolls from any manufacturer, both domestic and international. [Proven Track Record] Since our founding in 1951, our cutting-edge technology has been featured on major national TV news programs and exhibited at the Expo 2025 Osaka, Kansai. Beyond standard catalog specifications, we promise to offer the optimal proposals and solve your line's most difficult challenges. Please feel free to contact us.
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