Farrel Rubber/Plastic Laboratory Calender Mill – Inverted "L" 4-Roll, Adjustable Knives

🔹 Manufacturer Info

• Manufacturer: Farrel Corporation

• Model: 4-Roll Inverted "L" Laboratory Calender Mill

• Serial Number: 73A1499

• Industry Reputation: Farrel is a respected name in heavy industrial machinery, specializing in calenders, mixers, and compounding systems for rubber and plastics.

🔹 Description

This used Farrel 4-Roll Inverted “L” Laboratory Calendar Mill is engineered for precision processing of rubber and plastic materials in R&D or pilot production environments. Featuring 6" diameter x 13" length rolls, this calender supports up to 500°F roll temperatures and operates at speeds of up to 35 RPM. The center roll is fixed, while the top, bottom, and offset rolls are fully adjustable, providing optimal control and versatility. The machine integrates full herringbone even-speed and friction gears, adjustable nylon infeed guides, and twin knives on the bottom roll for precise sheeting and trimming. Equipped with SCR drive and dynamic braking, it also includes an operator station with variable speed controls powered by a 7.5 HP variable speed motor (3/460V). Designed for lab or small batch operations in the rubber and plastics industries.

🔹 Specifications

• Roll Configuration: 4-Roll Inverted “L”

• Roll Size: 6" Diameter x 13" Length

• Max Roll Temp: 500°F

• Speed: Up to 35 RPM

• Center Roll: Fixed

• Top, Bottom, Offset Rolls: Adjustable

• Gears: Full herringbone even speed (1 side), herringbone friction (other side)

• Infeed Guides: Nylon adjustable

• Knives: (2) Adjustable twin knives on bottom roll

• Safety Features: Cable safeties on both sides

• Drive: SCR with dynamic braking

• Motor: Variable speed 7.5 HP

• Voltage: 3 Phase / 460V

• Control Station: Variable speed operator interface

• Serial #: 73A1499

🔹 Applications

• Rubber and plastic material testing

• R&D laboratories for new compound development

• Pilot production of thin rubber/plastic sheets

• Mixing, sheeting, and trimming small batch compounds

• Thermoplastic and thermoset material trials

• Calendering elastomers in lab-scale production

• Evaluating compound performance under high temp and pressure

• Process simulation before full-scale production

• Precision sheet making in rubber compounding

• Educational and training environments for processing techniques

🔹 What Products Would This Be Used For?

• Rubber test sheets

• Plastic test films

• Thin elastomer sheets

• Laminated rubber compounds

• Vulcanized rubber samples

• Silicone material processing

• PVC or TPE sheeting

• Composite materials prep

• Development of calendered coatings

• Material durability testing sheets