Capital King Produced high-quality Rubber Rollers, (New & Re-Refurbished of old Rubber Rollers) for machinery used in the Paper Industry, Textile Industry, Steel Industry, Plywood Industry, Tannery industry, Packaging industry and Printing industry. After a long period of research and market assessment, We are one of the most esteemed names in the manufacturing and supplying industry of a superlative array Rubber Rollers. These rolls are designed in accordance with the industrial standards. We do not make compromise in terms of quality and make use of premium quality rubber for carrying out the manufacturing processes of these rolls. These rolls are available in different grades and dimensions as per the requirement of the clients.

Types of conveyor belts

• Printing Rollers
• Dominant
• Heidelberg
• Kba Rapida
• Komori Lithrone
• Man Roland
• Mitsubishi
• Sakurai

• Packaging Rollers
• Gravure Printing Roller
• Solvent Lamination Roller
• Silicon Roller
• Flexographic Rubber Roller
• M.S. Steel Roller Mirror Finish
• demand
• profit

• Industrial Rollers
• Paper Industry
• Steel Industry Rolls
• Tissue Industry
• Textile Industry Rolls
• Plywood Industry
• Tannery Industry
• Glass Industry

SPCIFICATION OF RUBBER ROLLERS FOR OFFSET PRINTING

1. Scope- Specifies requirements pertaining to rubber rollers for use in offset printing machines of various sizes and types.

2. Types - Rubber rollers used as forme, transfer or intermediate, ductor or vibrator rollers for inking and damping systems of offset printing ~machines.

3. Nomenclature - For the purpose of specification, the various parts of a roller shall be termed as indicated in Fig1.

3.1 In case of a built-up construction, the shell ( tube) fitted with the flanged shanks at both ends either by welding or by shrink fitting shall be termed as the roller blank. WELDMENT

4, Material

4.1 Spindle

4.1.1 Solid spindles shall be made from mild steel conforming to IS : 226-1975 ‘Specification for structural steel ( standard quality) (first revision )’ or Grade 1 of IS : 7283-1974 Specification for hot rolled bars for production of bright bars‘.

4.1.2 Hollow spindle shall be made from steel tubes conforming to IS : 3601-1966 ‘Specification for steel tubes for mechanical and general engineering purposes’.

4.2 Covering- For rubber rollers used as inking rollers, the material for covering shall be good quality nitrile ( acrylo-nitrile butadyne) rubber of shore A hardness as indicated in Table 1, with natural resistance to cleaning material, namely, kerosene or petrol as well as to solvents used in printing inks, in as much as the change in form, shape or hardness and no excessive wear lakes place when in regular contact with such media.

4.2.1 For rubber rollers for use as water rollers, the rubber used shall have high resistance to alcohol and water and shall be of shore hardness as indicated in Table 1.

TABLE 1 HARDNESS FOR RUBBER ROLLERS
TYPES	Shore A Hardness
Ink forme roller	25 to 32
Transfer rollers	28 to 32
Ink vibrator rollers	28 to 32
Damping forme rollers	22 to 26
Damping vibrator rollers	22 t0 26

5. Dimensions

5.1 As for diameter and length of the blank, sizes shall be generally guided by the design parameters of the printing machine, with special attention to high strength in bending,

5.2 Built-up roller blanks shall have a minimum tube wall thickness of 4 mm. 5.3 Spindle surface shall be rough-turning finished in the form of a helix with a close pitch, 0.5 to 1 mm to ensure a good holding of the outer covering.

5.4 Minimum thickness of covering shall be 7 - 1 mm up to 50 mm diameter of rubber rollers +0 10 - 1 mm above 50 mm diameter of rubber rollers +o

6. Tolerance

6.1 Dimensional tolerance shall be on diameter : + 0.1 to + 0.6 mm on length : f3mm

6.2 Concentricity - O-1 mm total indicator reading ( TIR ), checked at centre of the covering length and at 2 ends of covering, with respect to the axis of the journals.

6.3 Taper - 0.05 mm over a length of 1000 mm with ~respect to axis of and journals.

7. Workmanship - For rollers operating at higher speed ( above 2 m/s peripheral speed) the roller blanks shall preferably-be dynamically balanced prior to rubberizing.

8. Finish

8.1 Damping rollers shall be of fine-ground finish. grinding traces which are visible but not perceptable, Light grinding stone flicks, light chatter marks or by touch, are permissible. Imperfections in the surface, that is, holes, ridges, swelling, turning marks, or embedded foreign particles shall not be acceptable.

8.2 inking rollers shall have a good grinding finish followed by a polishing operation to give it a velvet like surface. It shall be free from all imperfections and defects as mentioned in 8.1

9. Test

9.1 Shore hardness testing shall be done at three points on the periphery 120” apart at three positions - one at the centre of the covering length and at two other points approximately 1110 of covering length from either end.

9.2 Since hardness can be affected by temperature variation, the same test temperature shall be used throughout any one test or series of tests for comparison. Test temperature recommended is 27 f 2°C.

9.3 Rubber rollers shall not loose its form or get damaged at working temperature up to 60°C.

10. Treatment - All exposed metal faces of the core shall be given a suitable rust preventive coating.

11. Marking - Manufacturer’s name, part number, date of manufacture and roller diameter shall be stamped in a convenient place on the periphery of shank.

11.1 iSI Certification Marking - Details available with the Indian Standards Institution.

12. Preservation and Packing

12.1 Rollers shall be individually cleaned and covered with opaque paper and packed in corrugated sheets before packing in wooden boxes, with journals resting in special fittings to ensure against any damage to the covering as well as to any loss of geometrical accuracy, These shall be stored either horizontally or vertically.

12.2 For better preservation, rollers shall be stored in the dark with a relative humidity of about 65 percent.

Our development and success is founded on technical expertise and an ongoing commitment to excellence in customer service. We work closely with our clients, taking care to understand their requirements and to implement the optimum solution.We have utilised our technical knowledge of rubber technology to provide a wide range of high quality rubber for discerning customers worldwide. Driven by customer demand, we are constantly seeking to expand and improve our range of products and services.Specialists in new and refurbished ready to run rubber rollers.

• Rollers Area
• Ink Transfer Rollers
• Ink Ductor Rollers
• Ink Fountain Rollers
• Ink Rider Rollers
• Ink Oscillator Rollers
• Ink Vibrator Rollers
• Water Ductor Rollers
• Water Pan Rollers
• Water Fountaion Roller
• Water Rider Rollers
• Foam Rollers
• PU Rollers