Rubber Screw Barrel

Product Description

Rubber screw barrel

With our abundant experience and superior quality products as well as excellent services, we have been recognized to be a top supplier with good reputation for 100% Original China Rubber Screw Barrel. We have now ISO 9001 Certification.

In the past of 30 years, many customers come to us with repeat orders, because EJS screw barrel stands for best quality and competitive selling price. Welcome to cooperate with us!

As a Feed Screw Manufacturers ,Rubber screw barrel was introduced to our production not long after factory establishment, each year, a large quantity of rubber screw barrel are produced for Chinese and Export market.

We make customized rubber screw barrel per customers’ drawings, and refurbishment on customers’ old screw barrel. When a new design or an improved design is needed, we have our technical people to assist you with our knowledge and over 25-year experiences on rubber.

Other than this, E.J.S produces feed screw design for customers natioanlly and internationally and always stand behind the products we produce and provide long term support for our products.

Bore diameter available for Rubber screw barrel

¢25~¢500

Surface Treatment of Rubber screw barrel

Nitrided

Hard Chrome Plating

Ceramic coated

Hardfacing / Bimetallic with Ni60, Colmonoy 56, Colmonoy 83

Quenching

Material request for rubber screw barrel

The material for rubber screw must be:

Anti-high temperature;

Anti-wearing;

Anti-corrosion;

High strength to work with high torque and high speed;

Good cutting performance;

The relief and the thermal deformation is small after heat treatment.

The material for rubber barrel include:

38CrMoAlA (DIN1.8509)

42CrMo ( AISI4140)

Stainless steel 304

Application of Rubber screw barrel

Shim and cable

Tire

Rubber profile

Rubber sheets

Rubber flooring

Inspection of Rubber screw barrel

Quality is everything, every Rubber screw barrels is strictly inspected at EJS factory before going into boxes.

Leakage test, temperature test, pressure test are usually made at our workshops when they’re requested.

Productivity of my rubber extruder is not good, can you help to improve the design of Rubber screw barrel to better the output?

YES, EJS engineer has good experiences on design of rubber screw batter, do be free to contact your sales representative for a great solution.

About E.J.S.

EJS Screw Barrels is a newly created brand name for Export business with manufacturing experiences since 1992.
A screw barrel manufacturer dedicated on producing customized screw barrel and design extruder screw barrels, injection moulding screw barrels.

Bimetallic Screw Barrels

We started to make bimetallic screw barrel at a very early age, almost the same time as the first bimetallic barrel was born in China. Now we have several types for options depending on different applications

Bimetallic Barrels
Alloy Type		EJS01 Alloy	EJS02 Alloy	EJS03 Alloy	EJS04 Alloy
Alloy Components		Fe+Ni+Cr+B (Fe:65, Ni:14, Cr8, B:3.5)	Ni+Cr+Co+B	Ni+Cr+Co+V+B	Ni+Wc+Cr+B (Ni:50, Wc:15~35,Cr:6~8, B:2.5~3.2)
Wearing Resistance		★★★	★★	★★★	★★★★
Corrosion Resistance		★★	★★★	★★★	★★★
Alloy Thickness		2~3mm	1.5~2mm	1.5~2mm	1.5~2mm
Hardness		HRC 58-65	HRC 50-58	HRC 55-60	HRC 55-65
Temperature Range		≤400	≤450	≤450	≤600
Coefficient Thermal	RT~250℃	11.0x10-6	11.0x10-6	11.5x10-6	11.0x10-6
Expansion(/℃)	RT~400℃	11.4x10-6	11.4x10-6	12.4x10-6	12x10-6
Range of Workable Length		700mm~3000mm/piece
Base Steel Vastly Used		40Cr: 42CrMo
Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good

Bimetallic Screws
Suitable for	Single Screw, Twin Parallel Screw, Twin Conical Screw
Alloy Type	Ni60	CoImonoy 56	CoImonoy 83
Alloy Components	Ni+Cr+Fe+Si (Ni:65, Cr:17, Fe:15, Si:5)	Ni+Cr+Si+Fe (Ni: 68, Cr:18, Si:5, Fe:5)	Ni+Wc+Cr+C (Ni:40, Wc:34, Cr:20, C:2)
Anti-Wearing Level	★★★	★★★	★★★★
Anti-Corrosion Level	★★★★	★★★★	★★★★
Alloy Thickness	1~1.5mm	1~1.5mm	1~1.5mm
Hardness	HRC 56-62	HRC 46~61	HRC 43-48
Applied Glass Fiber	Under 10%
Range of Workable Length	Any length needed
Base Steel Vastly Used	38CrMoAI(1.8509), 34CrAINi7(1.8550), 31CrMoV9(1.8519)
Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good

Quality Inspection

Quality is a very important step during production. For making a quality screw barrel, all tolerances should be fulfilled and all dimensions should be correct and put in records.

We provide inspection report, material certificate for every of our supplied screw barrels.

Packaging

Packaging is the last but very important step before shipping. A strong and smart packing box is also part of our quality. It is not only used to protect the screws barrels well during transportation, also provide an easy way for our customer to unpack.