Anti-wear Solutions for Plastics Processing Industry

In an industry of exacting tolerances, minimal wear causes production drops. When the distance between the barrel and feed screw increases to less than twice the minimum, tests have shown production decreases by as much as 20 to 30%.

Let us show you how SERVTEK can help you improve your production by optimizing the performance of your machines with wear resistant barrels and screws designed and manufactured for resistance to abrasion, corrosion, temperature extremes and sub-micron abrasion.

Anti-wear Solutions for the Plastics Processing Industry

The following table illustrates the recommended minimum and maximum clearances for several sizes of injection feed screws:

Feedscrew Sizes	New Barrel and Feedscrew Avgerage Minimum Clearance	Used Barrel & Screw Maximum Acceptable Clearance Should Be Replaced
1 1/4" (30mm)	.005 - .008" (.127 - .203mm)	.016 - .025" (.406 - .635mm)
1 3/8" (35mm)	.005 - .008" (.127 - .203mm)	.016 - .025" (.406 - .635mm)
1 1/2" (38mm)	.005 - .008" (.127 - .203mm)	.016 - .025" (.406 - .635mm)
1 1/2" (40mm)	.005 - .009" (.152 - .228mm)	.018 - .025" (.457 - .635mm)
1 3/4" (45mm)	.006 - .009" (.152 - .228mm)	.018 - .025" (.457 - .635mm)
2" (50mm)	.006 - .009" (.152 - .228mm)	.018 - .025" (.457 - .635mm)
2 1/4" (55mm)	.006 - .009" (.152 - .228mm)	.018 - .025" (.457 - .636mm)
2 1/2" (63mm)	.007 - .010" (.177 - .254mm)	.021 - .030" (.533 - .762mm)
3 1/2" (90mm)	.010 - .012" (.177 - .304mm)	.030 - .036" (.762 - .914mm)
4 1/2" (110mm)	.010 - .013" (.177 - 330mm)	.030 - .039" (.762 - .990mm)
6" (155mm)	.013 - .016" (.330 - .406mm)	.039 - .048" (.990 - 1.219mm)

WEARSTAR Ultra High Wear Resistance Packages

Anti-wear Solutions for the Plastics Processing Industry

Running glass-filled or other abrasive resins? SERVTEK Services has the solution to prevent excessive wear on your barrel, screw and screw tips. The WEARSTAR Package is developed specifically for "high wear" processes. The WEARSTAR ultra-high wear-resistant plasticizing kit includes a super wear resistant screw, barrel, and tip assembly – all in one turnkey super molding package!

WEARSTAR wear resistant super-alloy feed screws and super-wearing alloy barrels and tips are available for installation in any make or model machine, no matter how new or old. Now any machine can process in the harshest of environments.

Choose from two unprecedented 3-Year Wear Resistance Guarantees that offer warranties against wear of more than 0.005 inches.

Wearstar Brochure & Warranties

Anti-wear Solutions for the Plastics Processing Industry

STARGUARD Doubles the Life of Any Feed Screw

Encapsulating our new or used injection feed screw with STARGUARD tungsten or chromium carbide will reduce your average amortized feed screw costs by up to 50% over non-carbide treated feed screws with common hardfacing allows or tool steels, including Stellite and Colmonoy.

STARGUARD encapsulation provides crack and porosity-free wear protection on the entire feed screw surface.

STARGUARD long life protection provides increased production efficiency and capacity, lower overall feed screw replacement expense and reduced costs associated with feed screw wear from abrasive fillers such as fiberglass.

Choose the STARGUARD that’s right for your application:

SG 1 for Abrasion Protection
SG 2 for Corrosion Protection
SG 4 for High Temperature Protection
SG 9 for Sub-Micron Abrasion Protection

Starguard Brochure and details

Anti-Wear Solutions

Are your injection molding machines losing output and product quality?

Anti-wear Solutions for the Plastics Processing Industry

Anti-wear Solutions for the Plastics Processing Industry

Anti-wear Solutions for the Plastics Processing Industry