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Components Accessories include stepless ejector sleeves

Editor: Eric Culp

A line of cooling deflection baffles is said to show improvement over brass versions.

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The company said it can also manufacture any kind of special parts for moulds.
The company said it can also manufacture any kind of special parts for moulds.
(Source: Rainer Knarr)

Rainer Knarr offers a full range of mould accessories meeting German and European standards, including the patented stepless ejector sleeves equipped with a conical changeover between the free and guided section. Due to the conical bore in the sleeve the ejector pin is always contrived into the guided section, avoiding any risk of damage, the company said.

The new line of cooling deflection baffles is designed to safeguard a continuously balanced cooling of the mould, which beats conventional baffles made of brass, Knarr added. The company has also added ejectors for outline pins made of hot-working steel, hardened to around 53 HRc. In order to meet the mould maker’s demand for precision, these pins feature a g6 tolerance even underneath the head without the known bulge conditional on head-forging, Knarr said. It added that the ejectors can be nitrided or coated after machining in order to achieve a high surface hardness or low adhesion to the plastics.

Other parts offered by Knarr include round and stepped ejector pins, flat ejector pins with corner radius, flat ejector pins with extra-long blades, sprue bushings, interlocks, date stamps and a range of other products. It said it can also manufacture any kind of special parts for moulds.

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