Rectangular DIN Mold Ejector Pins 65 Mn , SUJ2 , HSS for Plastic mold components
- Material :SKH51(M2)(1.3343)
- Hardness : 58~60HRC
1. Material
- SKH 51-- JIS High Speed Steel ( M2 )( 1.3343 ) equivalent
- SKD 61-- JIS Die Steel ( H13 )( BH13 )( STD61 ) ( 1.2344 ) equivalen
- 65 Mn , SUJ2 , HSS , etc
2 . Hardness
- 58 to 62 HRC or depends on processing materials
3. Specifications
- Standards : MISIMI / DIN / AISI etc.
- Mounting method flange fixing
- Further dimensions, lengths and materials available on request
- Customized sizes are accepted
- Service: OEM available , and standard with stock
- Closest tolerance : shaft 0 ~ - 0.01 mm , head 0 ~ - 0.05 mm
- Polishing: can make close to Ra 0.4 standard is R0.8
- Good-quality and precision
- Nitrogen treatment to improve the hardness
- More products can be produced according to DANLY / DME / HASCO / TOHATSU / FIBRO / AGATHON / STRACK / PEDROTTI / RAYMOND / FUTABA / SANKYO / PROGRESSIVE / RABOURDIN , etc.
Application
- Plastic injection mold components
- Ejector pins are used to eject completed parts from die moulds and are commonly used in
the plastics, automotive, aeromotive and medical industries, amongst others. A blade shape is used when
there is only a small surface area on the finished part. They are also known as knockout pins, knock-out
pins or KO pins. When the mould is opened, the pins extend into the mould cavity, push the part out, and
then retract, allowing the mould to close and be refilled.
- Important factors to consider when selecting ejector pins are corrosion resistance,
durability, tolerance and tensile strength. Ejector pins can be made with a variety of treatments, which
affect the hardness of the pin. By choosing the right ejector pin for the application, the lifespan and
durability of the pin will be enhanced.
- Through hardened pins are good all-purpose steel pins that are heat-treated to be uniformly
hard throughout their diameter. They are often used for injection moulding of plastics and can be used in
cooler moulding environments below 200°C.
- Case hardened pins are nitrided pins that are suitable for die casting and can be drilled or
tapped. They can be used at temperatures above 200°C and are quite durable. They can chip when
compared to through hardened pins but have a greater life expectancy at higher temperatures.
