On-edge Milling Insert Blanks:
Introduction:
GEHM supply a complete product line of cemented carbide index-able insert blanks from ISO/ANSI standard insert blanks to customized insert blanks. As for on-edge milling insert blanks, in most cases this product line are bespoken to customer’s drawing. Customer can send us the finish insert design as well and we will check from our die book of insert blanks if there are existing dies for you. Normally, customer will grind all around, including the inner hole and the cutting edge from sintered on-edge milling insert blanks, hone and then coating.
Specification:
There are lots of specifications for on-edge milling insert blanks. Kennametal call these product line LNR blanks. It can be ground to finished inserts such as LNE inserts. You can download the catalogue from our website or simply send us your designed drawing or samples to review.
Shape | Style | Dimension | Grade | ||||
L | W | T | D | GK05 | GT20M | ||
| LNMC120500 | 12.70 | 12.70 | 5.56 | 4.50 | ● | ● |
LNMC130600 | 12.70 | 12.70 | 6.35 | 5.20 | ● | ● | |
LNMC150600 | 15.88 | 12.70 | 7.94 | 5.60 | ● | ● | |
LNMC150700 | 15.88 | 15.88 | 7.94 | 5.60 | ● | ● | |
LNMC190602 | 19.05 | 14.30 | 6.35 | 5.80 | ● | ● | |
LNMC250500 | 25.40 | 14.30 | 4.76 | 5.40 | ● | ||
LNMC251200 | 25.40 | 15.88 | 12.70 | 6.50 | ● | ||
LNMC270902 | 27.90 | 15.60 | 9.52 | 5.70 | ● | ||
LNMC280500 | 28.80 | 15.00 | 4.76 | 5.70 | |||
Most Popular Grade for LNR inserts blanks:
Grade | Application | Microstructure |
GU20 | 10% cobalt inside, an industry-standard for round tools. Recommended for rough and LIGHT-interrupted milling. PVD-coated for longer tool life. |
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Notes: GU20 can replace KFS64/KCM25B of Kennametal, H10F from Hyperion and HB30 from Boehlerit. There are also grades such as GK05 and GT20M, which are performance excellent for cast iron and steel material for your selection. Welcome to send us enquiry to test these grades.
GEHM Grade | Co (%) | HRA | Hyperion | Ceratizit | Kennametal | Boehlerit | Estech | ZCC |
GU20 | 10.3 | 91.9 | H10F | CTS20D | KFS64 | HB30 | RX10 | YL10.2 |
Advantage and Features of GEHM’s LNR inserts blanks:
● Complex 2D and 3D geometries
● Multi-axial press capabilities to produce complex inserts blanks
● HIP sintered to ensure excellent quality
● World class quality control on all manufacturing process, ISO9001 certified
● 6 weeks quick delivery on new items
● Annually 50 million pcs inserts batch production
Before use, all insert blanks need to be ground, ER and then coated for the best performance. The insert we are supplying are just the substrate. Toolmaker will make the post treatment. Following is one example of finished LNE inserts for your information:

Our Services for GEHM’s LNR inserts blanks:
● Material certificate shipping with carbide insert blanks.
● Sample analysis service available, including CAD engineering to carbide grades analysis
● We can provide grinding service or resource on thickness if necessary
Production Process of LNR inserts blanks:

Our workshop for LNR inserts blanks:

GEHM presence in China and abroad:

FAQ:
Q1: Do you have customers in Germany? Who?
A: Yes, we do have customers in Germany. There are lots of excellent cutting tool makers here with long history. We are very happy to supply them the cemented carbide material. They are also very happy with our delivery and consistent quality. But I am afraid that we are not allowed to offer you our client's name. We have an NDA with our customers. We have the obligation to protect their information security.
Q2: We buy carbide insert blanks from Hyperion now. What is the difference between your companies with this supplier?
A: We are TOP 1 manufacturer of cutting tool blanks in China. We have our own tungsten powder &RTP making workshop, which can offer our customers with wide choice on different grades of RTP. Besides, we have our own mold making department. OEM and ODM are welcome for custom-molded parts. With 4 million pcs output per month, we can promise you quicker delivery.
Q3: What main industry does your production aim at?
A: The key industries include aerospace, automotive, oil & gas, mining and woodworking.
Packaging & Shipping:
Shipping available by express such as DHL, FedEx and by air or by sea.

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