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Bernardo  |  SKU: 44-10312

HSSE M30 Cobalt Tapping Insert

Business solution up to 30 installments

Delivery and Shipping

At Krollit, we guarantee a safe and reliable shipping process. Orders are handled with the utmost care and traceability until delivery.

For international shipments, please send your request via the dedicated contact form.

Upon delivery, always sign the delivery note with the words “subject to inspection” to allow for proper handling of any irregularities or discrepancies in the product.

Our goal is to ensure you receive prompt service and a worry-free shopping experience.

Description

HSSE Cobalt Tapping Insert M30 — for threading steel, stainless steel, aluminum, and non-ferrous metals. Made in Austria, distributed in Italy by Krollit — official Bernardo distributor since 2007.

  • Tap Diameter: M30 (Ø 30 mm)
  • Metric Thread Pitch: 3.5 mm
  • Material: HSSE (high-speed steel with cobalt)
  • Compatibility: Bernardo TM and STG series tapping machines
  • Standard: DIN 371 / DIN 376

Workable Materials and Limitations

Material Suitable Notes
Mild Steel S235/S275 Yes Standard speed, no issues
Stainless Steel AISI 304/316 Yes Reduce speed by 50%, abundant cutting fluid
Aluminum and Alloys Yes Maximum speed, specific aluminum oil
Cast Iron Yes Dry cutting or with compressed air
Steels over 1,000 N/mm² No Require specific carbide inserts

Technical Specifications

Specification Value
Thread Size M30
Metric Thread Pitch 3.5 mm
Insert Material HSSE (high-speed steel cobalt)
Standard DIN 371 / DIN 376
Max. Material Strength 800 N/mm²

Logistics

Original spare parts available with 3–5 business day shipping. Customer support in Italian available.

Frequently Asked Questions

What is an HSSE insert and how does it differ from standard HSS?

HSSE (High Speed Steel with Cobalt) is high-speed steel with added cobalt (5–8%). Cobalt increases hot hardness and wear resistance: HSSE inserts better withstand the temperatures generated by tapping tough materials such as AISI 304 stainless steel, chrome-molybdenum steels, and hard cast irons. On mild steel and aluminum, the difference compared to standard HSS is minimal; on stainless steel and hard materials, the tool life can be 3–5 times longer.

Is this insert compatible with my Bernardo tapping machine?

Bernardo HSSE inserts are compatible with TM and STG series tapping machines. Verify your machine's spindle taper (GT 12 or GT 24) before purchasing. For compatibility confirmation, contact Krollit. Customer support in Italian available.

What is the correct speed for tapping with an HSSE insert?

On mild steel S235: 10–15 m/min. On stainless steel AISI 304: 3–6 m/min with abundant cutting fluid. On aluminum: 15–25 m/min. Peripheral speed is calculated as: n (rpm) = (v × 1000) / (π × d). Always use cutting fluid — HSSE inserts resist heat but wear out more quickly without lubrication.

Delivery times?

Original spare parts available with 3–5 business day shipping. Customer support in Italian available.

Product safety

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