Metric Straight Regular Punches - XNP Coating
Metric straight regular punches (XNP coating) from DAYTON are designed for stable, repeatable punching performance in die sets. The XNP surface treatment helps improve wear resistance for longer service intervals in production.
- Straight punch geometry supports consistent punching in metric tool setups
- XNP coating improves resistance to wear and helps reduce surface degradation
- Available L length range supports multiple press and die configurations
- Built for regular punch applications in progressive and transfer tooling
Specifications
1 configurations available
| L (Length) (mm) | P Dimension (mm) |
|---|---|
| 50 ～ 100 | 3 ～ 16 |
Product Guide
Application Scenarios+
These metric straight regular punches with an XNP coating are used in die sets where consistent, repeatable punching is required across long production runs. Their straight punch geometry supports stable alignment in tooling designed for metric part dimensions.
- Progressive/transfer die stations: Ideal for regular punch applications where high cycle counts can accelerate wear on uncoated tool surfaces. The XNP coating helps improve wear resistance and reduces surface degradation.
- Sheet metal trimming and piercing: Suitable for producing clean pierce profiles in die work that benefits from a fixed punch format. The available L length (50–100 mm) supports different die block and stripper/thickness stack-ups.
- Conveyorized production replacements: When interchangeability and predictable performance are important, the defined P dimension (3–16 mm) and regular punch design help engineers standardize tooling across multiple cavities.
Overall, this variant is suited for die work that needs steady punching performance and extended service intervals.
Material & Process Details+
The provided specifications confirm the XNP coating surface treatment, but they do not include the base steel grade or hardness (HRC). As a result, hardness and heat-treatment state (for example, quenched & tempered, nitrided, or pre-hardened) cannot be stated from the input data.
- XNP coating: Designed to improve wear resistance and help reduce surface degradation under repeated punching loads.
- Wear vs. toughness: In punch tooling, a stronger surface coating generally prioritizes abrasion resistance, while the underlying substrate must still provide adequate toughness to prevent chipping. Select the base material according to your expected punch loads and material abrasiveness.
- Comparing options: If uncoated or lower-wear finishes are used, tool wear typically accelerates; XNP is intended to extend usable life for regular punch duties.
Please provide the steel grade (if available) to finalize the heat-treatment and HRC discussion for this specific punch series.
Sizing & Selection Guide+
Select the punch dimensions by matching the L (Length) and P (dimension) to your die block geometry and the required punch working height. This series provides fixed ranges: L = 50–100 mm and P = 3–16 mm, which should be chosen to fit the tooling envelope and maintain alignment.
- Match working stack-up: Use the required installation height and clearance within your holder/retainer to choose an L within 50–100 mm so the punch reaches the desired penetration without bottoming.
- Control punch working size: Set the P dimension (3–16 mm) to correspond to the punch diameter/featured interface defined by the die cavity geometry.
- Tolerance & fit: Use standard punch-to-die and holder fit tolerances defined by your toolmaker practice. If your system uses guided alignment (bushings/guide posts), keep dimensional consistency between punches in the same station to avoid side loading.
L and P are fixed/configured dimensions within their stated ranges; order the specific combination required for the cavity/core dimensions of the die set.
Frequently Asked Questions
What are the available length and P-dimension options for this metric straight regular punch series?+
This series is specified with a fixed L (Length) range of 50–100 mm and a fixed P dimension range of 3–16 mm. Select the exact L that fits your die block/stripper stack-up and the exact P that matches the punch working interface defined by the die cavity.
How does the XNP coating affect punch wear in progressive or transfer tooling?+
The XNP surface treatment is intended to improve wear resistance and help reduce surface degradation during repeated punching. In progressive or transfer die stations, this can extend service intervals compared with tooling finishes that offer less abrasion resistance.
Can I use these straight punches in metric die sets requiring consistent alignment?+
Yes. The product is designed as a metric straight regular punch, and the straight punch geometry supports stable, repeatable punching performance in metric tool setups. Choose the L length within 50–100 mm to maintain correct engagement and minimize side loading.
Do I need additional information like steel grade and HRC to finalize tool life calculations?+
For a complete tool life and mechanical performance assessment, steel grade and hardness (HRC) are typically required. The provided data confirms the XNP coating and the L/P ranges, but it does not specify base steel grade or heat-treatment state.
What should I check to avoid bottoming or misalignment when selecting L length?+
When selecting L from 50–100 mm, verify your die block height, stripper/tool holder retention, and required penetration depth so the punch does not bottom out. Also ensure station-to-station consistency in the selected P dimension (3–16 mm) to reduce differential loading and alignment variation.
Related Products
Need Custom Specifications?
Our engineering team can help with custom configurations, material selection, and volume pricing.