CRN Coating Ball Lock Regular Punches - Heavy Duty, Inch

Used in punch-and-die assemblies, these heavy-duty ball lock regular punches provide secure retention for repeatable blanking and punching operations. The ball-lock regular geometry supports stable positioning in the holder, helping prevent micro-movement that can affect press-fit consistency over long production runs.

• Automotive and industrial stamping: Typical for high-cycle blanking where consistent point-to-part contact and predictable engagement are critical. The CRN coating increases surface durability to maintain performance under demanding loads.
• Inch tooling for forming/secondary operations: Suitable when robust punch retention and reliable ejection behavior are needed. The available shank diameter range allows matching to common holder and bushing sizes.
• Mixed-part production lots: Works well when tool wear must be managed to sustain stable press-fit fit-up across cycles.

This variant is suited for production-oriented tooling because it pairs the ball-lock retention function with a wear-focused CRN coating and controlled tip/point dimensions.

This punch series is offered in M2 and PS4 materials, each chosen to balance wear resistance and toughness for punching applications. M2 is a high-speed steel commonly selected where durable cutting/punching performance is required under repeated cycles, while PS4 is an alternative steel option for tooling that needs a different property balance for forming and blanking.

• CRN coating: Adds a hard, wear-resistant surface layer to improve durability during repeated punch cycles.
• Hardness & wear trade-off: Higher wear resistance generally helps maintain dimensional stability at the tip, while overall toughness is controlled by the selected steel grade and heat treatment response.

Heat treatment state is not specified in the provided data; however, for punch tooling, these steels are typically supplied in a hardened condition suitable for machining and subsequent coating performance. Select the grade based on desired balance between wear resistance and toughness for your target load and cycle count.

Correct sizing is essential to ensure stable ball-lock retention and predictable press-fit engagement. Use the provided ranges to match the punch shank and point geometry to your holder/core requirements before final fit-up.

• Shank diameter (D, in): choose within 37 ~ 125 in according to the mating holder bore and ball-lock retention design.
• Point/length code (L): select the coded inch length from 250 ~ 600, 250 ~ 700, 275 ~ 700, or 300 ~ 700 (as available for your chosen tip shape).
• Tip shape: pick from H, J, K, L, N, O, R, V, X, Y, Z to match the intended contact profile and cutting edge/point requirements.

Coordinate the length-related dimensions (B, C, and D point length codes) with the holder stack-up to avoid interference and ensure full engagement. The data provides dimensional ranges for P (0.05 ~ 1), W (0.05 ~ 0.5), and R (0.007 ~ 0.007), so confirm your drawing tolerances and press-fit targets against your ball-lock system before production.