TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:14mm L:25-90mm

Select the load grade based on the spring force required at your working deflection. TF (Yellow / Extra Light) suits light stripping or ejection tasks with minimal force. TL (Blue / Light) and TM (Red / Medium) cover general-purpose die work. TH (Green / Heavy) and TB (Brown / Extra Heavy) are for high-force stripping, heavy blanking, or applications where the spring must resist significant compressive loads. If you are replacing an existing spring, match the color code on the original spring.

Measure the depth of your spring pocket and determine the required pre-load and working deflection. The free length of the spring should be long enough to provide the desired pre-load when installed, while still leaving adequate travel before reaching the maximum allowable deflection (typically 30–40% of free length for die springs). Available lengths range from 20 mm to 90 mm — see the variant selector above.

These springs are made from alloy spring steel. Like most die springs, they are not inherently stainless and may develop surface oxidation in humid or wet environments. For tooling used in dry or climate-controlled shops, standard alloy steel performs well. If your application involves coolant exposure, consider applying a light oil coating or consult the variant options for finish details.

Yes. These springs are designed to conform to ISO 10243 and JIS B 5012 dimensional standards for die springs with a 14 mm outer diameter. They are intended to be interchangeable with other compliant springs in standard M14 die spring pockets. Always verify the pocket diameter, depth, and pre-load requirements in your specific tooling before installation.

Die springs manufactured to ISO / JIS standards are typically rated for a defined number of cycles at a specified deflection percentage. Operating within the recommended deflection range (generally up to 30% of free length for maximum life) significantly extends service life. Exceeding the rated deflection or using the spring beyond its load grade capacity will reduce cycle life. Refer to the load-deflection data for your selected grade for precise cycle ratings.

Yes. These M14 die compression springs are well-suited for CNC fixture clamping, workholding return mechanisms, and automation jig applications where consistent, repeatable spring force is needed. Select the load grade that matches your required clamping or return force, and ensure the spring pocket is sized for a 14 mm OD spring.

The quantity options (1 pc, 2 pcs, 5 pcs) allow you to order exactly what you need — a single replacement spring, a matched pair for balanced tooling, or a set of five for a full die or fixture build. Pricing scales with quantity, so buying in packs of 5 offers a lower per-piece cost compared to single-piece orders.