Home / Knowledge / REGO-FIX powRgrip vs HAIMER Shrink Fit
REGO-FIX powRgrip vs HAIMER Shrink Fit
powRgrip and HAIMER shrink-fit holders are high-accuracy systems with very different loading methods. powRgrip presses a shallow-taper collet into a matching holder without heat. Shrink fit thermally expands a precision holder bore so an exact-size tool shank can be inserted and locked as the holder cools.
Side-by-side comparison
| Category | REGO-FIX powRgrip | HAIMER Shrink Fit |
|---|---|---|
| Clamping method | Hydraulic press loads a proprietary collet into a matching holder; no heat is applied to the tool or holder. | Induction heating expands the holder bore, followed by cooling around an exact-size carbide or HSS shank. |
| Diameter flexibility | Interchangeable collets cover many shank diameters, including selected Weldon-flat tools, within the system range. | Each holder bore is normally dedicated to one nominal shank diameter. |
| Changeover | Tool changes are under 10 seconds and the assembly can be handled immediately. | Requires a heating and cooling cycle; automated and contact-cooling equipment can reduce changeover time. |
| Profile and rigidity | Collet-and-holder assembly provides damping and high clamping torque with a somewhat larger nose than the slimmest shrink holders. | Very slim, symmetric holder profiles and direct bore contact suit high-speed work and tight interference zones. |
| Pullout control | High clamping torque; system performance depends on genuine matched holders and collets. | Safe-Lock adds positive pullout protection for compatible grooved cutters in high-performance roughing. |
Best fit by application
REGO-FIX powRgrip
- Use powRgrip when rapid cold changes, diameter flexibility, damping and broad operation coverage justify the press and proprietary collet inventory.
- It is useful where operators need tools ready immediately after loading.
HAIMER Shrink Fit
- Use HAIMER shrink fit when the slimmest profile, simple symmetric assembly or Safe-Lock pullout protection is the stronger requirement.
- It fits shops already equipped with controlled heating, cooling and holder-cleaning processes.
Selection notes
powRgrip favors fast cold changeover and collet flexibility. Shrink fit favors a slim direct-clamp geometry and optional positive pullout protection. The equipment and inventory model are as important as holder price.
Variables to validate
- Both require dedicated loading equipment and disciplined cleaning; neither should be mixed with unauthorized components.
- Compare runout at the same gauge length, plus balance, projection, clamping torque and pullout risk.
Official product references
We work to keep this information reliable, but specifications and availability can change. Verify critical details with the manufacturer through the official resources above.