Frequently Asked Questions

Hammerhead Power Hammer Dies are the finest available. Here are some common questions and answers about Power Hammer Dies and Hammerhead Power Hammer Dies.

How long does it take to change the dies?
It usually takes about 15-30 seconds to swap dies. It is important to keep the narrow end of the wedge key dressed so that it doesn’t get stuck when backing it out. 
 
A few of my dies won’t stay tight. How can I keep them from coming loose?
Inserting a 1 x 4” shim cut from an aluminum can , or an equivalent piece of copper, between the die and the wedge key will lock them together. The soft metal deforms enough to take up any slack in the fit.
 
Can I change the orientation of the dies?
Yes. The front piston can be rotated every 20º by removing the 8 socket head cap screws on the bottom of the gland, re-indexing and reinstalling the screws.

The lower die holder, or sow block, can be moved to any orientation. It is held onto the top of the anvil by a large plug taper. There are 2 M19 tapped holes in the bottom of the dovetail way. By driving 2 bolts into the holes, one can pop the sow block loose, shim it and rotate the block to the desired position.

It is suggested that prior to doing this operation that striking some witness marks on the lower edge of the block and the top of the anvil will assist in returning the block to the original position.
 
Can I use oversized dies?
Certainly. The Hammerhead line of dies features many oversized dies for the SM50 and SM60 (SM60 is no longer available).
Unlike many hammers, the Sahinler’s ram (front piston) does not travel upwards past the edge of the dovetail way. Thus, dies may overhang the circle of the piston.
 
Won’t the moment arm created by this overhang put side stress on the piston?
Technically, yes. But it’s a very short M.A. and the circular piston distributes the force much better than the sliding dovetail ram of a traditional mechanical hammer.

When using the large double combination (LDC) or Large Triple Combination (LTC) for very heavy drawing out work it is suggested to simply shift the radius portion of the die so that it is more completely under the piston circle.