Volstro Head Repair

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For Sale Used As Is for $7500.00 as described and shown below:

Volstro Right Angle Milling Head. Included is an Adjustable Right Angle Milling Head, # 15000-1, CAT 40, with the 6" Right Angle Head Attachment, Volstro # 4000. Recommended 2500 RPM, Head ratio is 1:1. Also, there are 3 ETM ER 16 Spring Collets, 1/8", 3/16", and 3/8". There is a bracket, a metal bushing and a wrench that also come with this unit. Instructions included as well. All parts are in very good condition either lightly used or brand new.

Estimate to convert CAT 40 to CAT 45, CAT50, or HSK style, and vise versa is $4000 to $5000.00.

For Sale Used As Is for $7500.00 as described and shown below:

Volstro Variable Angle Milling Head. CAT40 Attachment: High strength, light weight mounting system. Machined from 7075-T651 aluminum alloy. Sealed double-row bearing system. Four full rows of bearing support for the input shaft & angular head. Full 360 deg directional adjustment for all attachments. Multi-angle head: The multi-angle head with straight housing is used to mill chamfers and angles with standard endmills. It also mills internal grooves and keyways. Angle is adjustable for 0-90 deg with 360 deg rotation. A 360 deg dial is mounted on the housing. 2500 RPM Uses ER-16 collets to 3/8" capacity Spline driver & spline shaft Hardened and ground spindle and gears. Comes as shown in pictures.

We can repair your Volsto head to get you back up and running. This includes providing new gears when required. Plus, we offer an upgrade to the original non-sealed bearing design, to a sealed / shielded bearing design at all bearing locations. We keep bearings in stock for these motors to allow us to keep pace with our repair volume. Lead-time can be as short as 2-3 days, when the gears are not damaged.

The motor is:

Disassembled and cleaned.
Inspected dimensionally and visually.
Quoted for repair.
The rotor is assembled with new precision grade sealed / shielded ceramic bearings.
If necessary, the rotor taper is ground to true the taper, and / or the bearing journals are plated and re-ground to proper bearing tolerance and total indicated runout.
As required, the lower, middle and upper bearing housings may be bored, bushed, and reground to proper concentricity and dimensional tolerance.
The rotor is re-assembled and dynamically balanced.
The rotor is installed in the housing.
The unit is run tested for 5-10 hours with testing of vibration, temperature, and noise levels.
The drawbar is tested to ensure proper locking of the tool holder and the unit is shipped.

Four factors are of primary importance when rebuilding a high precision spindle heads.

The condition of the machine before the rebuild along with accurately diagnosing any and all problems.
Installing proper replacement parts including spindle grade bearings and parts with OEM tolerances that are known only to OEM's such as Ekstrom-Carlson. We are not simply a machine shop or an electrical rewind shop.
Precision tolerance machinery and tooling including grinding, plating and balancing equipment.
Experience and quality workmanship of the repair technician.

At Ekstrom-Carlson, a complete factory rebuild includes a thorough inspection and a detailed repair quotation based on the supply of new parts from stock (when available). Comparison of parts to detailed prints, when required, ensures that no corners are cut. All spindle rotating elements are balanced to ISO G2.5 tolerances or better, the best in the industry. Re-balancing is critical, even on "simple bearing replacement repairs."

New parts to original design specifications will be installed by our Service Technicians for complete unit responsibility.

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