The Black Label Series


Black Boy One & Black Boy Two

Protecting your spindle from damage

Fine chips can occur while machining such materials as cast iron, brass, aluminium or plastic. Over time they develop an abrasive effect which reaches the rotary joint and the pumping system via the cooling lubricant. This ends up clogging the coolant channels and narrows the pipe line cross sections. This causes the sealing surface of the rotary joint to fail and block the leakage drain holes. In short, damage will occur leading to unnecessary costs.

We have two solutions to help avoid this and when used in conjunction they can substantially increase the working life of your spindle. The Black Boy One and Black Boy Two and the Power Filter.

The Black Boys

The Black Boy One & Two is our alternative to the bearing-free Blue Pop Off units. The new Black Boy One replaces the traditional blue rotary unions, (models 1129-584) and lasts at least double their comparable working life. We have created a much more powerful alternative to the blue seal kits.


  • Bearing free connection for machine tools
  • Special seal allows dry operation
  • High heat resistance
  • Minimum heat and vibration generation
  • Low wear due to the honeycomb structure
  • Structure made of anodised aluminum
  • Spring and rotor made of stainless steel
  • Increases the working life of the spindle

The result:

A longer service life for your spindle!

Black Boy One: The unique design of the Black Boy One’s ceramic sealing surface offers significant benefits compared to that of other manufacturers. The honeycomb structure on the standing slip ring causes swirls of air to form an air cushion. These air cushions enable dry running up to a maximum speed and also allows dry air to be charged under rotation.

For more information please download our data sheet

The Black Boy Two is a universal rotary drive that is completely compatible with rotary products of other manufacturers.

The Black Boy Two can be easily used under difficult coolant conditions up to 32,000 rpm with cooling lubricant, cutting oil, MMS or without any medium. When charging with dry air, it can be run up to 5 bar and 10,000 rpm

For more information please download our data sheet

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We offer special solutions and repair processes for Deckel Maho, Franz Kessler, Cytec, Step-Tec, Serrtech, DMG Mori and GMN. However, we also service and repair spindles from all other manufacturers.  Spindel Doctor’s motto: “We repair anything that rotates!”

We repair spindles made by:  Alfing Kessler, Berthold Hermle AG, Correanayak, Cytec, Deckel Maho, Diebold DZ W 15, DMG Mori, EUMACH, Ex-Cell-O, Fanuc, Fischer AG, Fischer Precise, Fischer Precision Spindle, FPS, Franz Kessler, Gamfior, GMN, GWF, HEDELIUS, Heller Maschinenfabrik, Hitachi, Hitachi Seiki, Homag, Hurco, IBAG, IMT, Jager, Kellenberger, KITAMURA MACHINERY, Komo, Lamb, Leblond Makino, LoadPoint Bearings, LOH, Mag-IAS, Makino, Manurhin, Marubeni Citizen – Cincom, Master Machine, Matsuura Machinery GmbH, Mechatronic, MIKRON AG, Mitsubishi, Monarch, Nordson, Okamoto, Omlat, Oxx, Parker Majestic, Parpas, Peron Speed, Pluritec, Pope, Posalux, Precise, Reckerth, Red Head, Renaud, Royal Precision Tools, Serrtech, Scharmann, Schmoll, Schneeberger, Setco, Siemens, SIP, SKF, Somex, Step-Tec, TDM, Tongtai Seiki, Toyo, TSK Accretech, VEM S.p.a (ElectroSpindles), Wasino, Weiss, Westwind, Whitnon, WMW, YCM, ZPS, and many more.