Guide Bushings
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EXACT GUIDANCE Spieth guide bushings - round guiding and clamping elements with adjustable play. Spieth guide bushings open up new dimen- sions for contemporary, efficient and econom- ical machine designs incorporating high pow- er densities and high levels of dynamic stress. That's because the simple to produce sur- rounding components can be manufactured to standard ISO tolerance levels. The required fine guidance play can be optimally adjusted during the mounting process. Minor geometri- cal errors in the surrounding components as well as operational influences such as increas- ing temperature can be taken into account - and play can easily be re-adjusted later on.

SPIETH GUIDE BUSHINGS • Low-cost, ready-to-mount guide and clamping bushing. • Existing mating play ensures simple mount- ing even with large dimensions. • Optimum guide play adjustment for any operating status. • Metallic support between clamped sleeve and housing affords high radial rigidity. • Provides typical high damping performance • Precise central play restriction and clamping

Spieth guide bushings are round linear guid- chanical engineering. The use of guiding bush- es is called for wherever the benefits of slideways, such as high levels of damping com- bined with minimal guide play are required. As a result, guide bushings are successfully used on guide frames, cylindrical carriage guides, on tailstock sleeves, press rams etc. In addition to linear movement, simultaneous rotary movements are possible. However, due to the constraints imposed by lubrication technology, pure rotation such as that used for sliding bearings is not permitted. High ac- celeration...

FUNCTIONAL PRINCIPLE FDK/FDL, FSK/FSL Connection with assembly play between the housing, guide bushing and centre sleeve. First phase of axial pre-stress: Mating play be- tween housing and guide bushing eliminated, Mounting situation: Connection with assem- bly play between the housing, guide bushing Guide play adjusted: The guide bushing fits firmly in the housing; guide play between guide bushing and sleeve is optimally adjust- Sleeve clamped: Absolute freedom from play between the sleeve and housing due to ten- sioned guide bushing. Sleeve released for free movement: The guide bushing...

GUIDE BUSHINGS ASSEMBLY EXAMPLES Example 1: Round guide Due to the long guidance basis of the guide bushings on a welded machine column, par- ticular attention must be paid to ensuring a precisely flush housing borehole. Example 2: Sleeve guide In a tailstock, minimal guide play can be achieved here during the installation process. Guide play readjustment is possible at any time. Grease lubrication with facility for occa- sional re-lubrication is sufficient here. Example 3: Column guide Guide play adjustment using threaded ring. A locating fit at the threaded ring ensures the necessary...

ASSEMBLY EXAMPLES Example 4: Sleeve guidance and clamping In this example, the working sleeve of a ma- chine tool is precisely guided by two FAK se- ries guide bushings. In the stationary working position of the sleeve or column, clamping us- ing the spring-hardened guide bushing guar- antees absolute freedom from play as well as a high degree of radial rigidity in the guide Example 5: Safety clamping Safety requirements (power failures, oil pres- sure drop) or economic considerations (long clamping and short release times) often call for a mechanically acting clamp. In this case, the FAL...

GUIDE BUSHINGS SPIETH GUIDE BUSHINGS: THE RIGHT CHOICE We'll provide you with the perfect guide bush- ings for your application. We'll also help you choosetheright one-wit h expert advice from Series FDK/FDL and FSK/FSL • Precision round guiding elements with adjustable play. • Low-cost, ready-to-mount. • Sliding friction in combination with mini- mum guide play possible. • Adjustable during installation. • Connecting components simple to • High degree of damping. • Simple, quick assembly Series FAK/FAL • Round guiding and clamping elements with precisely adjustable play. • Low-cost,...

SPIETH GUIDE BUSHINGS SERIES FDK/FDL 11 As the guide borehole is machined while the guide bushing is in a preloaded condition, control measurement of the guide bushing is not possible in its delivered, non-loaded state. Perm, radial stress (Guideline values) Designation of a guide bushing

GUIDE BUSHINGS SPIETH GUIDE BUSHINGS SERIES FSK/FSL 11 As the guide borehole is machined while the guide bushing is in a preloaded condition, control measurement of the guide bushing is not possible in its delivered, non-loaded state. Designation of a guide bushing with integrate clamping screws,

SPIETH GUIDE BUSHINGS SERIES FAK Clamping initiation 21 Design specification, not to be confused with actuation travel. For

SPIETH GUIDE BUSHINGS GUIDE BUSHINGS Transmittable Dim. connect, comp. 2) Design specification, not to be confused with actuation travel. For explanations, see p. 71.

Before mounting, all parts belonging to the round guide must be carefully cleaned and wet slightly using lowviscosity machine oil. 1. Insert the guide bushing in the housing borehole. If an orientation pin is fitted, this must not come to rest axially against the 2. Mount the flange cover loosely without the shim ring and insert the sleeve. 3. Tighten the clamping screws in the flange cover evenly crosswise until loss of play in the centre sleeve is indicated by stiffer slid- ing action of the sleeve. Check the parallel- ism of the mounting gap for the shim ring 4. Gauge the mounting gap...

GUIDE BUSHINGS The guide bushing may only be clamped if its borehole and outer surfaces are covered by the connecting components. Otherwise the guide bushing could be destroyed as a result 1. Insert the guide bushing and ring piston into the housing borehole without exerting 2. Mount the flange cover loosely without the shim ring and insert the sleeve. 3. Tighten the clamping screws in the flange cover evenly crosswise until loss of play in the centre sleeve is indicated by stiffer slid- ing action of the sleeve. Check the parallel- ism of the mounting gap for the shim ring 4. Gauge the...