Precise round guidance with adjustable play. Good value for money and ready-to-use. Sliding friction in combination with a minimal guiding tolerance is possible. Adjustable during assembly. Connecting parts are easy to produce. High attenuation. Simple and easy assembly and disassembly.

  • Examples

    Example 1: Round guide

    Due to the long guidance basis of the guide bushings on a welded machine column, particular 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 occasional 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 rectangular face contact at the guide bushing. The required feed path can be specified when the flange cover has not yet been tightened by turning the threaded ring. The guide bushing is then pre-stressed by tightening the screws at the flange cover.

    Example 4: Sleeve guidance and clamping

    In this example, the working sleeve of a machine tool is precisely guided by two FAK series guide bushings. In the stationary working position of the sleeve or column, clamping using the spring-hardened guide bushing guarantees absolute freedom from play as well as a high degree of radial rigidity in the guide system.

    Example 5: Safety clamping

    Safety requirements (power failures, oil pressure drop) or economic considerations (long clamping and short release times) often call for a mechanically acting clamp. In this case, the FAL series guide bushing is clamped using banks of cup springs (lower half of the picture) and hydraulically released (upper half of the picture).

    Example 6: Guide play compensation

    In the arrangement shown here, an independent guide play setting is possible for each guide bushing. This allows the ever-present minimal influence of the different actual guide bushing dimensions and housing boreholes to be compensated. Where expedient for certain requirements, differing degrees of guide play can be set at the two guide bushings.

  • Benefits

    Competitiveness through technological leadership – a strategy that calls for an economical increase in power density, efficiency and accuracy. Guide bushings create the foundation for this.

    • Low-cost, ready-to-mount guide and clamping bushing.
    • Existing mating play ensures simple mounting 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 characteristics for slideways.
    • Precise central play restriction and clamping of the sleeve or column.
  • Function

    1. Functional Principle FDK/FDL, FSK/FSL

    The principle is illustrated in a simplified diagram with enlarged thread flank play.

    Connection with assembly play between the housing, guide bushing and centre sleeve.

    First phase of axial pre-stress: Mating play between housing and guide bushing eliminated, firm fit realized.

    After further axial pre-stressing, the guide play between the guide bushing and sleeve is optimally adjusted.

    2. Functional Principle FAK/FAL

    The principle is illustrated in a simplified diagram with enlarged thread flank play.

    Mounting situation: Connection with assembly play between the housing, guide bushing and centre sleeve.

    Guide play adjusted: The guide bushing fits firmly in the housing; guide play between guide bushing and sleeve is optimally adjusted.

    Sleeve clamped: Absolute freedom from play between the sleeve and housing due to tensioned guide bushing.

    Sleeve released for free movement: The guide bushing has released the sleeve with the previously set degree of guide play.

  • Transmittable Forces

    Series FAK/FAL only

    In conjunction with the lubrication, the plastic coating of the guide bushings ensures smoothrunning, low-wear guidance. However, the good sliding properties of the bushing have a detrimental effect on the transmittable forces. Therefore the table values "transmittable forces" should only be regarded as non-binding guideline values.

    F: Maximum permissible clamping force.

    C: Required functional installation space
    Spieth clamping sleeves must be clamped using the controlled application of force. The clamping force cannot be applied in relation to the clamping path. To prevent premature blocking, a "free" functional path "C" must be provided.

    M: Transmittable torque at Fa = 0.

    Fa: Transmittable axial force at M = 0.

    The Fa values are calculated according to

    M and Fa: If both torque and axial forces act on a guide bushing at the same time, check using the following formula whether the resulting torque Mr is transmittable:

    M and Fa: If both torque and axial forces act on a guide bushing at the same time, check using the following formula whether the resulting torque Mr is transmittable:

    If it is not possible to apply the clamping force F, the following formula is used for the approximate determination of the torque Mred which can be transmitted with the given clamping force Fgiv. (<F).

    To ascertain the necessary clamping force for a transmittable torque Mred < M, an approximation is possible using the following formula:

     

    M = Transmittable torque (catalogue value) [Nm]

    Me = Required torque [Nm]

    Mr = Resulting torque [Nm]

    Mred = Reduced transmittable torque [Nm]

    F = Max. perm. clamping force (catalogue value) [N]

    Fae = Required axial force [N]

    Freq. = Required clamping force [N]

    Fgiv. = Given clamping force (<F) [N]

    d1 = Shaft diameter [mm]

Order No. Name
CAD-Download
Diameter in mm Perm. radial stress(Guideline values)
d1 d2 K/L d3 l1 l2 l3 l4 d4 Fr
H61) h5 H7 max. N
20 37 30 3 2.5 15 15 16 6 1800
20 37 46 3 3 15 15 16 6 3600
25 42 30 3 2.5 15 15 16 6 2260
25 42 46 3 3 15 15 16 6 4500
30 47 30 3 2.5 15 15 16 6 2810
30 47 46 3 3 15 15 16 6 5720
35 55 42 4 3.5 21 20 22 10 5290
35 55 62 4 4 21 20 22 10 9070
40 62 42 4 3.5 21 20 22 10 6050
40 62 62 4 4 21 20 22 10 10370
45 68 42 4 3.5 21 20 22 10 6800
45 68 62 4 4 21 20 22 10 11660
50 72 42 4 3.5 21 20 22 10 7560
50 72 62 4 4 21 20 22 10 12960
55 80 42 4 3.5 21 21.5 25 12 8320
55 80 68 4 4 21 22 25 12 16630
60 85 42 4 3.5 21 21.5 25 12 9070
60 85 68 4 4 21 22 25 12 18140
65 90 42 4 3.5 21 21.5 25 12 9830
65 90 68 4 4 21 22 25 12 19660
70 100 48 4 3.5 24 24 30 14 12100
70 100 78 4 4 24 24 30 14 25200
75 105 48 4 3.5 24 24 30 14 12960
75 105 78 4 4 24 24 30 14 27000
80 110 48 4 3.5 24 24 30 14 13820
80 110 78 4 4 24 24 30 14 28800
85 120 60 5 4.5 30 28.5 35 16 20810
85 120 92 5 5 30 29 35 16 36110
90 125 60 5 4.5 30 28.5 35 16 22030
90 125 92 5 5 30 29 35 16 38230
95 130 60 5 4.5 30 28.5 35 16 23260
95 130 92 5 5 30 29 35 16 40360
100 140 66 5 5.5 33 31.5 39 16 25920
100 140 102 5 6 33 32 39 16 47520
110 150 66 5 5.5 33 31.5 39 16 28510
110 150 102 5 6 33 32 39 16 52270
120 165 72 6 6 36 36 42 16 34560
120 165 114 6 6 36 36 42 16 58750
130 180 78 6 6 39 39 46 16 41180
130 180 124 6 6 39 39 46 16 71140
140 190 78 6 6 39 39 46 16 44350
140 190 124 6 6 39 39 46 16 80640
150 200 78 6 6 39 39 46 16 47520
150 200 124 6 6 39 39 46 16 86400

Designation of a guide bushing with integrate clamping screws, d1 = 60 mm, d2 = 85 mm and K = 42 mm: Guide bushing FSK 60.85.

1) 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.

We are here to help you | Our team is looking forward to your task. Contact us. We make the right solution for your requirements a reality.

Phone +49 (0) 711 / 930730-0
Fax +49 (0)711- 930 730-7
info[at]spieth-me.de

Product finder | Find the right product for your application quick and reliable.

Products

Products | Just right for your requirements: Spieth machine elements. Innovative connection technology for more productivity by means of precision ...

Applications

Applications | Spieth solutions deliver sure performance worldwide in many sectors ...

Advantages

Advantages | Achieve more, do more, be more successful with Spieth ...

The principle

The principle| All-round traction: efficient, high precision, safe. A connection that gets things moving ...

Development partner

Development partner| Customized engineering Precision solutions to help you move forward ...

Product finder

Product finder | Find the right product for your application quick and reliable ...