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PARKER FK GUIDE RING

    FK Guiding Element

    Descriptions

    The Profile FK guide ring is open and therefore lends itself to easy assembly. It is extraordinarily wear-resistant and suitable for piston guiding. The use of this guide ring
    simplifies the design of pistons.

    Features

    • Minimal play due to extremely small
    manufacturing tolerances of the guiding
    elements.
    • Vibration absorption effect.
    • Extreme wear resistance.
    • Improved sliding properties due to surface structure.
    • Easy snap assembly on a single-part
    piston.
    • Significantly higher permissible loading
    pressure compared with other guidance
    tape materials.
    • Dimensions according to DIN 10766.
    • Also available as bulk material.
    • Any desired nominal diameter available
    due to use of machining technique.
    • Installation in closed and undercut
    housings.

    Range of application
    Guiding element for pistons and piston rods in hydraulic cylinders.

    Operating temperature

    FKS525Q5038
    FK Q5029
    -50 °C to +130 °C
    -50 °C to +120 °C
    in HFA, HFB and HFC fluids-30 °C to +80 °C
    in water max.+ 100 °C

    Pressure resistance acc. to DIN 53454

    FKS525Q5038
    FK Q5029
    340 N/mm²
    270 N/mm²

    Water absorption acc. to DIN 53495

    FKS525Q5038
    FK Q5029
    < 0.1 %
    1 % to 2 %
    Sliding speed≤ 0.5 m/s

    Recommendation for determing the safety factor ν: ν > 3
    Compounds
    Duroplastic synthetic resins with fabric reinforcement.
    Q5029: phenole resin-cotton laminate.
    Q5038: phenole resin-acrylic fabric laminate.
    Installation
    For surface requirements, see chapter „General Installation Guidelines“.
    For nonferrous and light metal pistons, please use our F3 guidance tape profile (PTFE
    with carbon filler).
    The installed rings must have a gap „k“ between their diagonally cut ends:
    k = 0.008 x d + 2
    The calculated values for „k“ are rounded up to the nearest millimetre or half-millimetre.
    The calculation of the permissible radial force is based on the projected area D × L.
    Example: permissible radial force F
    R for a cylinder diameter of D = 80 mm, length L =
    15 mm, compound Q5038T and safety factor 4:

    Calculation of elongated length
    “U“ (piston) = π × (D – S) – k

    DdLD1
    25205.624.8
    25209.724.8
    28236.327.8
    32275.631.8
    32279.731.8
    35305.634.8
    35309.734.8
    36315.635.8
    40355.639.7
    40359.739.7
    42375.641.7
    45405.644.6
    45409.744.6
    50455.649.6
    50459.749.6
    55505.654.6
    55509.754.6
    60555.659.6
    60559.759.6
    63585.662.6
    63586.362.6
    63589.762.6
    65605.664.5
    65606.364.5
    65609.764.5
    70655.669.5
    70656.369.5
    70659.769.5
    70651569.5
    75705.674.5
    75709.774.5
    75701574.5
    80756.379.5
    80759.779.5
    80751579.5
    80752579.5
    85806.384.5
    85809.784.5
    85801584.5
    90855.689.5
    90859.789.5
    90851589.5
    90852589.5
    95905.694.5
    95909.794.5
    95901594.5
    100955.699.4
    100959.799.4
    100951599.4
    1051009.7104.4
    10510015104.4
    1101059.7109.4
    11010515109.4
    1151109.7114.4
    11511015114.4
    1201159.7119.4
    12011515119.4
    1251209.7124.4
    12512015124.4
    1301259.7129.4
    13012515129.4
    1401359.7139.4
    14013515139.4
    1451409.7144.3
    14514015144.3
    1501459.7149.3
    15014515149.3
    1551509.7154.3
    15515015154.3
    15515025154.3
    1601559.7159.3
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    1651609.7164.3
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    1701659.7169.3
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    1751709.7174.3
    17517015174.3
    17517025174.3
    1801759.7179.3
    18017515179.3
    18017525179.3
    1901859.7189.3
    19018515189.3
    19018525189.3
    2001959.7199.3
    20019515199.3
    20019525199.3
    20520015204.3
    20520025204.3
    21020515209.3
    21020525209.3
    21521015214.3
    21521025214.3
    22021515219.3
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    22522015224.3
    22522025224.3
    23022515229.3
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    24023515239.3
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    25024515249.3
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    25525015254.3
    25525025254.3
    26025515259.3
    26025525259.3
    26526015264.3
    26526025264.3
    27026515269.3
    27026525269.3
    27527015274.3
    27527025274.3
    28027515279.2
    28027525279.2
    28528015284.2
    28528025284.2
    29028515289.2
    29028525289.2
    30029515299.2
    30029525299.2
    31030515309
    31030525309
    32031515319
    32031525319
    33032515329
    33032525329
    35034515349
    35034525349
    38037515379
    38037525379
    40039515399
    40039525399
    45044525449
    45044525449
    50049515499
    50049525499