SS - Spline Shaft

SS Spline Shaft
The SS Series Spline shafts are available in 5 sizes from 1/8” to ¾” (3.18 to 19mm) diameter. Bushings are available in either a plain or threaded interface.

  • Anti-rotation spline
  • Maximum twist of 3 degrees / ft
  • Bushing with integral brass insert
  • Standard composite bushing without anti-backlash compensation
  • Specifications +


    Size
    Shaft Diameter
    Max Stroke
    Max Load
    Major Attribute
    Units
    mm m N  
    Spline Shafts
    SS 02 3.18 0.45  2 Spline, general purpose, light to moderate loads, low cost, low friction, and long life.
    SS 04 6.35 0.90  5
    SS 06 9.53 1.2  10
    SS 08 12.7 1.8  15
    SS 12 19.05 3.0  25
  • Dimensional Drawings +


    Maximum Twist: 3°/ft about Spline Shaft axis
    Torsional Clearance (SSA): 3° Bushing to Shaft
    Spline Shaft stiffness may be modeled as a round rod with diameters given.
    0.125-in rail size only available in SSAP and SSAT styles.


    Shaft
    Root
    Diameter
    Bushing
    Diameter
    Bushing
    Length
    Thread
    Thread
    Length
    Rail Diameter Code

    A B C M N
    in ± .002
    (mm ± 0.05)
    in ± .002
    (mm ± 0.05)
    in ± .001
    (mm ± 0.025)
    in ± .01
    (mm ± 0.25)

    in ± .002
    (mm ± 0.05)
     SS 02 0.125
    (3.18)
    0.095
    (2.41)
    0.375
    (9.53)
    0.500
    (12.70)
    3/8-24
    0.250
    (6.35)
    SS 04
    0.250
    (6.35)
    0.202
    (5.13)
    0.500
    (12.70)
    0.75
    (19.1)
    7/16-20 0.250
    (6.35)
    SS 06
    0.375
    (9.53)
    0.306
    (7.77)
    0.625
    (15.88)
    1.00
    (25.4)
    9/16-20 0.375
    (9.53)
    SS 08
    0.500
    (12.70)
    0.419
    (10.64)
    0.813
    (20.65)
    1.50
    (38.1)
    3/4-20 0.500
    (12.70)
    SS 012
    0.750
    (19.05)
    0.630
    (16.00)
    1.125
    (28.58)
    2.25
    (57.2)
    1-16 0.750
    (19.05)
  • Lubrication +


    Kerk Spline Shaft SS assembly consists of a stainless steel spline shaft treated with Haydon Kerk Motion Solutions™ proprietary low friction Kerkote® TFE coating, mated with a Kerkite® composite polymer bushing.

    Kerkote TFE is a soft coating, a long-term dry lubricant that is optimized for softer plastics like acetyls and nylons, with or without mechanical reinforcement. Lubrication to the nut / lead screw interface occurs by the bushing picking up Kerkote TFE particles from the coating as well as from the migration of the internal lubricant within the plastic.
  • Customize +


    Haydon Kerk can custom-design and manufacture unique spline shaft solutions for your equipment requirements. Special rail lengths, multiple carriages, alternate lead screws, and lubrication are just some of the typical adaptations engineered to customer needs. Every Haydon Kerk linear rail product is supported by an experienced technical team recognized for innovation, customization, and dedicated customer service.
  • Part Number Guide +



    EXAMPLE:

    SZAT041K-12-XXXX = Spline shaft with anti-backlash, shaft and threaded bushing assembly, 1/4-in shaft, 1 bushing per rail, Kerkote® coating, 12-in length, with no special features added.

    GRBPO41N-00-XXXX = Guide rail, plain bushing only, 1/4-in shaft, with no special features added.