Construction

ETP-CLASSIC R is the Stainless Steel version of ETP-CLASSIC. It is a hydraulic connection which consists of a double-walled hardened steel sleeve, filled with a specially developed pressure medium, sealing ring, piston, pressure flange and cap head clamping screws. ETP-CLASSIC type R is made of stainless steel and has hex head stainless steel clamping screws. This in order to facilitate easy cleaning, making it ideal for food processing applications.

Operation

When tightening the screws, the sleeve expands uniformly against hub and shaft and creates a rigid joint. When loosening the screws, the sleeve returns to its original measurements and can then easily be dismantled. The ETP-CLASSIC type R has a few more clamping screws, as the tightening torque is lower for stainless steel screws.

Where we win

  • Compact design.
  • Fast Mounting and dismantling.
  • Fine adjustment of the hub can be made during mounting.
  • Low tightening torque and a small number of screws makes the mounting easy.
  • Good concentricity, even after several mountings.
  • Hex head screws are available as accessories.

 
ETP Classic - TIghtening
When the screws have been tightened, ETP-CLASSIC R creates an even surface pressure against the hub and shaft along virtually the entire length.

Technical Specification ETP-CLASSIC® RNotation: ETP-CLASSIC R-XX

ETP-CLASSIC®DimensionsTransmittableScrews**
DIN 933, A4
Polar moment
of inertia
J
kgm2 • 10-3
Weight
kg
torqueaxial forceradial force
d
mm
D
mm
D1
mm
D2
mm
L
mm
L1*
mm
L2*
mm
T
Nm
FA
kN
FR
kN
Ant.Dim.Tt
Nm
R-15 15233828,5 173034456,0 2,54M5 4,5 0,019 0,10 
R-20 2028453522374110010,0 6,65M54,50,044 0,16 
R-25 2534494027434721016,8 10,67M54,50,070 0,21 
R-30 30415747,532475135023,3 14,77M54,50,137 0,30 
R-35 35476353,537555950028,5 18,89M54,50,234 0,41 
R-40 40537060,543636775037,5 22,89M54,50,414 0,58 
R-45 45597766,5496973110048,8 26,99M6 7,80,647 0,74 
R-50 50658372,5537680155062,0 30,99M6 7,80,957 0,92 
T= Transmittable torque when axial force is 0.}   When the screw is tightened to Tt.Tt= Recommended tightening torque for the screws.
* The dimensions are valid before mounting.
Dimensions subject to alterations without notice.
FA=Transmittable axial force when torque is 0.
FR=Max transmittable radial force at continuous operation.
Max allowed bending torque: 15% of transmittable torque T.

TOLERANCES

Shaft h8 (size R-15 only h7)
Hub H7.

Material

Euronorm 1.4568, stainless steel, X7CrNiAl17-7.
** Screws: coated for a low and even friction in the threads.

Mounting advice

Make sure the screw thread is well lubricated before each mounting. We recommend the use of Omega 58.


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