ETP-CLASSIC is available as standard for shafts 15-100 mm, with imperial sizes and a short overall length version (type S) also available . Also available in stainless steel (type R). Typical runout is : 0,03 – 0,06 mm. Number of mountings: 100 (type R: 50). The small number of clamping screws with low tightening torque, makes the mounting/dismantling procedure fast and easy.

Construction

ETP-CLASSIC 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, essential within 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 easily be dismantled. ETP-CLASSIC type R has a few more clamping screws, as the tightening torque is lower for stainless steel screws.

Benefits and features

  • Small built-in dimensions.
  • Mounting and dismantling is fast.
  • 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, also after several mountings.
  • Hex head screws available as accessories.

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

ETP Classic DiagramETP Classic Specification Icons
ETP Classic

Technical Specification ETP-CLASSIC® Notation: ETP-CLASSIC XXX

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
1515233828,5173035557,32,53M560,0190,10
191928453521374210010,65,83M580,0450,17
202028453522374212512,56,63M580,0430,16
222232494022374213512,38,24M580,0630,20
242434494025404520016,79,84M580,0660,20
252534494027434825020,010,64M580,0670,20
282839554629455030021,413,14M580,1120,27
3030415747,532475242028,014,74M580,1330,30
3232436050,534525742026,316,34M580,1800,35
3535476353,537556065037,118,86M580,2300,41
383850655641596475039,521,26M580,2770,44
4040537060,543636894047,022,86M580,4080,57
4242557060,545657094044,824,46M580,4140,56
4545597766,5496975129057,326,96M6130,6360,73
4848628069,5527379157065,429,36M6130,7610,80
5050658372,5537682190076,030,96M6130,9430,91
5555718878588288250090,935,08M6131,3011,09
6060779584,5649096340011339,18M6131,9591,40
656584102916896102350010843,18M6132,7801,72
707090113997299107520014947,26M8324,0352,09
75759511810485114122630016851,36M8325,5002,51
808010012310990120128880022055,06M8328,1002,68
858510612911595125133880020758,06M8329,5003,09
90901121351211001331411100024460,08M83212,2003,52
95951201431291051391471280026961,58M83217,1004,46
1001001251481341101451531550031062,08M83219,9504,87
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 – k6 (size 15 only h7)
When using k6 shaft – transmittable torque will increase by 20%.
Can also be used with h9 shaft – Transmittable torque will be
reduced by 25%.
Hub H7.

Type of torque

Transmittable torque, T, is for static load.
If the load is alternating or pulsating torque, reduce
the transmittable torque, T, with the following factors:
(factor x T).

Alternating:
0,6 x T for sizes 15 – 30 mm.
0,5 x T for sizes 32 – 100 mm.
Pulsating:
0,7 x T for sizes 15 – 30 mm.
0,6 x T for sizes 32 – 100 mm.

Tightening torque

By increasing the tightening torque of the screw sizes
according to the table, the transmittable torque can
be increased by 25%.
Note: Only to be used when operating temperature
≤ mounting temperature.

Max. tightening torque (screw quality 12.9)

M5M6M8
10 Nm17 NM40 Nm

Technical specification ETP-CLASSIC® in inch Notation ETP-CLASSIC in inch-XX

ETP-CLASSIC®DimensionsTransmittableScrews**
DIN 912, 12.9
torqueaxial force
d
mm
D
mm
D1
mm
L
mm
L1*
mm
L2*
mm
T
Nm
FA
kN
No.Dim.Tt
Nm
3/4 "3/4 "2845213540889,33M58
7/8 "7/8 "324922374213512,14M58
15/16 "15/16 "344925394417514,74M58
1 "1"355127414619516,24M58
1 1/8 "1 1/8 "395529434828019,54M58
1 3/16 "1 3/16 "415732475234022,54M58
1 1/4 "1 1/4 "436034505541026,14M613
1 3/8 "1 3/8 "476337535854031,16M58
1 7/16 "1 7/16 "506537545958031,86M58
1 1/2 "1 1/2 "526841576270036,76M58
1 5/8 "1 5/8 "557044636885041,26M58
1 3/4 "1 3/4 "5977496773118053,06M613
1 15/16 "1 15/16 "6583527480145058,96M613
2 "2 "6888537480162064,36M613
2 7/16 "2 7/16 "8199608591280090,58M613
2 1/2 "2 1/2 "84107628694310097,66M832
2 15/16 "2 15/16 "95118851081165300153,06M832
3 "3 "98121741011095300139,16M832
4 "4 "1301559712813612500264,08M832
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.
Max allowed bending torque: 15% of transmittable torque T.

ETP-CLASSIC is also available in a large assortment of inch sizes. The main dimensions are given in the table, for more information please refer to technical data for ETP-CLASSIC.

TOLERANCES

ETP-CLASSICShaft tolerance
3/4"0 to –0,0015"
7/8" π 1 1/2"0 to –0,0020"
1 5/8" π 2 15/16"0 to –0,0030"
3"0 to –0,0040"
4"0 to –0,0030"
ETP-CLASSICHub tolerance
3/4" -1 15/16"0 to +0,0010"
2" π 2 7/16"0 to +0,0012"
2 1/2" π 4"0 to +0,0014"

Technical specification ETP-CLASSIC® type S Notation ETP-CLASSIC S-XX

ETP-CLASSIC®DimensionsTransmittableScrews**
DIN 912, 12.9
Weight
kg
torqueaxial force
d
mm
D
mm
D1
mm
L
mm
L1*
mm
L2*
mm
T
Nm
FA
kN
No.Dim.Tt
Nm
S-191928451326315353M580,15
S-2020284515283375 663M580,14
S-25253449152934120 10104M580,17
S-30304157203439210 14144M580,24
S-35354763223843330 19196M580,32
S-40405370254247500 26266M580,46
S-45455977284551700 31316M6130,57
S-505065832645511000 40406M6130,72
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.
Max allowed bending torque: 15% of transmittable torque T.

ETP-CLASSIC is also available in a shorter version, type S, which is especially suitable for small hubs.The main dimensions are given in the table, for more information please refer to technical data for ETP-CLASSIC.

TOLERANCES

Shaft: h9 (for size 19: k6-h8).
Hub: H7.



ETP Classic R Specification Icons ETP Classic R

Technical Specification ETP-CLASSIC® R Notation 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-1515233828,5173034456,02,5 4M54,50,0190,10
R-202028453522374110010,06,6 5M54,50,0440,16
R-252534494027434721016,810,6 7M54,50,0700,21
R-3030415747,532475135023,314,7 7M54,50,1370,30
R-3535476353,537555950028,518,8 9M54,50,2340,41
R-4040537060,543636775037,522,8 9M54,50,4140,58
R-4545597766,5496973110048,826,9 9M67,80,6470,74
R-5050658372,5537680155062,030,9 9M67,80,9570,92
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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