ETP-HYLOC is available as standard for shafts 50 - 220 mm. Run out ≤ 0,02 mm. Number of mountings: Max. 2000. Customised models for shaft > 220 mm can also be offered on request. For extreme high torque applications the contact surfaces of ETP-HYLOC (sizes ≥100 mm) can be plated with ETP-HFC, High Friction Coating, which doubles the torque capacity.

ETP-HYLOC is a hydro-mechanical joint, which consists of a double-walled steel sleeve which encloses a conical moveable piston. Mounting and dismantling is carried out with a hydraulic pump. In the flange there are three threaded connections ("ON", "P" and "OFF") in the radial direction and the same in the axial. This makes it possible to choose radial or axial connection of the pump hoses, depending on the build-in situation.

Operation

When the piston is moved, by the hydraulic pressure from the pump, the double-walled sleeve expands uniformly against shaft and hub to form a rigid joint. When dismantling, the piston is moved in the opposite direction and the joint will loosen. A small amount of oil will be taken via spiral tracks in the piston between the surfaces (pressure applied through the "P" connection), in this way making it easier for the piston to move. Normal working pressure is 1 000 bar.

Benefits and features

  • High transmittable torque capacity - can be varied by changing the mounting pressure.
  • Fast mounting/dismantling in tight spaces.
  • High radial load capacity.
  • Radial and axial connection is possible.
  • Fine adjustments of the hub can be made when mounting.
  • Good concentricity, also after several mountings.
  • With ETP-HFC coating - double torque capacity.

ETP Hyloc - Mounting
Mounting: apply pressure in the "ON" and "P" (not shown) connections.When mounted no hydraulic pressure remains. The small conical angle prevents the piston from releasing.

ETP Hyloc - Dismantling
Dismantling: apply pressure in the "OFF" and "P" (not shown) connections. ETP-HYLOC returns to its original measurements and the joint is loose.

ETP Hyloc DiagramETP Hyloc Specification Icons
ETP Hyloc

Technical specification ETP-HYLOC® Notation ETP-HYLOC XXX

ETP-HYLOC®DimensionsTransmittable torque or axial force at 1000 barHPolar moment
of inertia
J
kgm2 • 10-3
Weight
kg
Shaft h7Shaft h8Min hub DH mm
d
mm
D
mm
D1
mm
L
mm
L1
mm
T
kNm
FA
kN
T
kNm
FA
kN
Yieldpoint N/mm2
>300>400
50507710156822,6702,470110105M83,22,4
60608911364904,61304,3130140125M85,43,1
7070102122741007,92107,4200170145M88,74,1
80801151358411012,129011,5280200160M8145,4
90901281489412017,138016,2360235180M12237,0
10010014016010413024,248523,1460270200M12348,6
11011015417311414032,959531,5570295220M125111
12012016818612415043,272041,6690320240M127614
13013018220013416053,882551,4790350260M1611017
14014019621314417068,998566,2945375280M1615021
15015021022715418085,4113582,31095400300M1621025
16016022424016419010413051001260425320M1629030
18018025226718421015016751461625480360M1650042
20020028029320423020620602002000535400M1683056
22022030832022425027324852662415585435M16130073
T = Transmittable torque when axial force is 0.H: Threads for easy handling.
Dimension subject to alterations without notice.
FA = Transmittable axial force when torque is 0.
DH = Outer diameter for hub material in steel.
ETP-HYLOC®600 bar800 bar1200 bar
ShaftMin hub DH mmShaftMin hub DH mmShaftMin hub DH mm
h7h8h7h8h7h8
T
kNm
T
kNm
Yieldpoint N/mm2T
kNm
T
kNm
Yieldpoint N/mm2T
kNm
T
kNm
Yieldpoint N/mm2
>200>300>400>300>400>400
500,80,89090901,61,495903,33,1130
601,11,1115105953,331201105,95,6155
702,42,41351201105,85,31401259,99,5170
805,65,315514013098,416514015,314,6190
908,37,418016014512,711,818516021,620,6215
10012,11120017016018,217,121018030,329,2235
11016,815,422019518024,823,52351954139,6260
12022,320,624021519532,731,125521553,752280
13027,224,926023021040,538,12752306764,7305
14035,632,928525022552,349,629525085,682,9325
15044,541,43002652406561,9315265105102350
16054,851,232028526079,576335285129125370
1808075360320290115110375320186181415
200109103400355320157151420355254248465
220144137440390355209201460390338330510
Transmittable torque at different mounting pressures.
The torque for sizes ≥100 can be increased by using ETP-HFC®

TOLERANCES

Shaft h7 for h8
Hub H7.

MOUNTING ADVICE

The contact surfaces L and L1 must be completely covered by the shaft and hub. The oil for the pump should be a transmission oil type 80 W. For other hub materials, for example aluminium, contact us.

MOUNTING PRESSURE

The mounting pressure is normally 1000 bar. Max mounting pressure 1200 bar. Dismantling requires approx. 200 bar higher pressure than for mounting.

ETP-HYLOC can be designed to suit special applications on request, and also larger sizes are available.


ETP Hyloc is easy to positionGood runout, easy to position

In this straightening line for steel, the forming rollers are fastened with ETP-HYLOC. The position of the rollers relatively to each other along the shafts are exactly adjusted, it will not change during pressurising. The radial runout is minimised and the change of rollers facilitated. High radial forces can be transmitted with ETP-HYLOC, as the connection is solid all through.


ETP Hyloc is simple to adjustGood runout, simple to adjust

ETP-HYLOC, due to its robust design, is suited for difficult environments and heavy operations. Here the feed rollers are fastened in a steel mill. Adjustment of the rollers is easy to do and with high precision. When in operation the good runout is important. When the rollers need to be changed the quick dismantling is valuable to decrease down time.


Thin hubGood runout, thin hub

Fastening and centering of a turbine runner puts high requirements on the connection. Often a relatively soft material is used in the hub, which should be subject to a limited tension. The moderate and even surface pressure from ETP-HYLOC works well also with thin walled hubs. The high speeds require good runout. Mounting and adjusting is made easy and fast due to the easy pressure setting.

ETP Hyloc Precision fasteningPrecision fastening, quick adjustment

Fastening of the measuring shaft and the part which will be subject to a torque, in this torque test rig in the automobile industry, are both done with ETP-HYLOC. Precision, no backlash, limited surface pressure that does not damage the surfaces and quick change of parts to be tested are important factors.


High axial forcesHigh axial forces, simple adjustment

Four chop and trimming shears in this machine, which belongs to a processing line for steel, must be accurately synchronised. On each wheel there are a number of knives, which trim front and back end coils which passes through. ETP-HYLOC centres and fastens the wheels. The knives are synchronised along and around the shafts and maintain their accurate positions during pressurising. The uneven dynamic loads in the radial direction are transferred through ETP-HYLOC.


Dynamic loadsAccurate positioning, dynamic loads

Four chop and trimming shears in this machine, which belongs to a processing line for steel, must be accurately synchronised. On each wheel there are a number of knives, which trim front and back end coils which passes through. ETP-HYLOC centres and fastens the wheels. The knives are synchronised along and around the shafts and maintain their accurate positions during pressurising. The uneven dynamic loads in the radial direction are transferred through ETP-HYLOC.


No backlashHigh torque,
no backlash

The gear for operating a machine for production of pet food is fastened with ETP-HYLOC. Important at the selection was the accurate adjustment to avoid backlash, the possibility to take up high peak loads at emergency stops, as well as the easy and quick mounting.

High radial forceQuick changesHigh radial force, quick changes

Centering and fastening of the feed rollers in a processing line for steel working. ETP-HYLOC centres the rollers, take up and transfers the high and irregular radial forces to the shaft. Adjustments to change worn out rollers and change to other profiles are done with a minimum of downtime, with the help of only a hydraulic handpump.


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