ETP Hub-Shaft Connections - ETP

Catalogue ETP Hub-Shaft Connections

www.etp.se

Page

/ 36

/ 36

See other catalogues for ETP

Text version of the page

Number of mountings


	ETP connection	Nbr. of mountings
	ETP-EXPRESS 15-35	2000
	ETP-EXPRESS 38-60	1000
	ETP-EXPRESS 70-100	500
	ETP-EXPRESS R and C 15-35	800
	ETP-EXPRESS R and C 38-60	400
	ETP-EXPRESS R 70-80	200
	ETP-TECHNO 15-50	5000
	ETP-TECHNO 60-80	3000
	ETP-TECHNO 90-100	500
	ETP-CLASSIC	100
	ETP-CLASSIC R	50
	ETP-MINI	100
	ETP-MINI R	50
	ETP-HYLOC	2000
	ETP-IMPRESS	200

One of the qualities with the ETP connections are their ability to be mounted quickly and repeatedly with maintained performance and precision.

There is however a limit when the screw/screws will be worn and has to be changed. If the threads are cleaned and regularly lubricated, the guide values in the table can be used. The values indicates when the screws needs to be changed, the ETP connection lasts longer.

For the R and C types it is very important that the screws are well lubricated when tightening, both for proper function and full lifetime capabilities. When used in food processing applications or similar we recommend the lubricants OKS 260 or Molykote D. For other applications Molykote G-n plus can be used.

The value for ETP-IMPRESS indicates when it needs to be dismantled for lubrication of the tapered surfaces. We recommend Molykote G-Rapid plus.

ETP-HYLOC is not recommended for more mountings than acc. to the table.

Fatigue

When the loads are in form of alternating or pulsating torque it is recommended to reduce the transmittable torque, Tr, with the factors according to the table (factor • Tr). The values are based on tests and calculations on the lifetime of ETP connections. The lifetime for the ETP connection increases if the play between the contact surfaces is decreased, for example ETP-CLASSIC can be used on a shaft tolerance of k6, instead of the recommended h8.

ETP-MINI and ETP-HYLOC can take essentially higher fatigue loads. The fatigue loads do not affect ETP-IMPRESS as they go through the hollow shaft.


ETP connection	Alternating	Pulsating
ETP-EXPRESS incl. typ R and C	0,5	0,6
ETP-TECHNO	0,7	0,8
ETP-CLASSIC incl. type R: 15 - 30 mm	0,6	0,7
ETP-CLASSIC incl. type R: 32 -100 mm	0,5	0,6

Radial loads and bending torque

Most friction joints have limited capacity to transmit radial forces and bending torque. High levels of these loads can affect the function of the ETP connection. The values acc. to the diagram and table based on tests can serve as guide lines. ETP-MINI and ETP-HYLOC can transmit essentially higher radial forces than the other connections.


70	—	—	—	—	—	—	—	-	-		—	—	—	—	—	—	—	—	—
60																	■			ETP-CLASSIC incl. type R
ou
50													у	г
эи												/
40																				ETP-TECHNO
tu											г—
30								_л	Z											ETP-EXPRESS incl. type R and C
ou

						V
10
1 и										-
0		в	Е			—	-	_	_	_		_	_		_	_ _		_	_	f mm

10 20 30 40 50 60 70 80

Radial force - shaft size.

90 100


	ETP-EXPRESS incl. type R and C	ETP-TECHNO	ETP-CLASSIC incl. type R	f— НЛ1К11	ETP-HYLOC
	ETP-EXPRESS incl. type R and C	ETP-TECHNO	ETP-CLASSIC incl. type R	ETP-MINI incl. type R	ETP-HYLOC
Bending torque as % of transmittable torque,	5	10	15	30	15