ETP-HYLOC

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- Published: Tuesday 19th April 2016
- Updated: Friday 2nd June 2017

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 Diagram ETP Hyloc Specification Icons

Technical specification ETP-HYLOC® Notation ETP-HYLOC XXX

ETP-HYLOC®	Dimensions					Transmittable torque or axial force at 1000 bar						H	Polar moment of inertia J kgm² • 10^-3	Weight kg
	Dimensions					Shaft h7		Shaft h8		Min hub D_H mm
	d mm	D mm	D₁ mm	L mm	L₁ mm	T kNm	F_A kN	T kNm	F_A kN	Yieldpoint N/mm²
	d mm	D mm	D₁ mm	L mm	L₁ mm	T kNm	F_A kN	T kNm	F_A kN	>300	>400
50	50	77	101	56	82	2,6	70	2,4	70	110	105	M8	3,2	2,4
60	60	89	113	64	90	4,6	130	4,3	130	140	125	M8	5,4	3,1
70	70	102	122	74	100	7,9	210	7,4	200	170	145	M8	8,7	4,1
80	80	115	135	84	110	12,1	290	11,5	280	200	160	M8	14	5,4
90	90	128	148	94	120	17,1	380	16,2	360	235	180	M12	23	7,0
100	100	140	160	104	130	24,2	485	23,1	460	270	200	M12	34	8,6
110	110	154	173	114	140	32,9	595	31,5	570	295	220	M12	51	11
120	120	168	186	124	150	43,2	720	41,6	690	320	240	M12	76	14
130	130	182	200	134	160	53,8	825	51,4	790	350	260	M16	110	17
140	140	196	213	144	170	68,9	985	66,2	945	375	280	M16	150	21
150	150	210	227	154	180	85,4	1135	82,3	1095	400	300	M16	210	25
160	160	224	240	164	190	104	1305	100	1260	425	320	M16	290	30
180	180	252	267	184	210	150	1675	146	1625	480	360	M16	500	42
200	200	280	293	204	230	206	2060	200	2000	535	400	M16	830	56
220	220	308	320	224	250	273	2485	266	2415	585	435	M16	1300	73
T = Transmittable torque when axial force is 0.									H: Threads for easy handling. Dimension subject to alterations without notice.
F_A = Transmittable axial force when torque is 0.
D_H = Outer diameter for hub material in steel.

ETP-HYLOC®	600 bar					800 bar				1200 bar
	Shaft		Min hub D_H mm			Shaft		Min hub D_H mm		Shaft		Min hub D_H mm
	h7	h8	Min hub D_H mm			h7	h8	Min hub D_H mm		h7	h8	Min hub D_H mm
	T kNm	T kNm	Yieldpoint N/mm²			T kNm	T kNm	Yieldpoint N/mm²		T kNm	T kNm	Yieldpoint N/mm²
	T kNm	T kNm	>200	>300	>400	T kNm	T kNm	>300	>400	T kNm	T kNm	>400
50	0,8	0,8	90	90	90	1,6	1,4	95	90	3,3	3,1	130
60	1,1	1,1	115	105	95	3,3	3	120	110	5,9	5,6	155
70	2,4	2,4	135	120	110	5,8	5,3	140	125	9,9	9,5	170
80	5,6	5,3	155	140	130	9	8,4	165	140	15,3	14,6	190
90	8,3	7,4	180	160	145	12,7	11,8	185	160	21,6	20,6	215
100	12,1	11	200	170	160	18,2	17,1	210	180	30,3	29,2	235
110	16,8	15,4	220	195	180	24,8	23,5	235	195	41	39,6	260
120	22,3	20,6	240	215	195	32,7	31,1	255	215	53,7	52	280
130	27,2	24,9	260	230	210	40,5	38,1	275	230	67	64,7	305
140	35,6	32,9	285	250	225	52,3	49,6	295	250	85,6	82,9	325
150	44,5	41,4	300	265	240	65	61,9	315	265	105	102	350
160	54,8	51,2	320	285	260	79,5	76	335	285	129	125	370
180	80	75	360	320	290	115	110	375	320	186	181	415
200	109	103	400	355	320	157	151	420	355	254	248	465
220	144	137	440	390	355	209	201	460	390	338	330	510
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.

Good 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.

Good 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.

Good 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.

Precision 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 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.

Accurate positioning, dynamic loads

High 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 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.

ETP-HYLOC

Operation

Benefits and features