Linear Technical

Linear Units EP-EPX Technical Description
Back to Linear Units EP-EPX Intro Page

A threaded spindle (5) with corresponding guide nut (6) which is supported between the guide tubes (9) transmits a rotating movement onto the guide table (7). The guide table of the linear unit EPX is composed of two guide tables connected by a connecting plate (8).

1.	End element
2.	Angular ball bearing
3.	Slide bearing (as an option)
4.	End cap
5.	Spindle
6.	Guide nut
7.	Guide table
8.	Connecting plate (EPX only)
9.	Guide tube
10.	End element
11.	Angular ball bearing
12.	Slide bearing (as an option)
13.	Seal
14.	Slotted Round nut

ACME Spindle

Spindle: steel, stainless steel optional, 18-60 chased, 80 whirled version. Guide nut: RG 7. Medium speed range, self-locking, as an option antifriction or slide bearing.

Guide Tube

Precision steel tube complying with DIN EN 10305 stainless steel tube complying with DIN 17458. Material: Galvanized steel. Tubes are additionally polished. Peak-to-valley height R_a=0.4µm.

Bearing

Spindle bearing: Type 18 flange bearing 30-80 inclined ball bearing (sealed) slide bearing as an option. Guide table bearing: slide bushing.

Mounting of the Linear Unit

According to installation the linear unit can be mounted using the end element without further machining.

Positioning Accuracy


Type of Drive	Positioning Accuracy	Self-locking
ACME thread spindle	± 0.2mm / 300 mm Hub travel	Yes

Speed

Type

Pitch

*max. spindle rmp	=	speed [m/min] x 1000
		pitch [mm]

*max. spindle revolution with slide bearing	80 min ^-1
with ball bearing	250 min ^-1

EP 18 / EPX 18

2 mm

EP 30 / EPX 30

3 mm

EP 40 / EPX 40

4 mm

EP 50 / EPX 50

4 mm

EP 60 / EPX 60

5 mm

EP 80 / EPX 80

6 mm

Load Data*

F	force	[N]
M	moment	[Nm]
I	geom. moment of inertia	[cm⁴]

	Fx	Fy			Fz			Mx	My	Mz	Iy	Iz
Total Length [mm]	500	500	1000	1500	500	1000	1500
Type
EP 18	400	200	100	-	100	70	-	20	30	35	1.03	21.39
EP 30	800	1000	800	500	550	300	100	60	60	75	3.47	46.57
EP 40	1000	3500	2600	1300	2000	580	120	120	130	150	14.84	198.06
EP 50	1700	3800	2300	2050	3000	670	170	160	200	260	30.81	319.84
EP 60	2500	6600	5400	4900	6000	2600	330	300	340	480	65.88	795.90
EP 80	4500	11000	9000	7500	8000	4800	700	400	530	620	237.41	3168.98
EPX 18	400	270	170	-	130	100	-	40	45	70	1.03	21.39
EPX 30	800	1400	1200	700	650	450	200	80	110	140	3.47	46.57
EPX 40	1000	6000	3100	1800	2200	680	220	160	190	240	14.84	198.06
EPX 50	1700	7700	5000	2500	3300	830	310	240	345	510	30.81	319.84
EPX 60	2500	11000	9000	7800	7000	2900	580	520	610	910	65.88	795.90
EPX 80	4500	14000	11700	10100	9100	3700	750	650	780	1100	237.41	3168.98

*Referring to the guide table (guide element deflection f=0.5mm, static end elements supported).

No-load Torques

Type	Spindle with Slide Bearing	Spindle with ball bearing
EP 18	30 Ncm	30 Ncm
EP 30	60 Ncm	75 Ncm
EP 40	70 Ncm	85 Ncm
EP 50	110 Ncm	125 Ncm
EP 60	140 Ncm	160 Ncm
EP 80	100 Ncm	-



Type	Spindle with Slide Bearing	Spindle with ball bearing
EPX 18	40 Ncm	45 Ncm
EPX 30	70 Ncm	75 Ncm
EPX 40	80 Ncm	85 Ncm
EPX 50	120 Ncm	125 Ncm
EPX 60	150 Ncm	160 Ncm
EPX 80	140 Ncm	-