Linear Technical

Quad Linear PLS-II Technical Description

Two parallel guide shafts (4) form, together with a special guide profile (5), the body of the profile linear units. A rotating movement is converted by the spindle into a linear movement of the guide table (14).

1.	end element (fixed)
2.	cover band fixation
3.	spindle
4.	guide shaft
5.	guide profile
6.	cover
7.	cover band
8.	wiper
9.	spindle lubrication
10.	roller cover
11.	roller
12.	guide shaft lubrication
13.	lubricating nipple (guide shaft lubrication)
14.	guide table
15.	end element (loose)

PLS-II Acme Spindle

Spindle: steel, rolled version
Guide nut: Red brass, RG7
Versions: right hand thread
                left hand thread
              right and left hand thread
                split spindle
Middle speed range, self-locking, spindle with antifriction bearing for all versions

PLS-II Ball Screw
Spindle

Spindle: steel, rolled version (standard) , steel, dragged version (upon request)
Guide nut: steel, with recirculating ball race
Versions: right hand thread
left hand thread
split spindle
High speed range, not self-locking, spindle with antifriction bearing for all versions

Guide Table

Extruded aluminum, clear anodized

Guide Shafts

Heat-treated steel, inductively hardened

End Elements

Extruded aluminum, black anodized

Bearing

Spindle bearing
Fixed bearing:
(pin side) single-row, covered angular contact bearing

Spindle bearing
Fixation bearing:
single-row, sealed ball bearing

Mounting of the
Linear Unit

By means of either PLS mounting clamps, mounting plates or slot stones (only for PLS-II 60 and 80 on end elements)

Positioning Accuracy


Type of Drive	Positioning Accuracy	Self-locking
ACME Spindle	±0.15 mm / 300mm travel	Yes
Ball Screw Spindle	±0.1 mm / 300 mm travel	No

Speed

ACME Spindel
Type	Pitch
PLS-II 30	3 mm
PLS-II 40	4 mm
PLS-II 50	4 mm
PLS-II 60	4 mm
PLS-II 80	5 mm

Ball Screw Spindle
Type	Pitch
PLS-II 30	3 mm
PLS-II 40	4 mm
PLS-II 50	5 mm
PLS-II 60	5 mm
PLS-II 60	20 mm
PLS-II 60	50 mm
PLS-II 80	5 mm
PLS-II 80	10 mm

necessary spindle rpm	speed [m/min] x 100
	pitch [mm]

Control of the Spindle Revolution (critical revolution)

Load Data*

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

	Fx	Fy	Fz	Mx	My	Mz	Iy	Iz
Type
PLS-II 30	340	790	790	14	20	22	4.30	6.36
PLS-II 40	1675	1020	1020	23	33	33	14.36	19.85
PLS-II 50	1900	1020	1020	28	49	49	35.45	44.27
PLS-II 60	2400	2550	2550	99	143	143	77.28	111.53
PLS-II 80	3050	2550	2550	124	168	169	201.86	280.73

*Referring to the closed guide table (values static, linear unit is completely supported)

No-load Torques

Type	ACME Spindle	Ball Screw Spindle
PLS-II 30	10 Ncm	10 Ncm
PLS-II 40	20 Ncm	15 Ncm
PLS-II 50	25 Ncm	20 Ncm
PLS-II 60	30 Ncm	25 Ncm
PLS-II 80	40 Ncm	35 Ncm