GN 291-SCRLinear Actuators

Steel, chrome-plated

Steel / Stainless Steel, with Right or Left Hand Thread

Technical datasheet

GN 291-SCR

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Catalogue	d₁	l₁	Max. stroke every	Threaded spindle	d₂	d₃	l₂ Total length	l₃	l₄	m₁	m₂	For parallel key DIN 6885

GN 291-18-65-L1-SCR	18	65	350	TR10x3	6	M 3	l1+140	70	16	17	24	A2x2x12
GN 291-18-165-L1-SCR	18	165	350	TR10x3	6	M 3	l1+140	70	16	17	24	A2x2x12
GN 291-18-265-L1-SCR	18	265	350	TR10x3	6	M 3	l1+140	70	16	17	24	A2x2x12
GN 291-30-100-L1-SCR	30	100	1250	TR14x4	8	M 4	l1+205	102.5	16	23	38	A2x2x12
GN 291-30-150-L1-SCR	30	150	1250	TR14x4	8	M 4	l1+205	102.5	16	23	38	A2x2x12
GN 291-30-200-L1-SCR	30	200	1250	TR14x4	8	M 4	l1+205	102.5	16	23	38	A2x2x12
GN 291-30-300-L1-SCR	30	300	1250	TR14x4	8	M 4	l1+205	102.5	16	23	38	A2x2x12
GN 291-40-70-L1-SCR	40	70	1570	TR20x4	12	M 5	l1+235	117.5	17	42	54	A4x4x12
GN 291-40-170-L1-SCR	40	170	1570	TR20x4	12	M 5	l1+235	117.5	17	42	54	A4x4x12
GN 291-40-220-L1-SCR	40	220	1570	TR20x4	12	M 5	l1+235	117.5	17	42	54	A4x4x12
GN 291-40-270-L1-SCR	40	270	1570	TR20x4	12	M 5	l1+235	117.5	17	42	54	A4x4x12
GN 291-40-320-L1-SCR	40	320	1570	TR20x4	12	M 5	l1+235	117.5	17	42	54	A4x4x12
GN 291-50-65-L1-SCR	50	65	1565	TR20x4	12	M 6	l1+240	120	18	42	54	A4x4x12
GN 291-50-115-L1-SCR	50	115	1565	TR20x4	12	M 6	l1+240	120	18	42	54	A4x4x12
GN 291-50-215-L1-SCR	50	215	1565	TR20x4	12	M 6	l1+240	120	18	42	54	A4x4x12
GN 291-50-265-L1-SCR	50	265	1565	TR20x4	12	M 6	l1+240	120	18	42	54	A4x4x12
GN 291-50-315-L1-SCR	50	315	1565	TR20x4	12	M 6	l1+240	120	18	42	54	A4x4x12
GN 291-60-220-L1-SCR	60	220	1520	TR24x5	14	M 8	l1+285	142.5	19	58	70	A5x5x16
GN 291-60-720-L1-SCR	60	720	1520	TR24x5	14	M 8	l1+285	142.5	19	58	70	A5x5x16

** usually not available from stock

Types

Type R1: Right hand thread, shaft journal at one end

Type R2*: Right hand thread, shaft journal at both ends

Type L1: Left hand thread, shaft journal at one end

Type L2*: Left hand thread, shaft journal at both ends

* usually not available from stock

Guide tube

Version in Steel

Tube DIN 2391

Steel, chrome-plated SCR

Version in Stainless Steel*

Tube DIN 2462

Stainless Steel AISI 304 NI

* usually not available from stock

Spindle with trapezoidal thread

Steel respectively

Stainless steel AISI 303

Ball bearing

Lead nut

Gunmetal

End plug

Plastic

In addition to the standard stroke lengths specified in the above table for linear actuators GN 291 any stroke inside the maximum stroke length is available.

Besides the extensive range of tube clamp connectors there are a number of different components for fixing the linear actuators and to build linear actuator connectors.

In order to measure the displacement and positioning of the linear actuator connectors, digital as well as analogue position indicators can be installed and furthermore the guide tube can be provided with a longitudinal scale.

Longitudinal scales GN 299

Linear actuator connectors, tube clamp connectors and accessory have to be ordered separately.

Tube DIN 2462 in Stainless Steel NI

Stainless Steel Characteristics

Technical description of Linear actuators

Ø Linear actuator	Fx in N	Fy in N	-	-	Fz in N	-	-	Mx in Nm	My in Nm	Mz in Nm
Ø Linear actuator	Fx in N	l = 500	l = 1000	l = 1500	l = 500	l = 1000	l = 1500	-	-	-
18	400	80	-	-	65	-	-	1.5	4.5	4.5
30	850	500	70	15	550	55	10	6.5	15	15
40	1100	2150	250	65	1900	150	50	15	42	42
50	1750	3100	650	150	3100	650	150	29	69	69
60	2600	4550	1500	400	4550	1400	350	45	125	125

The load data are applicable to linear actuators GN 291, GN 292 GN 293 made of Steel (SCR) or Stainless Steel (NI). The specified forces Fy and Fz cause a flexure of the guide tube of approx. 0.5mm.

Description

A lead nut moves in axial direction over the ball bearing trapezodial thread spindle of the linear actuator. The follower ensures the anti-rotation and makes the link to the different linear actuator connectors. The linear actuators have been designed for manual operation (handwheel).

The positioning accuracy is 0.2 mm / 300 mm stroke, the maximum reverse play is 0.1 mm.

Guide tubes are available in chromed Steel (SCR) or stainless steel (NI) non-rusting. They made with the tolerance range of precision steel tubes DIN 2391 or DIN 2462.

A wide variety of different components are available in the tube clamp connector program to fix the linear actuators in place and to uprade these into linear actuator connectors.

Also, digital position indicators (DD52R / DD51) may be attached to measure the displacement or the positioning.

In applications where high torsion forces Mx occur, linear actuators with square tubing or double tube linear actuators should be given preference.

A wide variety of different components from the tube clamp connector program is also available for the square tubings. The linear actuator connectors are composed of two-part elements, with the effect that the precision of the square tubes involves no special requirements.

for Standard Stroke Lengths l₁ of the Linear Actuators GN 291

Ø Linear actuator	l₁	l₂	l₃	z
	Stroke			z
	(Standard lengths)			Scale length respectively highest figure
18	65	82.5	147.5	90
18	165	82.5	247.5	190
18	265	82.5	347.5	290
30	100	122.5	222.5	120
30	150	122.5	272.5	120
30	200	122.5	322.5	220
30	300	122.5	422.5	320
40	70	142.5	217.5	90
40	170	142.5	317.5	190
40	220	142.5	367.5	240
40	270	142.5	417.5	290
40	320	142.5	467.5	340
50	65	147.5	217.5	90
50	115	147.5	267.5	190
50	215	147.5	367.5	240
50	265	147.5	417.5	290
50	315	147.5	467.5	340
60	220	182.5	402.5	240
60	720	182.5	902.5	740

Specification

Scale engraved with laser precision

Information

The longitudinal scales GN 299 of type A and B are normally used in connection with the linear actuators Linear Actuators and Square Linear Actuators GN 291.1, the scales of type C and D are normally used for the linear actuators Linear Actuators GN 292 and Linear Actuators GN 293.

Longitudinal scales can only be ordered together with linear actuators.