Linear Technical

RK Duoline Z Technical Description

Back to Linear Unit RK Duoljne Z Intro Page

A rotating movement is transformed into the linear positioning movement of the guide table (9) by means of a timing belt (2). The upper opening of the guide profile is covered by the timing belt, which protects the linear unit from dust.
The RK Duoline Z 120x80 is available as roller guide and as ball rail system.

1.	timing belt drive
2.	timing belt
3.	guide profile
4.	maintenance opening
5.	pulley box
6.	bearing cover
7.	slide carriage
8.	guide table
9.	cover
10.	timing belt tension belt
11.	ball rails
12.	pulley box cap

Guide Concept

From size 120x80 onward RK Duoline Z is provided optionally with two ball rails.

Timing Belt

GT/HTD timing belt with steel insert:
pitch: 3mm (50)
           5mm (80, 80x160)
           8mm (120x80)
width: 18 mm (50)
            30 mm (80x80)
            50 mm (120x80)

Pulley Boxes

AlMgSi, black anodized

Guide Table

AlMgSi 0.5, clear anodized

Guide Profile

Extruded aluminum, clear anodized

Guide Shafts

Heat-treated steel, inductively hardened. Surface hard-chrome plated HRC 62

Bearing	Shaft bearing: single-row sealed grooved ball bearing. Guide table bearing: 4 sealed rollers (corresponds to a double row angular contact bearing).

Fixation of the Linear Unit	Fixation by means of tapped holes on the side of the pulley box or by means of slot stones in the guide profile.



Timing Belt/Positioning Accuracy


Type	Timing Belt*		Pitch/Width	Active Ø Pulley Wheel	Pulley Wheel Circumference	Positioning Accuracy
50x50	-	HTD 3M**	3 / 18	42.97	134.96	±0.1 mm / 300 mm travel
80X80	GT - 5MR	HTD 5M	5 / 30	63.66	199.89	±0.1 mm / 300 mm travel
80x160	GT 5MR	HTD 5M	5 / 30	63.66	199.89	±0.1 mm / 300 mm travel
120X80	GT - 8MR	HTD 8M	8 / 50	68.75	215.88	±0.1 mm / 300 mm travel
120X80 II	GT - 8MR	HTD 8M	8 / 50	68.75	215.88	±0.1 mm / 300 mm travel
Material: GT = black Neoprene belt HTD = white PU belt *Material: HTD = black PU belt

Speed

necessary revolution rpm	=	speed [m/s] x 1000
		circumference of pulley wheel [mm]

Type

Maximum Travel Speed

RK Duoline Z

5 m/s

Load Data*

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

	Fx	Fx	Fy	Fz	Mx	My	Mz	Iy	Iz
Type	GT timing belt	HTD timing belt
RK Duoline Z 50x50 Ball Rail System	-	430	1000	1200	48	70	60	16.71	25.05
RK Duoline Z 80x80 Ball Rail System	1900	1710	1600	1600	68	100	100	130.25	185.94
RK Duoline Z80x160 Ball Rail System	1900	1710	2750	3300	160	236	200	931.62	323.34
RK Duoline Z 120x80 Roller Guide	3200	2880	2550	2550	118	150	150	189.96	595.86
RK Duoline Z 120x80 Ball Rail System	3200	2880	5000	6000	210	430	370	189.96	595.83
RK Duoline Z 120x80 II Ball Rail System	3200	3200	5000	6000	380	430	370	185.94	554.68

*Referring to the guide table (value static, linear unit is completely supported).

No-load Torques

Type	Roller Guide	Ball Rail System
RK Duoline Z 50x50	-	30 Ncm
RK Duoline Z 80x80	70 Ncm	80 Ncm
RK Duoline 80x160	70 Ncm	80 Ncm
RK Duoline Z 120x80	80 Ncm	110 Ncm
RK Duoline Z 120x80 II	-	100 Ncm