FRICTION HINGES (CONSTANT TORQUE HINGES)

Friction hinges (constant torque hinges, positioning hinges) are pure mechanical components, used to hold an object in the desired position. Typical applications are monitors in laptop and industrial applications, special suitcases, office equipment, safety equipments, lids, doors, arms, seat rests, etc.

 

The working principle is based on friction between input and output shaft; that's why position hinges are also called friction hinges; to generate the desired torque an according number of clips is put on the shaft. Precision clips and shaft components, a proprietary lubricant, and a proprietary manufacturing process form the basis for Reell’s technology for providing consistent torque over life. Torque increments are achieved through the addition of clips and allow custom torque specifications with standard components. Standard torque tolerance over life is a maximum of +/-15% with zinc and +/- 20% with insert plastic molded parts.

 

One of the main qualitiy aspects of friction hinges is the difference between static and dynamic torque. Clip technology allows a close and predictable relationship between static and dynamic torque, and specification of higher torques without compromising torque tolerance or life. The breakaway torque in our hinges is really close to the dynamic torque which provides a convinient jerkfree movement - and due to "Reell's Torque Engine" with clip technology the torque remains consistent over life.

 

The main features of our friction hinges:

  • constant torque over whole angular range
  • extremely small volume
  • no backlash (only small spring back after taking back the driving torque)
  • designed for indoor applications (for outdoor applications special corrosion protection required)
  • high lifetimes
  • custom designs possible

The mounting area requires special consideration because our friction hinges provide high torque in a small package. Therefore the mounting must be able to support the high forces and torques without being distorted or suffer from material fatigue.

 

Positioning hinges are available for external mounting or torque insterts for integration into the rotating axis. Additional versions include VESA-Monitor-Mounts and spherical joints with swivel function used as a tablet holder or for lighting applications . With 60 degrees free movement in all directions perfect for stabilizing tablets and lights in the right position!

 

FRCITION HINGES FOR EXTERNAL MOUNTING (RT / PHx / MHx)

The constant torque hinges on this page are suited for mount to a customer mechanics.

 

Special care has to be taken in the mounting area. The friction hinges provide a lot of torque in a small package which has to be supported by a fairly small mounting area. So this area has to be designed in a way that the torque can be supported without distortion or material breakage due to fatigue.

  • various models
  • equal torque in either direction standard
  • PHK, PH35, MH15 and MH18 with optionally reduced torque in one direction
  • NEW: friction hinges in stainless steel (PHCS) and Aluminum (PHCA)
name image setting angle torque
Nm
information
RT050
  drawing 2D (pdf)
   drawing 3D (igs)
Reell constant torque positioning hinge RT-series, symmetrical 360° 0.11
0.23
0.34
- up to 50,000 cycles
- torque +/-30%
- clip technology
RT070
  drawing 2D (pdf)
   drawing 3D (igs)
360° 0.34
0.45
0.56
0.68
0.79
0.90
- up to 50,000 cycles
- torque +/-20%
- clip technology
RT100
  drawing 2D (pdf)
   drawing 3D (igs)
360° 0.90
1.36
1.81
2.26
- up to 50,000 cycles
- torque +/-20%
- clip technology
RT120
  drawing 2D (pdf)
   drawing 3D (igs)
360° 2.26
3.39
4.52
5.65
- up to 50,000 cycles
- torque +/-20%
- clip technology
PHT
  drawing 2D (pdf)
   drawing 3D (igs)
Reell constant torque positioning hinge PHT-series, asymmetrical 360° 2.0 / 0.5
4.0 / 0.5
6.0 / 0.5
- up to 10,000 cycles
- torque +/-20%
- clip technology
- differing torque
   for each direction
PHA (8mm)
    drawing 2D (pdf)
   drawing 3D (igs)
Reell constant torque positioning hinge PHA-series, symmetrical 360° 0.28
0.37
0.46
0.55
0.65
- up to 25,000 cycles
- torque +/-15%
- spring back < 1°
- clip technology
PHK
left, straight
    drawing 2D (pdf)
   drawing 3D (igs)
right, straight
    drawing 2D (pdf)
   drawing 3D (igs)
dual, straight
    drawing 2D (pdf)
   drawing 3D (igs)
left, angled 90°
    drawing 2D (pdf)
   drawing 3D (igs)
right, angled 90°
    drawing 2D (pdf)
   drawing 3D (igs)
dual, angled 90°
    drawing 2D (pdf)
   drawing 3D (igs)
Reell constant torque positioning hinge PHK-series, symmetrical 360° 1.5
2.5
3.5
4.5
5.0
5.5
- up to 20,000 cycles
- torque +/-20%
- spring back < 1°
- clip technology
PHB*
left, straight holes
    drawing 2D (pdf)
   drawing 3D (igs)
right, straight holes
    drawing 2D (pdf)
   drawing 3D (igs)
dual, straight holes
    drawing 2D (pdf)
   drawing 3D (igs)

left, countersunk holes
    drawing 2D (pdf)
   drawing 3D (igs)
right, countersunk holes
    drawing 2D (pdf)
   drawing 3D (igs)
dual, countersunk holes
    drawing 2D (pdf)
   drawing 3D (igs)
Reell constant torque positioning hinge PHB-series, symmetrical 360° 0.44
0.78
1.22
1.57
2.01
2.35
2.79
- up to 20,000 cycles
- torque +/-20%
- spring back < 1°
- clip technology
PHC*
straight holes
    drawing 2D (pdf)
   drawing 3D (igs)
countersunk holes
    drawing 2D (pdf)
   drawing (igs)

Reell constant torque positioning hinge PHC-series, symmetrical 270° 0.4
0.8
1.2
1.6
2.0
2.4
2.8
- up to 20,000 cycles
- torque +/-20%
- spring back < 1°
- clip technology
aluminium version of the PHC!
PHCA
straight holes
    drawing 2D (pdf)
   drawing 3D (igs)

Reell Aluminum constant torque positioning hinge PHCA-series, symmetrical 270° 0.4
0.8
1.2
1.6
2.0
2.4
2.8
- material: aluminum
- up to 50,000 cycles
- torque +/-20%
- spring back < 1°
- clip technology
stainless steel version of the PHC!
PHCS
straight holes
    drawing 2D (pdf)
   drawing 3D (igs)
countersunk holes
    drawing 2D (pdf)
   drawing 3D (igs)
Reell stainless steel constant torque positioning hinge PHCS-series, symmetrical 270° 0.4
0.8
1.2
1.6
2.0
2.4
2.8
- material: 316 stainless steel
- up to 20,000 cycles
- torque +/-20%
- spring back < 1°
- clip technology
PHL*
    drawing 2D (pdf)
   drawing 3D (igs)
Reell constant torque positioning hinge PHL-series, symmetrical 270° 0.9
1.4
1.8
2.3
2.8
3.4
- up to 20,000 cycles
- torque +/-20%
- spring back < 1°
- clip technology
PH35*
    drawing 2D (pdf)
   drawing 3D (igs)
Reell heavy duty constant torque one directional positioning hinge PH35-series 270° 5.65 / 1.13
6.78 / 1.13
7.91 / 1.13
9.04 / 1.13
10.17 / 1.13
11.30 / 1.13
- up to 20,000 cycles
- torque +/-10%
- spring back < 1°
- clip technology;
- one direction
   with reduced torque
MH12**
    drawing 2D (pdf)
   drawing 3D (igs)
Reell Nylon constant torque positioning hinge MH12-series, symmetrical 270° 0.4
0.8
1.2
1.6
- up to 10,000 cycles
- torque +/-20%
- spring back < 1°
- clip technology;
MH13**
    drawing 2D (pdf)
   drawing 3D (igs)
Reell Nylon constant torque positioning hinge MH13-series, symmetrical 270° 1.0
2.0
3.0
- up to 25,000 cycles
- torque +/-10%
- spring back < 1°
- clip technology;
MH14
    drawing 2D (pdf)
   drawing 3D (igs)
Reell Nylon constant torque positioning hinge MH14-series, symmetrical 270° 1.4
1.8
2.2
2.6
3.0
3.4
3.8
4.2
4.6**
5.0**
5.4**
5.8
- up to 10,000 cycles
- torque +/-20%
- spring back < 1°
- clip technology;
- ** only on request
MH15
    drawing 2D (pdf)
   drawing 3D (igs)
Reell Nylon constant torque positioning hinge MH15-series, symmetrical or one directional 270° 2.0 / 1.25
3.0 / 1.88
4.0 / 2.50
5.0 / 3.13
6.0 / 3.75
7.0 / 4.38
8.0 / 5.00
- up to 20,000 cycles
- torque +/-10%
- spring back < 1°
- clip technologiy;
- balanced or one direction
   with reduced torque
MH18
    drawing 2D (pdf)
   drawing 3D (igs)
Reell Nylon constant torque positioning hinge MH18-series, symmetrical or uni-idrectional 270° 4.0 / 1.8
6.0 / 1.8
8.0 / 1.80
- up to 20,000 cycles
- torque +/-25%
- spring back < 1°
- clip technology;
- balanced or one direction
   with reduced torque
*: these finishes are available: without finish (zinc) or painted (powder coated) black
**: these finishes are available: black (in higher quantities special colors)
marked in bold verions are available as sample / in lower quantities (for versions with different colors / holes not all designs)

FRICTION HINGES AS TORQUE INSERTS (TI)

The constant torque hinges on this page are prepared to be integrated into the rotating axis which means they become integral part of the customer mechanics.

Special care has to be taken in the mounting area. The friction hinges provide a lot of torque in a small package which has to be supported by a fairly small mounting area. So this area has to be designed in a way that the torque can be supported without distortion or material breakage due to fatigue.

  • 5 models
  • torque range from 0.2Nm to 8Nm per hinge
  • two torque levels for TI200 series (one direction 65% of the other)
name image setting angle torque
Nm
information
TI-C5M
84002-xxx
    drawing 2D (pdf)
   drawing 3D (igs)
Reell miniature constant torque insert positioning hinge TI-C5M-series, symmetrical 360° 0.15
0.25
0.30
- up to 30,000 cycles
- torque +/-25 ... +/-30%
- spring back < 1°
- clip technology
TI-120-X.XX - XX
(former MH20-0yy)
20-0yy
    drawing 2D (pdf)
   one fin, drawing 3D (igs)
   two fins, drawing 3D (igs)
Reell miniature constant torque insert positioning hinge TI-120-series, symmetrical 360° 0.25
0.35
0.50
0.65
0.80
1.00
1.20
- up to 25,000 cycles
- torque +/-20 ... +/-45%
- spring back < 1°
- clip technology
TI-140-X.XX - XX
(former MH40-0yy)
40-xyy
    drawing 2D (pdf)
   drawing 3D (igs)
Reell constant torque insert positioning hinge TI-140-series, symmetrical 360° 1.4
1.8
2.2
2.6
3.0
3.4
3.8
4.2
- up to 25,000 cycles
- torque +/-20 ... +/-30%
- spring back < 1°
- clip technology
TI-150-X.XX-X - XX
    drawing 2D (pdf)
   drawing 3D (igs)
Reell constant torque insert positioning hinge TI-150-series, asymmetrical 360° 2.0
3.0
4.0
- up to 25,000 cycles
- static torque +/-10% of dynamic torque
- spring back < 1°
- clip technology
TI-160-X.XX-X - XX
    drawing 2D (pdf)
   drawing 3D (igs)
Reell constant torque insert positioning hinge TI-160-series, asymmetrical 360° 4.0
5.0
6.0
- up to 25,000 cycles
- static torque +/-10% of dynamic torque
- spring back < 1°
- clip technology
TI-220-X.X
7-0yy
    drawing 2D (pdf)
    mounting manual (pdf)
   drawing 3D (igs)
Reell constant torque insert positioning hinge TI-220-series, one-directional (asymmetrical) 360° CCW / CW
1.5 / 0.94
2.0 / 1.25
2.5 / 1.56
3.0 / 1.88
3.5 / 2.19
- up to 10,000 cycles
- torque +/-12 ... +/-26%
- spring back < 1°
- clip technology
- one directional
   with reduced torque
TI-240-X.X
80146-0yy
    drawing 2D (pdf)
    mounting manual (pdf)
   drawing 3D (igs)
yy = torque in Nm x 10
Reell constant torque insert positioning hinge TI-240-series, one-directional (asymmetrical) 360° CCW / CW
4.0 / 2.50
5.0 / 3.13
6.0 / 3.75
7.0 / 4.38
8.0 / 5.00
- up to 20,000 cycles
- torque +/-12 ... +/-20%
- spring back < 1°
- clip technology
- one directional
   with reduced torque
TI-320-X.XX-XX
83560-XXX
    drawing 2D (pdf)
    installation guide (pdf)
   drawing 3D (igs)

Reell heavy duty constant torque insert positioning hinge TI-300-series, symmetrical or one-directional (asymmetrical) 360° 0.50
0.75
1.0
1.25
1.5
- up to 50,000 cycles
- torque +/-20%
- spring back < 1°
- clip technology
TI-340-X.XX-XX
83560-XXX
    drawing 2D (pdf)
   drawing 3D (igs)

360° 2.0
3.0
4.0
5.0
- up to 25,000 cycles
- torque +/-20%(25%)
- spring back < 1°
- clip technology
TI-360-X.XX-XX
83560-XXX
    drawing 2D (pdf)
   drawing 3D (igs)

360° 6.0
8.0
10.0
- up to 25,000 cycles
- torque +/-20%
- spring back < 1°
- clip technology
marked in bold verions are available as sample / in lower quantities (for versions with different colors / holes not all designs)

Monitor Holders

We offer Monitor Holders from two of our partners. On the one hand friction hinges as vesa monitor mount (vTilt) or as spherical joint (SI) of our partner Reell. On the other hand the monitor holders KA-TLG of our partner Sugatsune, which are available as one-axis and two-axis version.

name image setting angle torque
Nm
information
vTilt**
  drawing 2D (pdf)
  mounting manual (pdf)
   drawing 3D (igs)
Reell Precision torque hinges Vesa Monitor Mount 360° 3.0 / 1.88
4.0 / 2.5
5.0 / 3.13
6.0 / 3.75
8.0 / 5.0
5.0 / 0.9
6.0 / 0.9
7.0 / 0.9
8.0 / 0.9
- up to 10,000 cycles
- torque +/-20%(25%) / +/-30%(35%)
- clip technology
- one direction
   with reduced torque
SI-200
    drawing 2D (pdf)
   drawing 3D (igs)
Reell 3-dimensional spherical torque hinge for positioning in several axis Rotation 360°
60° horizontal/vertical
0.2
0.4
- up to 50,000 cycles
- torque +/-30%
SI-300
    drawing 2D (pdf)
   drawing 3D (igs)
Reell 3-dimensional spherical torque hinge for positioning in several axis Rotation 360°
60° horizontal/vertical
1.0 / 0.6
2.0 / 1.4
- up to 50,000 cycles
- torque +/-30%
KA-TLG
    drawing 2D (pdf)
Sugatsune Monitor mount (single or dual axis) 210° / 360° 15 -available as one- or
   two-axis version
*: these finishes are available: without finish (zinc) or painted (powder coated) black
**: these finishes are available: black (in higher quantities special colors)
marked in bold verions are available as sample / in lower quantities (for versions with different colors / holes not all designs)