LF-31 slowly pops open the silent damper

Classification:

360 ° Rotary Damper

Message

sales@longji-lf.com

Product Description

The damper mainly utilizes the principle of fluid resistance to reduce vibration and can be used for different gears and torque devices. This silent damper is widely used in computer cases, fan shafts, etc., serving to slowly pop open.

Product specifications:

Model	Torque	Damping rotation direction
LF-31-100G	100±20gf.cm	360° rotation (bi-directional)
LF-31-200G	200±20gf.cm	360° rotation (bi-directional)
LF-31-300G	300±30gf.cm	360° rotation (bi-directional)
LF-31-400G	400±30gf.cm	360° rotation (bi-directional)
LF-31-500G	500±30gf.cm	360° rotation (bi-directional)

Note: 1) The marked torque is the data measured after the damper rotates for 5 turns under conditions of temperature at 23℃ and humidity at 80%, with the test rig motor speed at 36 revolutions per minute;
2) Torque customization can be provided by changing the viscosity of the damper grease.
3) The maximum operating temperature range of the damper: -40℃ to +90℃.
4) This series of dampers can provide gear customization.

Damper appearance size diagram:

Damper gear parameters

Module	# of teeth	(Pitch circle)	(Pressure angle)
.8	.11	.8.8	(20°)

(Damper product material)

(Shell/Top cover)	(Axis)	(Gear)	(Seal ring)	(Damping oil)
PC	POM	POM	Silicone	Silicone oil

Damper characteristics

A. Temperature characteristics:
The torque generated by the damper will change under the influence of environmental temperature. This is because changes in temperature will affect the viscosity of the damping oil, causing torque output to decrease with rising temperatures and increase with falling temperatures. When the temperature returns to normal, the torque also returns to its original value.

B. Speed characteristics:
The torque of the damper will also change when using different rotational speeds. Generally, as rotational speed increases, torque also increases; as rotational speed decreases, torque decreases as well. Additionally, starting torque differs from standard torque.

Specific usage methods for gear dampers

A. Gear and rack fit (linear motion of workpiece)

B. Gear and gear fit (rotational motion of workpiece with angle limitation)

C. Gear and gear fit (no angle limitation)

D. Workpiece directly connected to damper rotation axis

Key words:

LF-38A high resistance bidirectional plastic rotary gear damper

LF-21B small damping gear