LF-36 outer diameter 20mm short shaft intelligent toilet buffer accessory slow drop damper

Classification:

Household appliances damper

Smart bathroom damper

110 °-120 ° rotary damper

one-way rotary damper

Message

sales@longji-lf.com

Product Description

This high-quality plastic buffer has an outer diameter of 20mm, and this series of products comes in various total lengths. It is divided into unidirectional damping (with resistance in both counterclockwise and clockwise directions). Unidirectional rotary dampers are widely used in various flip products to slow down the speed of the cover plate's descent. Installing a damper helps prolong the product's lifespan and enhances user experience. This series of unidirectional rotary dampers features easy installation, high cost-effectiveness, and strong durability.

Product specifications:

Model (short shaft)	Torque	Damping rotation direction	Maximum usage angle	Length of tail mounting position
LF-36-CW-10KG	10±2kgf.cm	Clockwise	110°	3mm/5mm
LF-36-CCW-10KG	10±2kgf.cm	Counterclockwise	110°	3mm/5mm
LF-36-CW-20KG	20±2kgf.cm	Clockwise	110°	3mm/5mm
LF-36-CCW-20KG	20±2kgf.cm	Counterclockwise	110°	3mm/5mm
LF-36-CW-30KG	30±2kgf.cm	Clockwise	110°	3mm/5mm
LF-36-CCW-30KG	30±2kgf.cm	Counterclockwise	110°	3mm/5mm

*Note: 1) The marked torque is measured under standard load conditions at a temperature of 23°C and humidity of 80%, with a slow drop rate of 15° per second.
*Note: 2) Torque customization can be provided by changing the viscosity of the damper oil.
*Note: 3) The maximum operating temperature range for this type of damper is -40°C to +90°C.
*Note: 4) The reverse torque for this type of damper is generally about 20% of the forward torque.

Damper appearance size diagram

Damper product material

Shell material	Rotary shaft material	(Sealing ring)	(Damping oil)
(PBT)	(PA)	(Silicone)	(Silicone oil)

*Note: This damper's rotary shaft material includes PA and zinc alloy; it is recommended to use zinc alloy for shafts with torque exceeding30kgf.cm.

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 affect the viscosity of the damping oil, causing torque output to decrease as temperature increases; conversely, it increases as temperature decreases. 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.

Usage method for pressure-type dampers:
A. This series of rotary buffers starts falling from a vertical position (as shown in Figure A) to a horizontal position; due to design, the torque at the starting position is weakest, gradually increasing as the angle rotates so that the cover can close slowly at last. As shown in Figure B when the cover starts falling from a horizontal position, since gravity-induced torque on it is zero vertically while maximum at its final position, it cannot fully close.

B. In examples illustrated when using rotary buffers, please calculate required torque using following method.

Example:
Weight M of cover:1kg
Length L from rotary shaft to edge of cover plate:0.5m
Load Torque:T=1×0.5×9.8÷2=2.45N•m
From above calculation we select buffer LF-18E-25kgf.cm (25kgf.cm≈2.45Nm).

C. Please minimize gaps between rotary shafts and connecting components; if gaps exist during rotation drop speed will be affected.

4.The buffer's torque will also change according to variations in environmental temperature.The pattern shows that when environmental temperature rises,the torque drops while action time speeds up;when environmental temperature drops,the torque rises while action time slows down.This occurs because viscosity changes with environmental temperature variations.Nevertheless ,when environmental temperatures return to normal ,the torques will revert back to their original values.

5.The rotation angle for LF-36 series rotary buffers is110 degrees; exceeding this angle may damage buffers so please install external stop mechanisms.Action angles are based on closed positions.

Key words:

Slow drop damper

LF-36 outer diameter 20mm axis extended slow descent closed high torque unidirectional rotating damper

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