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N20D1 Rotary Buffer

When the N20D1 series rotary buffer starts to fall from the vertical position as shown in Figure A to the horizontal position, since the designed torque is the weakest at the starting position, with the rotation of the buffer angle, the torque gradually increases, so the action of the cover can be slow at the end. close. As shown in Figure B, when the cover starts to fall from the horizontal position, the torque generated by the gravity of the cover is zero in the vertical direction, and the torque of the buffer is the largest in the final position, so the cover cannot be fully closed.

Category:

Rotary buffer

Hotline:

+86-755-8925 3101

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Detailed

Commodity name: N20D1 Rotary Buffer

Product Specifications

model	torque	reverse torque	Torque output direction
N20D(J)1-R103	1N·m (10Kgf.cm)	0.3N·m (3kgf.cm)	Clockwise direction
N20D(J)1-L103	1N·m (10Kgf.cm)	0.3N·m (3kgf.cm)	counterclockwise
N20D(J)1-R203	2N·m (20Kgf.cm)	0.6N·m (6kgf.cm)	Clockwise direction
N20D(J)1-L203	2N·m (20Kgf.cm)	0.6N·m (6kgf.cm)	counterclockwise
N20D(J)1-R303	3N·m (30Kgf.cm)	1.0N·m (10kgf.cm)	Clockwise direction
N20D(J)1-L303	3N·m (30Kgf.cm)	1.0N·m (10kgf.cm)	counterclockwise

Note (1) The specification torque is the data when the temperature is 23±2℃;

Note (2) The white end caps are counterclockwise torque output products, and the black end caps are clockwise torque output products;

Note (3) Special torque customization can be provided by changing the viscosity of the buffer viscous oil;

Note (4) "J" in the model number indicates that the rotating shaft is a product with a zinc alloy shaft.

Maximum use angle	110°
Operating temperature range	-5~50°
Rotary shaft material	PPS
Material of product housing and end caps	PBT
use oil	silicone oil

Different installation specifications

	N20D0	N20D1	N20D2	N20D3	N20D4	N20D5	N20J0	N20J1
Rotary shaft material	PPS	PPS	PPS	PPS	PPS	PPS	ZDC	ZDC
Rotation shaft length	20mm	20mm	10mm	10mm	25mm	25mm	20mm	20mm
Length of rear mounting position	3mm	5mm	3mm	5mm	3mm	5mm	3mm	5mm
product weight	14.6±1g	14.8±1g	10.3±1g	10.5±1g	11.5±1g	11.8±1g	26.5±1g	26.7±1g

Instructions for use

1. When the N20D1 series rotary buffer starts to fall from the vertical position as shown in Figure A to the horizontal position, since the designed torque is the weakest at the starting position, with the rotation of the buffer angle, the torque gradually increases, so the action of the cover can be Finally close slowly. As shown in Figure B, when the lid starts to fall from the horizontal position, the torque generated by the gravity of the lid is zero in the vertical direction, and the torque of the buffer is the largest in the final position, so the lid cannot be fully closed.

2. When using the rotary damper in the example shown in the figure, please calculate the required torque according to the following calculation method.

example:
Cover weight M: 1.5kg
The length L of the rotating shaft from the edge of the cover plate: 0.4m
Load torque: T=1.5×0.4×9.8÷2=2.9N•m
From the above calculation we select the buffer as N20D1-303.

3. Please minimize the gap between the rotary shaft and the joint parts. If there is a gap, the speed of the cover plate will be affected when it is rotated and dropped.

4. The torque of the shock absorber also changes according to the change of the ambient temperature. The change rule is that when the ambient temperature increases, the torque decreases, and the action time is accelerated. When the ambient temperature decreases, the torque increases and the action time slows down. This is because the viscosity of the viscous oil also changes when the ambient temperature changes. But when the ambient temperature returns to normal temperature, the torque will also return to its original value.

5. The rotation angle of the N20D1 series rotary buffer is 110 degrees. If the rotation exceeds 110 degrees, the buffer may be damaged. Please install a stop mechanism externally. The angle of action is based on the closed position.

6. The torque generating direction of the buffer varies according to the structure of the buffer. Please select the appropriate buffer according to different usage methods.

Dimensions

Keywords:

rotary
the
torque
of
is
to
when
buffer
1g
temperature

Key words:

rotary the torque of is to when buffer 1g temperature

1

N20D1 Rotary Buffer

Product Specifications

Different installation specifications

N20D0

Instructions for use

Dimensions