VIBRATION ISOLATION MOUNTS (LIGHTWEIGHT TYPE)

E-9923

Material: Upper and Lower Case： ABS Resin
Spacer：ABS Resin
Spring：SWP-A
Screw Part：Brass
Vibration Isolation Material：Viscoelastic Material
Mounting Plate：SUS304
Multiset Plate：A5052

Surface treatment: 【マルチセットプレート】アルマイト処理

Feature: ■Vibration isolation mount for lightweight loads. Can be used with lightweight loads starting from 300 g which could not be handled by conventional vibration isolation mounts.
■Provides vibration isolation from the low frequency range from 9Hz horizontal and 10Hz vertical.
■Uses metal springs with a spring constant approximately 1/10th of rubber and gel-based vibration isolation material to give a low resonant frequency.
■Surging, which can become a problem with metal springs, is suppressed using a viscoelastic material.
■Offers 3-axis vibration isolation. The vibrations produced by equipment such as motors are not limited to the vertical direction. The vibrations have horizontal and vertical components.
■Offers high vibration isolation performance in the horizontal direction as well as the vertical direction.
■Loading range indicator is shown on the outer case, it allows you to check the suitability. Vibration isolation mounts provide a vibration isolation effect when used within the allowable loading range. You can check visually whether the load is within the estimated value.

Multiset Plate
■Supports medium loads.
■Able to flexibly handle changes in applied load.
■Supports eccentric loads.

[Included accessories]
Low-profi le hex socket head cap bolt M6X10: 10 pieces

Specifications

Order No.	No.	Main Body Color (Upper Case)	Allowable Load (N)	Constant N/㎜±10％	Usable Frequencies Hz (Horizontal/ Vertical Directions)	Vibration Transmissibility (30Hz or higher)	Recommended Usage Temperature (°C)	Weight (g)	Drawing	Product BOX	CAD	Production	Stock Status
978840	BML03	Gray	2.1～ 4.4	0.29	9.0～/10.0～	Tr=1/20	20～28	20	View	Add	DATA	Stock Item	Stock△
978841	BML05	Yellow	3.5～ 7.3	0.49	9.0～/10.0～	Tr=1/20	20～28	20	View	Add	DATA	Stock Item	Stock〇
978842	BML10	Blue	6.9～14.0	0.98	9.0～/10.0～	Tr=1/20	20～28	20	View	Add	DATA	Stock Item	Stock△
978843	BML25	Red	15.0～30.0	2.06	9.0～/10.0～	Tr=1/20	20～28	20	View	Add	DATA	Stock Item	Contact
978844	BML50	Green	31.0～64.0	4.31	9.0～/10.0～	Tr=1/20	20～28	20	View	Add	DATA	Stock Item	Stock△

Specifi cations Mounting Plate (Special Included Accessory)

Order no.	No.	Material	Included accessories	Drawing	Product BOX	CAD	Production	Stock Status
980208	BML-P	SUS304	Flat head screw M6 × 10	View	Add	DATA	Stock Item	Stock〇

Specifi cations Multiset Plate (Special Included Accessory)

Order no.	No.	Material	Surface Treatment	Included accessories	Drawing	Product BOX	CAD	Production	Stock Status
986013	BML-MSP75A	A5052	Alumite	Low-profi le hex socket head cap bolt M6 × 10 10 pieces	View	Add	DATA	×	Stock〇

Usage

Vibration isolation characteristics depending on load: Vertical direction

※The vibration isolation characteristics diff er depending on the load on the vibration isolation mount.

・If the load is less than the minimum load, the spring does no dteflect and does not produce a vibration isolation effect.
・If the load is greater than the maximum load, the spring cannot deflect any further and does not produce a vibration isolation effect.
In cases like these, replace the vibration isolation mount with one that is suitable for the load.

Selection Method

The vibration isolation eff ect (vibration transmissibility) of the vibration isolation mount is determined by the load tolerance and excitation frequency (vibration frequency) of the target object.
Select the best vibration isolation mount according to the load tolerance per vibration isolation mount and the vibration frequency of
the target object.

(1) Investigate the applied load per vibration isolation mount.
Units (N) Applied load/support locations
(2) Investigate the excitation frequency (Hz) of the vibration isolation target object.
Excitation frequency (Hz) = Equipment rotation speed (rpm)/60 (seconds)
(3) Select the appropriate type from the graph showing the relationship between load and vibration isolation lower limit frequency.
(4) Check the height of the vibration isolation mount according to the specifi cation type and load, and check that the selected mount
can be installed.
Note: All of the given values are calculated values and are not guaranteed values.

Load and Vibration Isolation Lower Limit Frequency Load and Vibration Isolation Mount Height

Vibration Isolation/Vibration Removal Characteristics : Vertical Direction (BML-10)

Example:

(1) When a 5 kg motor is supported at 5 locations, the applied load per vibration isolation mount is 10 N.
(2) Frequency = Vibrations per second
For a 1000 rpm motor, 1000 (rpm)/60 (s)=16.7 (Hz)
(3) From the graph of load and vibration isolation lower limit frequency, usage with 10 N and 16.7 Hz > 10 Hz gives the BML-10.
(4) From the graph of load and vibration isolation mount height, the mount height when installed is 35 mm.
(5) From the graph of vibration isolation/vibration removal characteristics, the expected vibration isolation eff ect is a vibration transmissibility of approx. -18 dB (1/8).