Anti-vibration rubber KI/RI

Anti-vibration rubber

Performance/Features
Specifications/standards
Main use

RoHS

It has high impact mitigation properties, softens the area in the event of a collision, and prevents the generation of noise.: The KI and RI stoppers utilize the large deformation characteristics of elastic bodies to provide high shock mitigation properties, soften the area during collisions, and prevent the generation of noise.

Performance/Features

1. Effective in mitigating large impact forces

The contact is soft, and the spring constant increases with the deflection value, making it possible to smoothly absorb and mitigate large impact forces.

2. Prevention of noise generation

Withstands large load deformation and almost no wear. It also makes no noise when touched.

3. High damping performance

Two types of rubber materials can be selected for model RI: natural rubber and high-damping rubber. High damping rubber HD type provides high damping performance, absorbs vibration and collision energy, and exhibits superior anti-vibration and cushioning performance.

4. Easy to install

Installation is very easy and maintenance free.

Specifications/Standards

KI-type

Part number	Standard dimensions mm							Maximum deflection mm	Maximum absorbed energy J {kgf-m}	Maximum impact force kN {tonf}
Part number	A.	D.	H.	t	l	s	d	Maximum deflection mm	Maximum absorbed energy J {kgf-m}	Maximum impact force kN {tonf}
KI-30	30	25	30	2.3	24	20	M8	14	18 { 1.8 }	4.9 {0.5}
KI-40	40	35	35	2.3	30	25	M8	17	44 { 4.5 }	10.8 { 1.1 }
KI-50	50	40	40	3.2	30	25	M10	19	64 { 6.5 }	13.2 { 1.35 }
KI-60	60	50	50	3.2	35	35	M12	24	140 { 14 }	22.6 { 2.3 }
KI-80	80	65	65	4.5	45	45	M12	30	290 { 30 }	34.3 { 3.5 }
KI-100	100	80	85	4.5	55	55	M16	40	590 { 60 }	49.0 {5.0}

*One hexagonal nut and one spring washer are included.
*Rubber material shall be natural rubber compound hardness 65.

RI-type

If you want high damping performance or absorb high energy of vibration or collision, please choose high damping HD type.

High attenuation type

Part number	Standard dimensions mm						Maximum deflection mm	Maximum absorbed energy J {kgf-m}	Maximum impact force kN {tonf}
Part number	D.	H.	R.	l	s	d	Maximum deflection mm	Maximum absorbed energy J {kgf-m}	Maximum impact force kN {tonf}
RI-25HD	25	25	10	18	16	M6	11	8.8 { 0.9 }	2.7 {0.28}
RI-30HD	30	31	14	24	20	M8	14	19 { 1.9 }	3.7 {0.38}
RI-45HD	45	36	40	29	25	M8	16	60 { 6.1 }	11.8 { 1.20 }
RI-65HD	65	45	50	35	35	M12	21	190 { 19 }	32.4 {3.30}

*One hexagonal nut and one spring washer are included.
*The rubber material is a special synthetic rubber compound with a high damping hardness of 60.

Natural rubber type

Part number	Standard dimensions mm						Maximum deflection mm	Maximum absorbed energy J {kgf-m}	Maximum impact force kN {tonf}
Part number	D.	H.	R.	l	s	d	Maximum deflection mm	Maximum absorbed energy J {kgf-m}	Maximum impact force kN {tonf}
RI-25	25	25	10	18	16	M6	11	6.9 { 0.7 }	2.2 { 0.22 }
RI-30	30	31	14	24	20	M8	14	15 { 1.5 }	3.4 {0.35}
RI-45	45	36	40	29	25	M8	16	53 { 5.4 }	12.3 { 1.25 }
RI-65	65	45	50	35	35	M12	21	160 { 16 }	29.8 {3.04}

*One hexagonal nut and one spring washer are included.
*Rubber material shall be natural rubber compound hardness 60.

Selection chart

Main use

・Stoppers for trolleys, doors, etc.

Product information