Rubber Shock Absorber KRB

High buffer

Performance/Features
Specifications/standards
Precautions for installation

RoHS

Collision buffer boasting high energy absorption capacity: It has a structure in which cushioning pads are stacked inside a cylindrical casing, and the piston presses the rubber to absorb the impact energy.

Performance/Features

High energy absorption capacity

The special synthetic rubber and ideal rubber shape show high energy absorption capacity.

Wide operating temperature range

Maintains excellent buffering performance in the temperature range from -30°C to 80°C.

Excellent durability and maintenance free

Since the cushioning pad is sealed inside the casing, it prevents the intrusion of foreign substances such as sunlight, ozone, and gravel that cause deterioration of the rubber, and improves durability.
*Maintenance such as oil and grease up is not required.

Specifications/Standards

Dimensions

Specification table

Product number	D. mm	A. mm	P. mm	t mm	d1_ mm	Attached bolt d-ℓ	H. mm	Energy absorption capacity kJ {kgf-m}	Maximum stroke mm	Maximum impact force kN {tonf}	Product mass kg
KRB-100A-2	65	160	125	9	18	M16-50	120	1.6 { 160 }	20.6	235 { 24 }	9
KRB-100A-3							159	2.4 {240}	30.9		10
KRB-100A-4							198	3.1 {320}	41.2		11
KRB-100A-5							237	3.9{400}	51.5		12
KRB-125A-3	120	200	160	9	22	M20-60	198	4.1 {420}	32.4	373 { 38 }	16
KRB-125A-4							238	5.5 {560}	43.2		17
KRB-125A-5							278	6.9 {700}	54		18
KRB-125A-6							318	8.2 { 840 }	64.8		19
KRB-125A-7							358	9.6 { 980 }	75.6		21
KRB-150A-3	160	250	200	16	22	M20-60	305	8.5 {870}	52.5	490 { 50 }	32
KRB-150A-4							365	11.4 { 1160 }	70		35
KRB-150A-5							427	14.2 { 1450 }	87.5		38
KRB-150A-6							488	17.1 { 1740 }	105		41
KRB-150A-7							548	19.9 {2030}	122.5		43
KRB-200A-3	200	315	250	16	26	M24-70	377	16.2 { 1650 }	60	706 { 72 }	58
KRB-200A-4							449	21.6 {2200}	80		64
KRB-200A-5							523	27.0 {2750}	100		70
KRB-200A-6							595	32.4 {3300}	120		75
KRB-200A-7							669	37.8 {3850}	140		81
KRB-200A-8		400	315	22			747	43.1 {4400}	160		104
KRB-200A-9							821	48.5 { 4950 }	180		110
KRB-200A-10							893	53.9 {5500}	200		115
KRB-250A-4	250	400	315	22	26	M24-80	490	33.3 {3400}	88	980 { 100 }	114
KRB-250A-5							570	41.7 { 4250 }	110		126
KRB-250A-6							651	50.0 { 5100 }	132		133
KRB-250A-7							731	58.3 {5950}	154		142
KRB-250A-8							812	66.7 { 6800 }	176		151
KRB-250A-9							892	75.0 { 7650 }	198		160
KRB-250A-10							973	83.4 {8500}	220		169
KRB-300A-4	300	500	400	25	32	M30-90	545	53.0 { 5400 }	96	1520 { 155 }	198
KRB-300A-5							631	66.2 {6750}	120		212
KRB-300A-6							717	79.4 {8100}	144		227
KRB-300A-7							804	92.7 { 9450 }	168		241
KRB-300A-8							890	106 { 10800 }	192		256
KRB-300A-9							977	119 { 12150 }	216		270
KRB-300A-10		600	500				1063	132 { 13500 }	240		285
KRB-300A-12							1246	159 { 16200 }	288		347
KRB-300A-14							1419	185 { 18900 }	336		376
KRB-300A-16							1591	212 { 21600 }	384		405
KRB-300A-18							1764	238 { 24300 }	432		433

*The shape of the base plate can be changed as a special order. Please consult with us separately if you wish to do so.
(Please note that when changing the plate thickness, the height (H) will also change.)
*Painting: Polyurethane resin paint, standard color: Munsell 7.5YR7/14
(For custom colors, please specify the color sample number of the Japan Paint Manufacturers Association.)

Precautions for installation

(1) Install so that the impact is received vertically on the plane of the piston head.
(2) Install on a flat mounting plate with high rigidity.
(3) Use the supplied bolts for mounting.

About maintenance and inspection

(1) In order to know that Shock Absorber are working properly, check if there is any abnormal noise from Shock Absorber or the building at the time of collision.
(2) If you find any abnormal noise or deformation of the shock Shock Absorber due to impact, replace it immediately.

Precautions when selecting

(1) If the collision frequency is high (more than 10 times a day), select the maximum stroke as about half of the standard table.
(2) When mounting on both sides, use the same D dimension in the standard table, and make sure that the total number of buffer pads does not exceed the standard value.
　 Also, do not place it facing the KUB type.

Product information