Unreinforced slide elastomeric washer of Ruba NEG type

 

Product description

 

All point washers are designed for applications with greater ranges of the displacement with the pressure up to 5 N/mm2. The perfect selectionof slide materials allows to minimize the friction coefficient while ensuring the proper bearing. Unreinforced elastomer slide washers compensate for horizontal displacements by  freely sliding the slide slab on the washer’s core. At the same time, they ensure controlled load transfer, even out rotation on supports, and reduce unevenness of bearing surfaces.

 

b_E - the width of the unreinforced elastomeric core, mm;

l_E - the length of the unreinforced elastomeric core, mm;

d - the thickness of the unreinforced elastomeric core, mm;

b - he washer/slide slab width, mm;

l - the washer/slide slab length, mm;

t - the washer thickness, mm.

 

The friction coefficient 0.01 do 0.05 at 23 °C. The standard displacement range: ± 20 mm

 

 

The permissible loads and rotation values can be found in the following design table. Other dimensions and displacement ranges are available on request.

 

Specification: bE x lE x d / b x l /t mm RUBA NEG type

 

NEG type unreinforced elastomeric slide washers are produced in the shape of square, rectangular or round plates with or without holes. Possible holes are made: a round hole in the elastomer core, an oval hole in the sliding slab in the direction of sliding.

 

Designation:

t - the washer thickness, mm,

d - the thickness of the unreinforced elastomeric core, mm,

b - the washer width, mm,

l - the washer length, mm,

a₁ - the washer length, mm,

a₂ - the length of the oval hole in the slide slab, mm,

D - the washer diameter, mm.

 

Dimension:

• washer dimension t: 9, 14, 19, 24 mm,
• washer dimension t: 9, 14, 19, 24 mm,
• side dimensions:
  • the min. washer width b: 140 mm,
  • the min. washer width b: 140 mm,
  • the max. dimension: 1000 x 1000 mm.

NEG type washers are manufactured in any sizes. The minimum size of the elastomeric core is 100 x 100 mm

 

 

 

Assortment

Washer dimension		The total heigh h	The heigh of elastomer d	Permissible the load F	the permissible torsion angle		the permissible average load of the washer
The washer core a x b	The standard slide slab				the shorter side	the longer side
mm	mm	mm	mm	kN	‰	‰	N/mm2
100 x 100	140 x 140	9	5	50	10	10	5
		14	10	30	20	20	3
100 x 150	140 x 190	9	5	75	10	7	5
		14	10	54	20	13	3,6
150 x 200	190 x 240	9	5	150	7	5	5
		14	10	150	13	10	5
200 x 200	240 x 240	9	5	200	5	5	5
		14	10	200	10	10	5
		19	15	170	15	15	4,3
200 x 250	240 x 290	9	5	250	5	4	5
		14	10	250	10	8	5
		19	15	222	15	12	4,4
200 x 300	240 x 340	9	5	300	5	3	5
		14	10	300	10	7	5
		19	15	288	15	10	4,8
250 x 300	290 x 340	9	5	375	4	3	5
		14	10	375	8	7	5
		19	15	370	12	10	4,9
200 x 400	240 x 440	9	5	400	5	3	5
		14	10	400	10	5	5
		19	15	400	15	8	5
		24	20	320	20	10	4
250 x 400	290 x 440	9	5	500	4	3	5
		14	10	500	8	5	5
		19	15	500	12	8	5
		24	20	462	16	10	4,6
300 x 400	340 x 440	9	5	600	3	3	5
		14	10	600	7	5	5
		19	15	600	10	8	5
		24	20	600	13	10	5
The standard range of the displacement: +/- 20 mm
Other sizes are availible on request.

 

Fire resistance

NEG washers have fire tests carried out in the Fire Research Laboratory of ITB (Laboratorium Badań Ogniowych ITB).

They have the REI 120 fire resistance class.

When selecting washers, the guidelines contained in the Technical Assessment No. 01155/17/Z00NZP should be taken into account.