nor rubber-elastomeric bearing pads-01 - motec rubber-elastomeric bearing...118 137 85 80 10 52 51...

ELASTOMERIC B EARIN G P AD S

ELASTOMERIC BRIDGE BEARING

San Martiño - A re as s / n 3 6 7 1 1 T u y - P onte v e d ra-SP A I N

T e l : + 3 4 9 8 6 6 0 3 5 1 0 F ax : + 3 4 9 8 6 6 0 3 7 6 4 inf o@ norru b b e r. c om w w w . norru b b e r. c om

San Martiño-A re as s / n 3 6 7 1 1 T u y P onte v e d ra - SP A I N Tel: + 34 986 603510 F a x : + 34 986 6037 64 i n f o @ n o r r u b b e r . c o m w w w . n o r r u b b er . c o m

INTRODUCTION N O R R U B B E R S . A . L . is an endeavouring company dedicated to the manuf acturing of rub b er products: conveyor b el ts, hoses, sol id tyres, f enders, antirust l inings, and a w ide range of moul ded products, as b earing pads and ex pansion j oints.

N or R ub b er’ s f actory is l ocated in the northw est of S pain, very cl ose to the P ortuguese f rontier, nex t to a highw ay, 3 0 k m f ar f rom V igo P ort, and 1 0 0 k m f ar f rom L eix oes P ort ( P orto C ity, P ortugal ) . T he F actory and W ork s ex tend to 3 2 . 0 0 0 m² , 1 4 . 0 0 0 m² of w hich are constructed b uil dings, incl uding 4 b ays and an of f ice b uil ding

O ur manuf acturing system, under control of our l ab staf f , guarantees the q ual ity of every product according to our customer’ s req uirements and the principal standards. W e devel op the rub b er to the product the most ex igent industries demand.

N or R ub b er has a high q ual if ied team, in continuous training, w ith al l technical resources to devel op the products and to proof them w ith every k ind of tests: b reak ing l oad control , accel erated vul caniz ation, ab rasion, chemical attack , etc.

F rom here w e of f er the dif f erent industrial sectors a w ide range of rub b er products, w ith more than 3 . 6 0 0 ref erences. A cross our customers and intermediaries, our products are present in the w hol e w orl d, f rom S outh A merica and E urope up to C hina.

O ver 1 2 5 empl oyees are pitching in at N or R ub b er production site creating.


NOR RUB B E R E L A S TOM E RIC B E A RING P A DS Nor Rubber Elastomeric Bearing Pads and strips are manufactured with CHLOROPRENE (Neoprene®). The compound is accordingly with the international standards. All bearings are calculated through the CEN prEN 1337, and we manufactured according international standards, DIN 4114 or BS 5400 Part 9.

W h y L a m i n a t e d N e o p r e n e E l a s t o m e r i c B r i d g e B e a r i n g s ? All reinforced concrete metallic structures are subject to certain movements such as those caused by temperature changes, wind, traffic, external action or even by their own movement. This causes the need for support elements which absorb or transmit the load trough to the structures foundation.

The Bearings allow the translational and rotation displacements and the absorption of sort duration horizontal loads, as well as vertical loads. They are also holders of high resistance levels to the deterioration caused by the weather conditions.

These pads have no moveable parts and thermal expansion and contraction are absorbed by the pad’s ability to give and take in shear. There is no sliding motion between pad and beam or between pad and abutment.

A d v a n t a g e s o f N e o p r e n e E l a s t o m e r i c B e a r i n g s Elastomeric Bearings are designed and manufactured in order to receive translational and rotation displacements by elastic deformation. They consist of individual layers of rubber with steel plates inserted between them. The steel plates and rubber are vulcanized together giving a bond on their connection faces.

The formulation of the rubber (bases on polychloroprene synthetic rubber) assures a very long life and a very high resistance to oils, solvents, ozone and chemical products contained in the concrete.

Elastomeric Bearings are suitable for application within a range of temperature of -22 F (-30ºC) up to +122 F (50ºC), and until 158 F (70ºC) for short periods.

Also Nor Rubber can provide the bearings with a layer of PTFE and a stainless steel sliding plate.


Elastomeric Bearings - Dimensions table Type 1 : w i t h o u t a n c h o r a g e Type 2 : w i t h a n c h o r a g e

Tipo 1 Tipo 2 Tipo 1 Tipo 2 Tipo 1 Tipo 2

a x b, ∅ P nt

mm Tn mm mm n mm mm rad rad rad rad100 x 100 10 14 - 10 - 1 1 7 - 0,004 0,003 0,005

100 x 150 15 21 42 15 10 2 11 7 0,008 0,006 0,010

28 49 20 15 3 14 11 0,012 0,009 0,015

35 56 25 20 4 16 14 0,016 0,012 0,020

42 63 30 25 5 18 16 0,020 0,015 0,025

70 - 30 6 - 18 0,024 0,018 0,030

150 x 200 3 0 14 - 10 - 1 1 7 - 0,003 0,003 0,004

21 42 15 10 2 11 7 0,006 0,006 0,008

28 49 20 15 3 14 11 0,009 0,009 0,013

35 56 25 20 4 17 14 0,012 0,012 0,017

42 63 30 25 5 21 17 0,015 0,015 0,021

49 70 35 30 6 2 21 0,018 0,018 0,025

56 77 40 35 7 25 2 0,021 0,021 0,029

63 84 45 40 8 27 25 0,024 0,024 0,033

91 - 45 9 - 27 0,027 0,027 0,037

∅ 200 3 9 19 - 13 - 1 1 9 - 0,003 0,003 0,004 0,004

200 x 250 6 3 30 49 21 16 2 15 11 0,006 0,005 0,008 0,008

200 x 300 7 5 41 60 29 24 3 20 17 0,009 0,008 0,012 0,012

52 71 37 32 4 26 22 0,012 0,010 0,016 0,016

63 82 45 40 5 30 28 0,015 0,013 0,020 0,020

74 93 53 48 6 34 32 0,018 0,015 0,024 0,024

85 104 61 56 7 36 35 0,021 0,018 0,028 0,028

200 x 400 100 19 - 13 - 1 1 9 - 0,003 0,001 0,003

30 49 21 16 2 15 11 0,006 0,002 0,006

41 60 29 24 3 20 17 0,009 0,003 0,009

52 71 37 32 4 26 22 0,012 0,005 0,012

63 82 45 40 5 30 28 0,015 0,006 0,015

74 93 53 48 6 34 32 0,018 0,008 0,018

85 104 61 56 7 36 35 0,021 0,009 0,021

Dimensions

Bea

ring

C

apac

ity

(Ver

tical

Lo

ad) Total Height Total Rubber

Thickness

Num

ber

of

inte

rnal

ru

bber

laye

rs

N o

f an

chor

age

rods

Allowable shear displacement Allowable rotation angle over

h hg d


Elastomeric Bearings - Dimensions table


a x b, ∅ P nt

mm Tn mm mm n mm mm rad rad rad rad∅ 250 61 19 - 13 - 1 2 9 - 0,003 0,001 0,003 0,004

250 x400 12 5 30 49 21 16 2 15 11 0,005 0,002 0,005 0,008

41 60 29 24 3 20 17 0,008 0,004 0,008 0,012

52 71 37 32 4 26 22 0,010 0,005 0,010 0,016

63 82 45 40 5 32 28 0,013 0,006 0,013 0,020

74 93 53 48 6 37 34 0,015 0,007 0,015 0,024

85 104 61 56 7 40 38 0,018 0,009 0,018 0,028

96 115 69 64 8 43 41 0,020 0,010 0,020 0,032

126 - 72 9 - 44 0,023 0,011 0,023 0,036

∅ 300 10 6 19 - 13 - 1 2 9 - 0,002 0,001 0,002 0,003

300 x 400 18 0 30 49 21 16 2 15 11 0,004 0,002 0,004 0,006

41 60 29 24 3 20 17 0,006 0,004 0,007 0,009

52 71 37 32 4 26 22 0,008 0,005 0,009 0,012

63 82 45 40 5 32 28 0,010 0,006 0,011 0,015

74 93 53 48 6 37 34 0,012 0,007 0,013 0,018

85 104 61 56 7 43 39 0,014 0,008 0,015 0,021

96 115 69 64 8 46 44 0,016 0,010 0,018 0,024

107 126 77 72 9 50 48 0,018 0,011 0,020 0,027

118 137 85 80 10 52 51 0,020 0,012 0,022 0,030

148 - 88 11 - 53 0,020 0,013 0,024 0,033

∅ 350 14 4 24 - 16 - 1 2 11 - 0,004

39 56 27 22 2 19 15 0,008

54 71 38 33 3 27 23 0,012

69 86 49 44 4 34 31 0,016

84 101 60 55 5 42 39 0,020

99 116 71 66 6 50 46 0,024

114 131 82 77 7 55 52 0,028

129 146 93 88 8 59 57 0,032

144 161 104 99 9 63 61 0,036

350 x 450 2 3 6 24 - 16 - 1 4 11 - 0,003 0,002 0,003

39 66 27 22 2 19 15 0,005 0,004 0,006

54 81 38 33 3 27 23 0,008 0,006 0,01

69 96 49 44 4 34 31 0,01 0,008 0,013

84 111 60 55 5 42 39 0,013 0,01 0,016

99 126 71 66 6 50 46 0,015 0,012 0,019

114 141 82 77 7 55 52 0,018 0,014 0,022

129 156 93 88 8 59 57 0,02 0,016 0,026

144 171 104 99 9 63 61 0,023 0,018 0,029

Dimensions

Bear

ing

Capa

city

(Ver

tical

Total Height Allowable rotation angle over

h hg d

Allowable shear displacement

Total Rubber Thickness

Num

ber

of

inte

rnal

rub

ber

laye

rs

N o

f anc

hora

ge

rods



a x b, ∅ P nt

mm Tn mm mm n mm mm rad rad rad rad∅ 400 189 24 - 16 - 1 11 - 0,002 0,002 0,002 0,003

400 x 500 3 0 0 39 66 27 22 2 19 15 0,004 0,003 0,005 0,006

54 81 38 33 3 27 23 0,006 0,005 0,008 0,009

69 96 49 44 4 34 31 0,008 0,006 0,010 0,012

84 111 60 55 5 42 39 0,010 0,008 0,013 0,015

99 126 71 66 6 50 46 0,012 0,009 0,015 0,018

114 141 82 77 7 57 54 0,014 0,011 0,018 0,021

129 156 93 88 8 62 60 0,016 0,012 0,018 0,024

144 171 104 99 9 66 65 0,018 0,014 0,020 0,027

159 186 115 110 10 70 69 0,020 0,005 0,022 0,030

- 201 - 121 11 - 72 0,022 0,017 0,024 0,033

∅ 450 2 3 9 24 - 16 - 1 4 11 - 0,002 0,001 0,002 0,003

450 x 600 4 0 5 39 66 27 46 2 19 15 0,004 0,002 0,004 0,006

54 81 38 61 3 27 23 0,006 0,004 0,007 0,009

69 96 49 76 4 34 31 0,008 0,005 0,009 0,012

84 111 60 91 5 42 39 0,010 0,006 0,011 0,015

99 126 71 106 6 50 46 0,012 0,007 0,013 0,018

114 141 82 121 7 57 54 0,014 0,008 0,015 0,021

129 156 93 136 8 65 62 0,016 0,010 0,018 0,024

144 171 104 151 9 70 67 0,018 0,011 0,020 0,027

159 186 115 166 10 74 72 0,020 0,012 0,022 0,030

174 201 126 181 11 78 76 0,022 0,013 0,024 0,033

- 216 - 196 12 - 80 0,024 0,014 0,026 0,036

∅ 500 2 95 24 - 16 - 1 4 11 - 0,002 0,001 0,002 0,002

∅ 550 3 5 6 39 66 27 22 2 19 15 0,004 0,002 0,004 0,004

500 x 600 4 5 0 54 81 38 33 3 27 23 0,006 0,004 0,007 0,006

69 96 49 44 4 34 31 0,008 0,005 0,009 0,008

84 111 60 55 5 42 39 0,010 0,006 0,011 0,010

99 126 71 66 6 50 46 0,012 0,007 0,013 0,012

114 141 82 77 7 57 54 0,014 0,008 0,015 0,014

129 156 93 88 8 65 62 0,016 0,010 0,018 0,016

144 171 104 99 9 73 69 0,018 0,011 0,020 0,018

159 186 115 110 10 77 75 0,020 0,012 0,022 0,020

174 201 126 121 11 81 80 0,022 0,013 0,024 0,022

189 216 137 132 12 86 84 0,024 0,014 0,024 0,024

204 231 148 143 13 89 88 0,026 0,016 0,026 0,026

∅ 600 4 2 4 30 - 20 - 1 6 14 - 0,002 0,002 0,003 0,002

∅ 650 4 98 50 75 35 30 2 25 21 0,004 0,003 0,005 0,004

600 x 700 6 3 0 70 95 50 45 3 35 32 0,006 0,005 0,008 0,006

90 115 65 60 4 46 42 0,008 0,006 0,010 0,008

110 135 80 75 5 56 53 0,010 0,008 0,013 0,010

130 155 95 90 6 67 63 0,012 0,009 0,015 0,012

150 175 110 105 7 77 74 0,014 0,011 0,018 0,014

170 195 125 120 8 88 84 0,016 0,012 0,020 0,016

190 215 140 135 9 93 91 0,018 0,014 0,023 0,018

210 235 155 150 10 100 98 0,020 0,015 0,025 0,020

230 255 170 165 11 105 103 0,022 0,017 0,028 0,022

- 275 - 180 12 - 108 0,024 0,018 0,030 0,024

h hg d

Allowable shear displacement Allowable rotation angle overTotal Rubber

Thickness

Num

ber

of

inte

rnal

ru

bbe

r la

yers

N o

f an

chor

age

rod

s

DimensionsB

eari

ng

Cap

acity

(V

ertic

al

Load

) Total Height



a x b, ∅ P nt

mm Tn mm mm n mm mm rad rad rad rad∅ 700 570 30 - 20 - 1 6 14 - 0,002 0,001 0,002 0,002

∅ 750 6 6 3 50 75 35 30 2 25 21 0,004 0,002 0,005 0,004

700 x 800 8 4 0 70 95 50 45 3 35 32 0,006 0,004 0,007 0,006

90 115 65 60 4 46 42 0,008 0,005 0,009 0,008

110 135 80 75 5 56 53 0,010 0,006 0,001 0,010

130 155 95 90 6 67 63 0,012 0,007 0,001 0,012

150 175 110 105 7 77 74 0,014 0,008 0,015 0,014

170 195 125 120 8 88 84 0,016 0,010 0,018 0,016

190 215 140 135 9 98 95 0,018 0,011 0,021 0,018

210 235 155 150 10 105 103 0,020 0,012 0,023 0,020

230 255 170 165 11 112 110 0,022 0,013 0,025 0,022

250 275 185 180 12 118 116 0,024 0,014 0,028 0,024

270 295 200 195 13 123 121 0,026 0,016 0,030 0,026

- 315 - 210 14 - 126 0,028 0,017 0,032 0,028

∅ 800 754 33 - 23 - 1 6 16 - 0,002 0,002 0,003 0,002

∅ 850 8 51 56 81 41 36 2 29 25 0,004 0,004 0,006 0,004

800 x 800 9 6 0 79 104 59 54 3 41 38 0,006 0,006 0,008 0,006

102 127 77 72 4 54 50 0,008 0,008 0,011 0,008

125 150 95 90 5 67 63 0,010 0,010 0,014 0,010

148 173 113 108 6 79 76 0,012 0,012 0,017 0,012

171 196 131 126 7 92 88 0,014 0,014 0,020 0,014

194 219 149 144 8 104 101 0,016 0,016 0,022 0,016

217 242 167 162 9 115 113 0,018 0,018 0,025 0,018

240 265 185 180 10 124 122 0,020 0,020 0,028 0,020

263 288 203 198 11 131 129 0,022 0,022 0,031 0,022

286 311 221 216 12 138 136 0,024 0,024 0,034 0,024

309 334 239 234 13 144 142 0,026 0,026 0,036 0,026

∅ 900 9 54 33 - 23 - 1 6 16 - 0,002 0,002 0,002 0,002

900 x 900 1 2 1 5 56 81 41 36 2 29 25 0,003 0,003 0,004 0,003

79 104 59 54 3 41 38 0,005 0,005 0,006 0,005

102 127 77 72 4 54 50 0,006 0,006 0,008 0,006

125 150 95 90 5 67 63 0,008 0,008 0,011 0,008

148 173 113 108 6 79 76 0,009 0,009 0,013 0,009

171 196 131 126 7 92 88 0,011 0,011 0,015 0,011

194 219 149 144 8 104 101 0,012 0,012 0,017 0,012

217 242 167 162 9 117 113 0,014 0,014 0,019 0,014

240 265 185 180 10 128 126 0,015 0,015 0,021 0,015

263 288 203 198 11 137 135 0,017 0,017 0,023 0,017

286 311 221 216 12 145 143 0,018 0,018 0,035 0,018

309 334 239 234 13 152 150 0,020 0,020 0,027 0,020

332 357 257 252 14 158 156 0,021 0,021 0,029 0,021

- 380 - 270 15 - 162 0,023 0,023 0,032 0,023

h hg d

Allowable shear displacement Allowable rotation angle over

Total Rubber Thickness

Nu

mb

er o

f in

tern

al

rubb

er la

yers

N o

f an

cho

rage

ro

ds

DimensionsB

eari

ng

Cap

acity

(V

ertic

al

Load

) Total Height

Nor Rubber can manufacture up to 1 2 0 0 x 1 2 0 0 mm. T ech ni cal mod i fi cati ons res erv ed

San Martiño-A re as s / n 3 6 7 1 1 T u y Ponte v e d ra - SPA I N Tel: + 34 986 603510 F a x : + 34 986 6037 64 i n f o @ n o r r u b b e r . c o m w w w . n o r r u b b er . c o m

TECHNICAL CHARACTERISTICS

The low rubber deformity module, both at compressions effects at tangential efforts, make the rubber as the better material to manufacture bearing pads which requires big loads and small turns and movements.

They should operate correctly under normal weather conditions, as long as their maintenance is respected during their useful life. Additional precautions should be taken if they are operating under specific weather conditions.

VERTICAL LOADS In the following tables is showed the maximum working loads. At these loads it could be expected a deflection of up to 15% of the original height. The holes or cuts could have an important effect by reducing the load capacity and increasing the deflection. The compression load should not be higher than 100-150 Kg/cm2.

SHEAR DEFLECTION The allowable shear deflection is about 30-50% of the compressed bearing pad thickness. Shear deflection of up to 65% may be considered, but careful consideration should be also considered, or with other systems, such as Sliding Bearings (with a layer of Teflon, PTFE). Bearings should not be used under constant and heavy shear forces, although they are designed to support shear displacements. The minimum vertical load to avoid sliding in the structure should not less than 30 Kg/cm2; If not, an anchored bearing should be used.

ROTATION When big turn occurs, important height will be required, but the total effective height of the rubber should be lower than 1/5 of the smaller horizontal dimension. Under certain conditions this limit can be 1/3,33. It is important that no gap occurs between the structure and the bearing pad. The rotational capacity is included in the tables.

INSTALLATION The mating surfaces should be flat, parallel and free from cavities or protrusions. A professional installation is needed for optimum use and service life. It is preferable for the structures surfaces to have rough texture without lubrication, oils and hydrocarbons. A gap (minimum of 12mm) around all slides of the pad must be provided.

NOR RUBBER – C a t a l o g u e El a s t o m er i c Bea r i n g P a d s


TECHNICAL DRAWINGS

LAMINATED BEARING PADS (Rectangular & Round)

It is the most common due to bigger tolerance during their installation. The bearings are fully covered with elastomer. It could have holes. Usually the plates are all with the same dimensions and equidistant. They allow translational displacements in any direction, and rotation displacements, on any axis, by elastic deformation, in a way they may convey the projected forces from one structural component to another.

Cross section exampl e:

BEARING PADS WITH METALLIC WEDGE (Rectangular & Round)

The plate placed in the higher position is replaced by a metallic wedge. This allows the bearing to get adapted to not parallel surfaces, as longitudinal slope. When installation takes place, bearing position should be that metallic wedge is placed in the higher side of the bearing. Not advised with slopes over 5%.




EMBOSSED (GOFFER) BEARING PADS (Rectangular & Round) One way to anchor is with profiled outer steel plates. In these cases movements are not transmitted. Goffer bearings are mainly used for static loads.


ANCHORED BEARING PADS (Rectangular & Round) In case the compression minimum load is under 20 kg/cm2 for bearings with less than 400cm2 or under 30 kg/cm2 and over 1200cm2, the bearing should be anchored to the structure to avoid its movement. This type is special useful where traction and high horizontal forces are to be transmitted. It can transmit small movements (about 10% of the total admissible compression) when the anchor is made with welding or screwed bolts. Anchored bearing should be designed considering the possibility to be removed and replaced.

Cross section exampl e :



SLIDING BEARING PADS (Rectangular & Round) There is the facility to allow for larger movements by adding a sliding system: a PTFE sliding bearing (slim PTFE layer bonded to a laminated bearing pad) in combination with Stainless Steel mirror finished surface.




RU B B ER SP ECIF ICATIO NS We manufacture with the following TYPICAL RUBBER SPECIFICATIONS:

CH A R A CT E R I S T I CS U N I T S N O R M / T E S T M E T H O D VALUE

Transversal Elastic Modulus, G MP a kg / c m 2

U N E 5 36 30 ; B S 9 0 3. A 14 ; A S T M D 4 0 14 ; I S O 18 2 7

1± 15 % 10 ± 15 %

Tensile streng h t MP a

kg / c m 2 U N E 5 35 10 ; I S O 37 ; A S T M D 4 12 D i e C ;

D I N 5 35 0 4 ; B S 9 0 3. A 2 ≥ 16 ≥17 0

Minim um Elong ation at B reak % I S O 37 ; U N E 5 35 10 ; A S T M D 4 12 D i e C ;

D I N 5 35 0 4 ; B S 9 0 3. A 2 ≥4 5 0

H ardness S h o r e A U N E E N I S O 8 6 8 : 2 0 0 3; A S T M D 2 2 4 0 ; D I N 5 35 0 5 ;

B S 9 0 3. A 19 6 0 ± 3

R em aining distortion % I S O 8 15 U N E 5 3-5 11 ≤ 35

Minim um Tear R esistance kN / m I S O 34 ≥ 10

A dh esion R ub b er-S teel N / m m B S 9 0 3. A 2 1; I S O 8 13 ≥ 7

A CCE L E R A T E D A G E I N G - M a x i m u n c h a n g e f r o m u n a g e d v a l u e ( 7 0 h . @ 1 0 0 º C)

H ardness U d s . I S O 18 8 ± 5 Tensile streng h t % I S O 18 8 ± 15

Elong ation at B reak % I S O 18 8 ± 2 5

O z one R esistance V i s u a l I S O 14 31 N o C r a c ks

Th e o f f i c i a l c e r t i f i c a t e w i l l b e i s s u e d w i t h e a c h o r d e r Te c h n i c a l m o d i f i c a t i o n s r e s e r v e d

S T E E L , A CCO R D I N G N O R M U N E 7 2 6 2 & 7 2 7 7 T Y P E T h i c k n e s s E l a s t i c l i m i t ≥ B r e a k i n g s t r e n g h t ≥

e < 3 2 . 2 0 0 K p / c m ² S T E E L e > 3 2 . 4 0 0 K p / c m ² 3. 6 0 0 K p / c m ²

e < 3 2 . 8 0 0 K p / c m ² S T A I N L E S S S T E E L e > 3 2 . 5 0 0 K p / c m ² 4 . 4 0 0 K p / c m ²



Nor Rubber S.A.L.

Rigorous quality control

A ll m anuf acturing p roce sse s at N or Rub b e r are strictly controlle d und e r th e ausp ice s of I S O

9 0 0 1 : 2 0 0 0 , e nsuring th e h igh e st quality and m anuf acturing e f f icie ncy in our all

p rod ucts

N or Rub b e r p rov id e s w ith e lastom e ric

b e aring p ad s th e m ost im p ortant construction com p anie s in S p ain and e x p orts h is p rod ucts to

th e w h ole w orld

nor rubber-elastomeric bearing pads-01 - motec rubber-elastomeric bearing...118 137 85 80 10 52 51...

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