Classification and Representation Methods of Llead Core Elastomeric Bearing Pads Bridge Rubber Pedestal

• Customization: Available
• After-sales Service: Yes
• Warranty: 2, Supply
• Model NO.: LRB
• Part: Dampers
• Position: Customized Design
• Type: Customized Design
• Spring Type: Customized Design
• Spring Material: Customized Design
• Structure: Customized Design, Bridge Rubber Pedestal
• Car Make: Customized Design
• Brand: Customized Design
• Damping Force Direction: Customized Design
• Certification: DIN
• Usage: Beam Bridge, Highway Bridge, Railroad Bridge
• Material: Rubber Bearing
• Activity: Multi Direction Movable Bearing
• After-Sales Service: Supply
• Transport Package: in Bulk
• Specification: Custom based on your requirement
• Trademark: Huagong
• Origin: China
• Production Capacity: 1000000kg/Year

Product Description

Product Description

classification and representation methods of  elastomeric bearing pads :

(1) Classification as shapes of bridge bearings 
    a.Rectangular bridge elastomeric bearings
    b.Circular bridge elastomeric bearings

 (2) Classification as applicable temperature of adhesive varieties of bridge bearings
     a.Neoprene bearing(applicable temperature -25~60°C)
     b.NR bearing (applicable temperature -35~60°C)
     c.EPDM bearing (applicable temperature -40~60°C )

 (3) Classification as structure style of neoprene bearing
     a.General plate type neoprener bearing
     b.Tetrafluoro sliding plate type neoprene bearing.

elastomeric bearing can be set between steel plates to avoid direct contact to the structure,
The bearing steel plates can be additionally anchored to the concrete /steel structure by studs /bolts.
 

Material

elastomer
The elastomeric used in the manufacturing of lead rubber bearing should be specified in the project documentation as either natural rubber (NR) or chloroprene rubber (CR) as the raw polymer.
Physical and mechanical propertied of elastomer

Characteristics	Requirements			Test Methods
G Modulus (MPa)	0.7	0.9a	1.15	ISO	Equivalent national standard
Tensile Strength (MPa) Molded Test Piece Test Piece from Bearing Minimum elongation at break(%) Molded Test Piece Test Piece from Bearing	≥16 ≥14 450 400	≥16 ≥14 425 375	≥16 ≥14 300 250	ISO 37 type2	GB/T 528-1998(Type 2)
Minimum Tear Resistance(KN/m) CR NR	≥7 ≥5	≥10 ≥8	≥12 ≥10	ISO 34-1 Trouser (Method A)	GB/T 529-1999 (Pants type)
Compression Set(%) 24h; 72ºC	CR ≤15 NR≤30			ISO 815 φ29×12.5mm, Spacer: 9.38mm,-25%	GB/T7759-1996
Accelerated Ageing (Maximum change from unaged value) -Hardness(IRHD) NR 7 d , 70ºC CR 3 d, 100ºC -Tensile strength(%) NR 7 d , 70ºC CR 3 d, 100ºC -Elongation at break(%) NR 7d , 70ºC CR 3d, 100ºC	-5+10 ±5 ±15 ±15 ±25 ±25			ISO 48 ISO 188	GB/T 6031-1998 GB/T 3512-2001
Ozone Resistance Elongation: 30% - 96h 40ºC±2ºC NR 25pphm CR 100pphm	No cracks			ISO 1431-1	GB/T 7762-2003

Product Description
Bridge basin type neoprene rubber bearings for bridges
a. Transmit the vertical loads due to permanent andaccidental effects; it is possible to cover a wide range of loads about up to 22000 kN b. Transmit the horizontal loads with or without elastic response c. Allow rotation as per a spherical hinge d. Capacity of horizontal displacement e. Suitable for all structures steel and concrete bridges and buildings f. High durability and no maintenance.

Technical Index		Natural Rubber (-40ºC-60 ºC)	Neoprene Rubber(-25ºC-60ºC)
Hardness(IRHD)		60±5	60±5
Tensile Strength(MPa)		≥18	≥17
Elongation at Break(%)		≥450	≥400
Brittleness Temperature(ºC)		≤ -50	≤ -40
Compression Set(70ºC×24h)(%)		≤ 30	≤ 15
Ozone Aging Resistance(20% strain,40ºC × 96h)		25 pphm	100 pphm
		No Cracks	No Cracks
Hot Air Aging	Test Condition(ºC × h)	70 × 168	100 × 70
	Max Change in Tensile Strength(%)	- 15	-15
	Max Change in Elongation at Break(%)	- 20	-40
	Max Change in Hardness(IRHD)	-5 , +10	0 , +10
Bond Strength Between Elastomer and Steel Plate(KN/m)		>10	>10
Bond Strength Between Elastomer and PTFE(KN/m)		>7	>7

Physical Properties

Technical Index		Natural Rubber (-40ºC-60 ºC)	Neoprene Rubber(-25ºC-60ºC)
Hardness(IRHD)		60±5	60±5
Tensile Strength(MPa)		≥18	≥17
Elongation at Break(%)		≥450	≥400
Brittleness Temperature(ºC)		≤ -50	≤ -40
Compression Set(70ºC×24h)(%)		≤ 30	≤ 15
Ozone Aging Resistance(20% strain,40ºC × 96h)		25 pphm	100 pphm
		No Cracks	No Cracks
Hot Air Aging	Test Condition(ºC × h)	70 × 168	100 × 70
	Max Change in Tensile Strength(%)	- 15	-15
	Max Change in Elongation at Break(%)	- 20	-40
	Max Change in Hardness(IRHD)	-5 , +10	0 , +10
Bond Strength Between Elastomer and Steel Plate(KN/m)		>10	>10
Bond Strength Between Elastomer and PTFE(KN/m)		>7	>7

 

Packaging & Shipping

Packing:25kgs each plastics composite sack.

Company Profile

Our Advantages

FAQ

Q1. Can you provide OEM & ODM service?
A:  Yes.

Q2. What's your Trading Term ,Payment Term?
A: 1)EXW,FOB, CFR or CIF.
   2)T/T or L/C at sight by production order,accept Western Union or Paypal for sample freight.

Q3. Is the samples free?
A: Sample is Free, but the freight will refund you when your big order.

Q4. What's your MOQ?
A: 1 PC is available to our company,but the freight cost for unit price will be very high.

Q5. Can we print our own logo or brand on the products?
A: Welcome, you can send your own design of LOGO, we can make new mold and print or label any LOGO for you.

Q6. What's your nearby sea port?
A: Shanghai or Ningbo port in China.

Q7. What's carrier in your plastic industry?
A: PE,PP,PBT,PET,PA,PS,PC,PVC,ABS,EVA,TPE,TPU,TPR,TPV,PLA etc.

Q8. What's material of your rubber?
A: HNBR,NBR,NR,FKM,EPDM,SIR,PU,ACM,FVMQ,SBR,CR,IIR and so on.