56
I Renold Roller Chain Catalogue
Section 1
Polymer Block
Material code and details Code
Material Type
Shore Hardness
Wear Value DIN 53516 mm3
Colour
NR IR SBR BR EPDM NBR CR AU SI FSI FPM PUR PTFE
Natural Rubber Isoprene Rubber (Synth. polyisoprene) Styrene-Butadiene Rubber Butadiene Rubber (Polybutadiene) Ethylene-Propylene-Diene Polymer Acronitrille Butadiene Rubber Chloroprene Rubber (Polychloroprene) Polyester Urethane Rubber Silicone Resins Fluoric Silicone Resins Fluoropolymers Polyurethane Polytetrafluoroethylene
65 + / – 5 75 + / – 5 65 + / – 5 70 + / – 5 75 + / – 5 85 + / – 5 -
160 160 160 160* 160* 80 -
RAL1014 RAL7034 RAL1021 RAL3012 RAL8008 RAL1007 -
Ivory Yellow-Grey Cadmium-Yellow Beige-Red Olive-Brown Chrome-Yellow Transparent -
- Details available on request. * Renold design.
RAL 1007
RAL 1014
A customer specific design, hardness and wear specification of block is possible, but may be subject to minimum order quantities.
RAL 1021
RAL 3012
RAL 7034
RAL 8008
Polymer Block material colour may vary from the represented colours shown above.
Material mechanical values/resistance Type
Material
Tensile Strength Elongation at Fracture Rebond Resilience Wear Resistance Tear Strength Current Flow Resistance Temperature Hot -Air Degrees C Minimum Temperature Degrees C Age Resistance Ozone Resistance Benzine Resistance Oil and Grease Resistance Acid Resistance Alkali Resistance Resistance to Hot Water 1 = Excellent
2 = Very Good
3 = Good
NR
IR
SBR
BR
IIR
EPDM
NBR
CR
AU
SI
FSI
FPM
PUR
PTFE
1 1 2 2 2 1 +90 -50 3 4 6 6 3 3 3
2 1 2 2 3 1 +90 -40 3 4 6 6 3 3 3
5 2 3 2 3 2 +100 -40 3 4 4 5 3 3 2
6 3 1 1 5 2 +100 -60 3 3 5 6 3 3 3
4 2 6 3 4 2 +140 -40 2 2 6 6 2 2 1
5 3 3 3 4 2 +150 -40 1 1 5 4 1 2 2
5 2 3 2 4 4 +130 -40 3 3 1 1 4 3 3
3 2 3 2 3 3 +120 -30 2 2 2 2 2 2 3
2 2 3 1 4 3 +120 -20 2 2 1 1 5 5 5
6 4 3 5 6 1 +200 -80 1 1 5 1 5 5 5
6 4 3 5 6 1 +200 -80 1 1 1 1 4 4 4
5 3 5 4 3 4 +220 -25 1 1 1 1 1 1 2
1 2 2 1 1 2 +80 -35 1 1 2 2 6 6 6
1 3 NA 3 2 1 +260 -190 1 1 1 1 1 1 1
4 = Moderate
When choosing the material for your application, the table above can be used to select the material with the most appropriate properties.
5 = Poor
6 = Insufficient
For example, where an application has oil and grease present, NBR, AU, SI, FSI FPM and PTFE materials are suitable.
Contact our technical staff for more advice on the suitability of the materials shown.