Crowned Diamond Rubber Lagging

Elastotec Crowned Diamond Rubber Lagging is designed to provide improved belt tracking in low to medium tension applications where existing rubber lagging is experiencing problems.

Tapered end pieces (20mm-12mm) with a 0.9 deg angle are vulcanised to a 20mm thick ﬂat central section in a ration of approximately 1/3 – 1/3 – 1/3.

Category:Elastotec Rubber Lagging Tags:Cold Bonded, Hot Vulcanised

Description

Description

Application

Elastotec Crowned Diamond Rubber Lagging is designed for use in medium belt tension applications and can be applied to conveyor drive, tail, snub, bend or take-up pulleys. It is used for conveyor system applications in the mining, quarrying, mineral and metal processing industries but can be used on any conveyor pulley.

Key features and benefits

Improved belt tracking.
Suitable for low and medium belt tension applications.
Available in 250mm wide strips that can be made to suit any pulley size and make it easy to install.
Available in highly abrasion resistant SBR for above ground applications and FRAS for underground and high risk applications.
Coloured wear indicator (Blue for SBR and Red for FRAS).
High quality rubber formulations designed for good bonding, resistance to degradation by out door exposure, and good abrasion resistance.
Buffed CN Bonding layer for increased adhesion for Cold Bonded application.
Available with uncured bonding layer for Hot Vulcanised application.
Tapered ends thickness from 20mm to 12mm. 0.9 degree angle.
Suitable for long term service at temperatures from - 40°C to +70°C.

Design

Crowned lagging strips typically have a 1/3rd ﬂat center section and 1/3rd tapered end sections based on pulley face width.

COLD BONDED

HOT VULCANISED

Rubber specifications

Typical values

	NAT	FRAS
Polymer	SBR	Blend
Tensile strength (MPa) min ISO37	18.0	16.0
% Elongation min ISO37	550%	500%
Hardness (shore A) ISO868	65+/-5	65+/-5
Abrasion resistance max vol. loss ISO 4649 method A (non-rotating)	70mm³	150mm³
FRAS - MDG3608 and MSHA Standards	N/A	PASSED/ACCEPTED
Heat ageing (Property change after 70°C 168hs)	Tensile strength +1% Elongation -15% Hardness 5 points	Tensile strength +5% Elongation -1% Hardness 3 points
Continuous operating temperature	-40/+70°C	-40/+70°C

Lagging specifications – Crowned Diamond Rubber Lagging

COLD BONDED – NAT

PRODUCT	CODE	WIDTH	THICKNESS	LENGTH
Crowned Diamond Rubber Lagging 12mm	ELA-CROWN-RL-DIA-N-20	250mm-252mm	Taper end 0.9 angle	fit to pulley size

COLD BONDED - FRAS

PRODUCT	CODE	WIDTH	THICKNESS	LENGTH
Crowned Diamond Rubber Lagging 12mm	ELA-CROWN-RL-DIA-F-20	250mm-252mm	Taper end 0.9 angle	fit to pulley size

HOT VULCANISED - NAT

PRODUCT	CODE	WIDTH	THICKNESS	LENGTH
Crowned Diamond Rubber Lagging 12mm	ELA-CROWN-RL-DIA-N-20V	251mm-255mm	Taper end 0.9 angle	fit to pulley size

HOT VULCANISED - FRAS

PRODUCT	CODE	WIDTH	THICKNESS	LENGTH
Crowned Diamond Rubber Lagging 12mm	ELA-CROWN-RL-DIA-F-20V	251mm-255mm	Taper end 0.9 angle	fit to pulley size

Thickness variation (all strips/pulley) +/-0.5mm.
Product code for different lengths: Add 5 digits indicating the overall strip length in mm.

Strip length to always be 100mm longer than face width to allow overhang for trimming after application.

Example:
Strip: Crowned Rubber Lagging for pulley face width 1500mm natural rubber, hot vulcanised: ELA-CROWN-RLDIA-N-20V-01600

Thickness variation (all strips/pulley) +/-0.5mm.
Crowned Rubber Diamond Lagging with thickness only recommended for pulleys with diameters over 600mm.

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