Data Sheet

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Technical Data Sheet

LOCTITE

648™ (OLD)

(TDS for old formulation of LOCTITE

648™ (OLD)) October-2005

PRODUCT DESCRIPTION

LOCTITE

648™ (OLD) provides the following product

characteristics:

Technology Acrylic

Chemical Type Urethane methacrylate

Appearance (uncured) Green liquid

LMS

Fluorescence Positive under UV light

LMS

Components One component -

requires no mixing

Viscosity Low

Cure Anaerobic

Secondary Cure Activator

Application Retaining

Strength High

This Technical Data Sheet is valid for LOCTITE

648™

(OLD) manufactured prior to the dates outlined in the

"Manufacturing Date Reference" section.

LOCTITE

648™ (OLD) is designed for the bonding

of cylindrical fitting parts. The product cures when confined in

the absence of air between close fitting metal surfaces and

prevents loosening and leakage from shock and vibration.

Typical applications include holding gears and sprockets onto

gearbox shafts and rotors on electric motor shafts .

TYPICAL PROPERTIES OF UNCURED MATERIAL

Specific Gravity @ 25 °C 1.13

Flash Point - See MSDS

Viscosity, Brookfield - RVT, 25 °C, mPa·s (cP):

Spindle 2, speed 20 rpm, 400 to 600

LMS

Viscosity, EN 12092 - MV, 25 °C, after 180 s, mPa·s (cP):

Shear rate 129 s

-1

300 to 600

TYPICAL CURING PERFORMANCE

Cure Speed vs. Substrate

The rate of cure will depend on the substrate used. The graph

below shows the shear strength developed with time on steel

pins and collars compared to different materials and tested

according to ISO 10123.

% of Full Strength on Steel

Cure Time

100

1min 5min10min 30min 1h 3h 6h 24h 72h

Steel

Aluminum

Zinc dichromate

Cure Speed vs. Bond Gap

The rate of cure will depend on the bondline gap. The following

graph shows shear strength developed with time on steel pins

and collars at different controlled gaps and tested according to

ISO 10123.

% of Full Strength on Steel

Cure Time

100

1min 5min10min 30min 1h 3h 6h 24h 72h

0.25 mm

0.15 mm

0.05 mm

Cure Speed vs. Temperature

The rate of cure will depend on the temperature. The graph

below shows the shear strength developed with time at

different temperatures on steel pins and collars and tested

according to ISO 10123.

% of Full Strength on Steel

Cure Time

100

1min 5min10min 30min 1h 3h 6h 24h 72h

40 °C

22 °C

5 °C

Summary of content (3 pages)

PAGE 1
Technical Data Sheet LOCTITE® 648™ (OLD) Flash Point - See MSDS Viscosity, EN 12092 - MV, 25 °C, after 180 s, mPa·s (cP): Shear rate 129 s-1 300 to 600 TYPICAL CURING PERFORMANCE Cure Speed vs. Substrate The rate of cure will depend on the substrate used. The graph below shows the shear strength developed with time on steel pins and collars compared to different materials and tested according to ISO 10123. el Ste 0 1min cd 5min10min 30min 1h 3h 6h Cure Time 24h 72h 100 mm 5m 0.25 0.1 0.
PAGE 2
TDS LOCTITE® 648™ (OLD), October-2005 100 75 9™ 764 tor ctiva 50 A 1™ 47 25 7 tor 0 1min No a tiv ac 5min10min 30min 1h 3h 6h Cure Time Physical Properties: Coefficient of Thermal Expansion, ISO 11359-2, K-1 Coefficient of Thermal Conductivity, ISO 8302, W/(m·K) Specific Heat, kJ/(kg·K) 24h 80×10-6 0.1 0.
PAGE 3
TDS LOCTITE® 648™ (OLD), October-2005 5. For Shrink Fitted Assemblies the adhesive should be coated onto the pin, the collar should then be heated to create sufficient clearance for free assembly. 6. Parts should not be disturbed until sufficient handling strength is achieved. For Disassembly 1. Apply localized heat to the assembly to approximately 250 °C. Disassemble while hot. For Cleanup 1.