Snapidle - Special Conditions for Chain & Belt Tensioners

Special Conditions

Hi-Temp Snapidle™

For temperature applications ranging from 200 degrees Fahrenheit to 450 degrees Fahrenheit, the SI-HT series should be considered. With all the benefits of the standard Snapidle™, it offers the enhanced benefit of controlling drive chains in extreme temperatures. Where most tensioning systems are not applicable, Hi-Temp Snapidle™ solves the problem.

Extra-Heavy Snapidle™

In extreme environments, there is the SI-XH series. Dry, dusty and gritty environments (where the chain is usually not lubricated) require a product that can take the punishment. Recommended for the harshest environments and for high speed chain applications, the SI-XH is tougher than the environment.

Self Lubricating Snapidle™

The SI-SL series is recommended where chain lubrication is a problem. The SL Snapidle™'s top block contains up to 40% oil... lubricates while tensioning your chain.

Single Guide Snapidle™

Where space is at a premium, especially on serpentine drives, the SI-SG series is easily installed and adjustable. An economical way to adjust tension and control drive systems where the standard Snapidle™ is not applicable.

SELECTION CONSTRAINTS

VELOCITY LIMITS

• Oil bath: Chain speeds should not exceed 2,500 F.P.M.
• Standard lube: Chain speeds should not exceed 1,800 F.P.M.
• Bone dry: Chain speeds should not exceed 800 F.P.M.

ENVIRONMENT

• Temperature: Maximum operating range of any standard Snapidle™ unit is two hundred degrees F. For temperatures above two hundred degrees F. use the SI-HT Series Snapidle™. (Not to exceed 450* F.)
• Chemicals: Metal carriers are stainless steel. Screws and pins are zinc plated carbon steel. Wingnuts are die cast zinc. Bolts are zinc plated carbon steel with nylon inserts. All stainless steel (300,304) construction is available upon request.
• Environment: In extreme environment (i.e. abrasive grinder dust, foundries, gypsum facilities, dry glass, etc.) especially in a lack of lubrication situation, the wear on the carrier will be greatly enhanced. In the case where the standard Snapidle™ does not provide adequate life, the SI-XH Snapidle™ series should be used.
• Reversing Drives and Orientation: The Snapidle™ series has no limitation on the direction of rotation. The Snapidle™ may be used in any chain drive attitude.

MISALIGNMENT

The Snapidle™ series can tolerate any misalignment compatible with a roller chain drive and, in most applications, will allow a roller chain drive to operate with a larger misalignment. Misalignments in which the plane of one sprocket is rotated relative to the plane of the second or in which the plane of one sprocket is moved laterally relative to the other sprocket, or a combination of the two, can be tolerated.

SPECIAL APPLICATIONS

For drives not listed in the cross-reference charts, for non-listed chemical applications or for further engineering information: please supple the following information:

1. Type of Chain
2. Manufacture of chain and designation
3. Sprocket diameters
4. Horsepower, motor selection and speed
5. Environment and temperature conditions
6. If guarded, space criteria
7. Center distances of drive

SEND TO:
M.I.C.
Engineering Dept.
P.O. Box 9007
Yakima, WA  98909

Fax # (509) 575-0890