Information > Chain and Chain Assemblies

Chain and Chain Assemblies

Chain and Chain Assemblies

Common Chain Sling Assemblies:
 
Single
 Double
 Triple
 Quad
 Adjustable Loop
 Basket

DEFINITIONS:
Working Load Limit
Refers to the maximum load (rated capacity) in pounds that shall be applied in direct tension to a straight length of chain or attachment. The working load limit shall not be exceeded.

Proof Test (or Manufacturing Test Force)
Refers to a load in pounds which an attachment or chain (or both) has withstood during a test in which an increasing tension is applied to an attachment or straight length of chain. This is typically accomplished as part of the manufacturing or testing process.

Minimum Break Load
Refers to a load in pounds as applied to an attachment or chain at the time it left the factory that has been found by representative testing to break the item under test of increasing force as applied by a standard testing machine. This is a manufacturing test and such data is not intended for service or design purposes.

 
  WARNINGS
Never exceed the "working load limit" of chain and attachments, even when the item is new and the load is uniformly applied.
Before use, always inspect chain and attachments for kinking, twisting, knotting, and visible defects such as distortion or damage.
Do not jerk load. Apply a slow, steady pull.
Protect items from corrosion. Any product will break if abused or over-used.
Use only alloy chain and attachments (Grade 80) for overhead lifting purposes, never any other chain.
The terms "working load limit" "proof test" and "minimum break load" contain no implication of what load an attachment or chain will withstand, if any, if the factors noted in the "Definitions" are changed.
The "working load limit" should not be exceeded, even when an attachment or chain is new and the load is uniformly distributed.

 

Caution: Check Wear Regularly
Chain size Remove/Unsafe
1/4" 15/64
3/8" 5/16
1/2" 7/16
5/8" 17/32
3/4" 21/32
7/8" 3/4
Check Each Link

 

Most Common Types Of Chain

Stainless Steel Chain
Uses: Food processing, chemical and marine applications, and wherever non-magnetic, electrically welded, corrosion resistant chain is needed. DO NOT USE FOR OVERHEAD LIFTING. Minimum elongation 15%. Proof tested.

Proof Coil Chain (Grade 30)
Uses: Excellent general purpose chain of standard commercial quality for all ordinary applications not requiring high strength-to-weight ratios. Frequently used for fabricating tow chains, binding or tiedown chain and logging chains. DO NOT USE FOR OVERHEAD LIFTING. Minimum elongation 15%. Proof tested.

High Test Chain (Grade 40)
Uses: Designed for use in load binding, towing, logging and other applications requiring higher strength-to weight ratios than System 3. DO NOT USE FOR OVERHEAD LIFTING. Minimum elongation 15%. Proof tested.

Transport Chain (Grade 70)
Uses: Designed for use in load binding, towing, logging and many applications requiring higher strength-to weight ratios than grade 40. grade 70 meets stringent DOT regulations with smaller chain that is lighter in weight and easier to handle. DO NOT USE FOR OVERHEAD LIFTING. Minimum elongation 15%. Proof tested.

Aluminum Chain
Uses: Chemical processing, explosives manufacturing, petroleum refining, food processing, landscaping and crowd control, wherever a non-magnetic non-sparking chain is needed. Ideally suited for applications requiring optimum strength-weight ratios and maximum resistance to atmospheric and salt water corrosion. NOT TO BE USED FOR DYNAMIC LOAD CONDITION. DO NOT USE FOR OVERHEAD LIFTING. Proof tested. STANDARD MATERIAL: 5056 aluminum-magnesium alloy.

Grade70 Fishing Chain
Uses: Designed to accommodate all types of chain need s in the trawling industry. DO NOT USE FOR OVERHEAD LIFTING. Minimum elongation 15%. Proof tested.STANDARD MATERIAL: High strength heat treated steel which resists shock loading and corrosive elements.

System 8, Alloy Chain
Uses: SPECIFICALLY RECOMMENDED FOR OVERHEAD LIFTING and applications which demand a combination of minimum weights and high working load limits. Elongates in excess of the 15% minimum requirement. Proof tested. STANDARD MATERIAL: Alloy steel, heat treated.

Grade 100
Uses: 25% Stronger than Grade 80 Alloy, Allows downsizing of chain and components resulting in less sling weight and increased mobility. Grade 100 chain Components are avaiable for supply. For detail please contact us by email: sales@tooleegroup.com.cn or tel:86 532 88668543 or fax:86532 82737869

Straight Link Machine Chain
Uses: General utility farm and animal. DO NOT USE FOR OVERHEAD LIFTING.