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    Crosby® Forged Eye Bolt Warnings

    Crosby® Forged Eye Bolt Warnings

    IMPORTANT INFORMATION: READ, UNDERSTAND AND FOLLOW.

     

    Regular Nut Eye Bolt G-291

    Shoulder Nut Eye Bolt G-277

    Machinery Eye Bolt S-279 / M-279

     

    Inspection/Maintenance Safety:

    • Always inspect eye bolt before use.
    • Never use eye bolt that shows signs of wear or damage.
    • Never use eye bolt if eye or shank is bent or elongated.
    • Always be sure threads on shank and receiving holes
      are clean.
    • Never machine, grind or cut eye bolt.

    Assembly Safety:

    • Never exceed Work Load Limits specified in Tables 1 & 2.
    • Never use regular nut eye bolts for angular lifts.
    • Always use shoulder nut eye bolts (or machinery eye bolts) for angular lifts.
    • For angular lifts, adjust Work Load as follows:

    Direction of Pull (in-line)

    Adjusted Work Load

    45 degrees

    30% of Work Load Limit

    90 degrees

    25% of Work Load Limit

    • Never undercut eye bolt to seat shoulder against
      the load.
    • Always countersink receiving hole or use washer with sufficient I.D. to seat shoulder.
    • Always screw eye bolt down completely for proper seating.
    • Always tighten nuts securely against the load.

    Table 1 In-Line Load

    Size (Inches)

    Work Load Limit (Lbs.)

    1/4

    650

    5/16

    1,200

    3/8

    1,550

    1/2

    2,600

    5/8

    5,200

    3/4

    7,200

    7/8

    10,600

    1

    13,300

    1-1/8

    15,000

    1-1/4

    21,000

    1-1/2

    24,000

    1-3/4

    34,000

    2

    42,000

    2-1/2

    65,000


     

     

    • Loads may slip or fall if proper eye bolt assembly and lifting procedures are not used.
    • A falling load may cause serious injury or death.
    • Read and understand these instructions and follow all eye bolt safety information presented here.
    • Read, understand and follow information in diagrams and charts below before using eye bolt assemblies.

     

     

    Table 2 In-Line Load

    Metric Size

    Work Load Limit (Kgs.)

    M6

    200

    M8

    400

    M10

    640

    M12

    1,000

    M16

    1,800

    M20

    2,500

    M24

    4,000

    M27

    5,000

    M30

    6,000

    M36

    8,500

    M42

    14,000

    M48

    17,300

    M64

    29,500

    Regular Nut and Shoulder Nut Eye Bolt-Installation for In-Line Loading.


    OPERATIONAL SAFETY CONSIDERATIONS
    • Always stand clear of load.
    • Always lift load with steady, even pull – do not jerk.
    • Always apply load to eye bolt in the plane of the eye,
      not at an angle.
     
    • Never exceed the Work Load Limit of the eye bolt, see Tables I & 2.
    • When using lifting slings of two or more legs, make sure the loads in the legs are calculated using the angle from the vertical to the leg and properly size the shoulder nut or machinery eye bolt for the angular load.
     
     
    MACHINERY EYE BOLT- INSTALLATIONS FOR IN-LINE AND ANGULAR LOADING.

    Machinery Eye Bolts are primarily intended to
    be installed into tapped holes.
    1. After the loads on the eye bolts have been calculated, select the proper size eye bolt for the job.
      For angular lifts, adjust Work Load Limit as follows:

      Direction of Pull (In-Line)

      Adjusted Work Load

      45 Degrees

      30% of Work Load Limit

      90 Degrees

      25% of Work Load Limit


    2. Drill and tap the load to the correct sizes to a minimum depth of one-half the eye bolt size beyond the shank length of the machinery eye bolt.
    3. Thread the eye bolt into the load until the shoulder is flush and securely tightened against the load.
    4. If the plane of the machinery eye bolt is not aligned with the sling line, estimate the amount of unthreading rotation necessary to align the plane of the eye properly. Remove the machinery eye bolt from the load and add shims (washers) of proper thickness to adjust the angle of the plane of the eye to match the sling line. Use Table 3 to estimate the required shim thickness for the amount of unthreaded rotation required.


     

    Table 3

    Eyebolt

    Size

    Inches

    Shim

    Thickness*

    Inches

    Eyebolt

    Size

    mm

    Shim

    Thickness*

    mm

    1/4

    .0125

    M6

    .25

    5/16

    .0139

    M8

    .31

    3/8

    .0156

    M10

    .38

    1/2

    .0192

    M12

    .44

    5/8

    .0227

    M16

    .50

    3/4

    .0250

    M20

    .62

    7/8

    .0278

    M24

    .75

    1

    .0312

    M27

    .75

    1-1/8

    .0357

    M30

    .88

    1-1/4

    .0357

    M36

    1.00

    1-1/2

    .0417

     

     

    1-3/4

    .0500

    M42

    1.13

    2

    .0556

    M48

    1.25

    2-1/2

    .0625

    M64

    1.50

    *Shim thickness required to change rotation 90 degrees.

    Minimum tap depth is basic shank length plus one-half the nominal eye bolt diameter.