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The NBSJ Excavator Hook is a grade 8 excavator hook. These hooks are welded directly to the booms of bucket or crane loaders. (Welding instructions are supplied with each hook). Note: Lifting with the teeth of an excavator is not allowed. These hooks can also be welded on a beam to create a lifting beam. The large surface with chamfer makes the welding easy and safe. Latches are fitted as standard, to prevent accidental unhooking. The NBSJ Excavator Hook is available in a range with a working load limit from 1 t. up to 15 t.
Weld-On hooks are to only be welded to a structure, equipment or machinery in an area (load point) approved by the original equipment manufacturer. (Some manufacturers may not approve the modification of their product.)
• For hydraulic excavator lift capacity rating, refer to SAE standard J1097.
• A visual periodic inspection for cracks, nicks, wear, gouges and deformation as part of a comprehensive documented inspection program, should be conducted by trained personnel.
• A visual periodic inspection of the weld should be performed. Check the weld visually, or use a suitable NDE method if required.
• As excavator buckets are not specifically designed for constant use with excavator hooks, we recommend regular and very thorough inspection of the excavator bucket welding area to ensure no distortion has been made to the work area.
• Never use a hook whose throat opening has been increased, or whose tip has been bent more than 10 degrees out of plane from the hook body, or is in any other way distorted or bent.
Note: A latch will not work properly on a hook with a bent or worn tip.
• Never use a hook that is worn beyond the limits shown in Figure 1.
• Remove from service any hook with a crack, nick, or gouge. Hooks with a nick or gouge shall be repaired by grinding lengthwise, following the contour of the hook, provided that the reduced dimension is within the limits shown in Figure 1. Contact to evaluate any crack.
• Never repair, alter, rework, or reshape a hook by welding, heating, burning, or bending. K9003877 Doosan Volvo Hyundai Mini Vertical Teeth
• Always make sure the hook supports the load. The load is to be applied within the range shown in Figure 2. The latch must never support the load (See Figure 3).
• Never side load (See Figure 4), or tip load (See Figure 5) a hook.
• The use of a latch may be mandatory by regulations or safety codes; e.g., OSHA, MSHA, ANSI/ASME B30, Insurance, etc. (Note: When using latches, see instructions for further information.)
• Ensure latch functions properly. Use only genuine Crosby replacement parts.
• Never attach more than one sling directly in hook. For collecting two or more slings to the hook, use proper hardware.
• See ANSI/ASME B30.10 “Hooks” for additional information.
The strength of the weld-on hook depends upon the method of attachment. Extreme care must be used in choice of support as well as during the attachment process.
• The support structure that the hook is attached to must be of suitable size, composition and quality to support the anticipated loads of all operating positions. The required support structure material thickness for a given application is dependent on variables such as unsupported length and material strength, and should be determined by a qualified individual. Minimum plate thickness required to support the welds are shown