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- MuncyTM 1-1/2" and smaller Rope Sockets are a grooveless design for use with polyester resin or zinc socketing compounds.
- MuncyTM 1-5/8" and larger Rope Sockets are a grooved design that meet the requirements of Federal Specification RR-S-550D.
- Specially designed retaining segments prevent rotation and pop-out of socketing compound. 1-1/2" and smaller MuncyTM Rope Sockets and all MuncyTM Strand Sockets feature these retaining segments.
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Muncy Machine Spelter Sockets can be used for Wire Rope or Strand. We are proud that our Spelter Sockets are quality Domestic Spelter Sockets MADE IN USA using quality casting from domestic foundries and our machining.
We have two different lines of spelter sockets: the “Strand Style” and the “Rope Style”. The “Strand Style” was designed by Bethlehem Engineers and manufactured by Muncy Machine since the 1960s. The design has a shorter basket than other spelter socket designs for a weight-saving/cost-saving advantage. “Strand Style” spelter sockets, while designed for strand, are routinely used for wire rope. They have the same pin and jaw dimensions as the industry-standard “Rope Style” spelter sockets. Sockets are made for zinc pouring, though can be made for resin by request.
“Strand Style” spelter sockets are designed with a 5 to 1 safety factor. Muncy spelter sockets feature added quality with machined pin holes, with the larger sizes 100% di-penetrate testing.
“Rope Style” spelter sockets are designed to the industry standards. Sizes ½” Wire Rope to 1-1/2” Wire Rope are groove-less castings. Sizes 1-5/8” to 4” Wire Rope are grooved castings made to the 550D Federal Specification. Sockets are made both zinc pouring and resin.
“Rope Style” spelter sockets are designed with a 5 to 1 safety factor. Muncy spelter sockets feature added quality with machined pin holes, with the larger sizes 100% di-penetrate testing.
Our Muncy Spelter Sockets come self-colored, painted and galvanized. Muncy Spelter Sockets are frequently used in bridges, roofs, construction, etc. and used around the world.
Spelter Sockets, if used improperly, can result in unsafe conditions, and perhaps cause death or serious bodily injury. Before using Muncy Spelter Sockets, please consult with experts & test your Muncy Spelter Socket assemblies.
There are many ways to go wrong in socketing procedures. Some of the common pitfalls that should be guarded against include:
- Turning back the strands – inward or outward – before the “broom” is inserted into the socket;
- Turning back the strands and seizing them to the body of the rope;
- Turning back the strands and tucking them into the body of the rope;
- Tying a knot in the rope;
- Wedging nails, spikes, bolts, etc. into the socket after the rope is inserted in an attempt to secure a tight fit. This is a particularly dangerous practice
Some socket manufacturers do not recommend the reattachment of used poured sockets. Consult the manufacturer for specific recommendations. We have added this excerpt from the Third Edition of the Wire Rope Sling Users Manual for your information:
“Improperly attached wire rope terminals lead to serious –possibly unsafe- conditions. To perform properly, all wire rope elements must be held securely by the terminal. If this is not accomplished, the strands will become unequally loaded and it is likely that a strand will become “high”.
Poured sockets have traditionally been the method for determining the rope’s actual breaking strength. All other types of terminations have been compared to poured sockets. Their efficiency is therefore established to be 100% for all grades and constructions of rope.
Rope assemblies with poured attachments are generally used as a straight tension member where the rope body does not contact the load and is otherwise kept free from distortion or physical abuse. In such cases, where the rope acts as a pendant line, the minimum recommended design factor is 3.0. If the assembly is used as a sling, then the minimum recommended design factor of 5.0 should be used to calculate the rated capacity.
Length tolerances for poured attachments can be somewhat more stringent than other types of assemblies. The manufacturer should be contacted and agreement reached before the order is placed. Tolerance as small as plus or minus 1/8” is not out of the ordinary for this type of assembly. Specifications such as type of fitting, pin orientation (See Appendix B), whether zinc or resin should be used, and type of application should also be supplied to the manufacturer when order these types of assemblies.
When preparing a wire rope for socketing it is of extreme importance to follow recommended procedures. (See Appendix C: SOCKETING PROCEDURES.) Those inexperienced in the socketing process should not try to fabricate assemblies without first getting expert training. It is far better to leave fabrication of this type of assembly to the experts.
It is recommended that all poured sockets, whether they be zinc or resin, be proof loaded.
Appendix C SOCKETING
POURED SOCKET – Spelter or Resin
The following socketing methods are general in nature and have been proven over years of use. Procedures for zinc and resin differ significantly, but will achieve the same end result. Slight variations to these procedures have been used with acceptable results, however this cannot be predetermined without destructive tests.
There are many ways to go wrong in socketing procedures. Some of the common pitfalls that should be guarded against include:
- Turning back the strands – inward or outward – before the “broom” is inserted into the socket;
- Turning back the strands and seizing them to the body of the rope;
- Turning back the strands and tucking them into the body of the rope;
- Tying a knot in the rope;
- Wedging nails, spikes, bolts, etc. into the socket after the rope is inserted in an attempt to secure a tight fit. This is a particularly dangerous practice.
Zinc-Poured Spelter Socketing
1. Measure the Rope Ends to be Socketed
The Rope end should be of sufficient length so that the ends of the unlaid wire (from the strands) will be at the top of the socket basket. (Fig. C1)
2. Apply Serving at Base of Socket
Apply a tight serving band for a length of two rope diameters, at the point where the socket base will be, to eliminate any distortion below the band of the wire and strands. (Figs. C2 & C3)
3. Broom Out Strand Wires
Unlay and straighten the individual rope strands and spread them evenly so that they form an included angle of approximately 60 degrees. Unlay the wires of each individual strand for the full length of the rope end – being careful not to disturb or change the lay of the wire and strands under the serving band. Unlay the wires of the independent wire rope core (IWRC) in the same manner. A fiber core should be cut out and removed as close to the serving band as possible.”
These excerpts are used for informational purposes only.
Muncy Machine makes no warranties or representations whatsoever.
Consult a professional before installation.
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