Muncy-Upson: Closed Strand Sockets

MUNCY™ Closed Strand Spelter Sockets
For use on structural strand.

This socket is used for structural strand and rope.

Metric

Metric	A	J	K	L	N	P	Q	U	W	R	WEIGHT	Metric
Rope	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	Kg	Strand
44-48	397	156	83	190	51	159	51	95	98	49	101	37-41
51-54	425	165	95	203	57	165	57	102	108	54	123	43-44
57-60	454	171	102	222	60	178	57	114	111	56	148	46-48
57-60	479	178	108	241	60	184	60	121	121	10	172	49-51
-	514	197	108	254	63	200	63	121	127	63	212	52-54
63-67	537	200	121	267	70	210	67	140	133	67	251	56-57
70-73	562	210	127	279	73	216	70	152	140	70	295	59-60
76-79	641	216	133	292	83	235	75	165	146	73	368	62-65
-	610	222	146	305	83	241	79	165	159	79	401	67-70
83-86	660	254	152	311	95	270	86	178	165	83	534	73-76
89-92	679	267	165	317	95	292	95	190	178	89	622	79-83
-	705	273	178	330	102	311	102	203	184	92	756	86-89
95-102	730	279	184	343	108	330	108	216	190	95	862	92-95
108-114	756	286	197	356	114	356	114	222	197	98	1025	98-102
-	825	298	200	435	92	349	133	241	197	98	1012	105-111
-	879	317	206	451	111	368	146	267	203	102	1206	114-121

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

IMPORTANT INFORMATION

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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