McKissick Snatch Blocks - Rigging Equipment and …

1 McKissick Snatch Blocks SEE APPLICATION AND. WARNING INFORMATION. Para Espa ol: On Pages 358 - 365. 430 Super Champion WITH HOOK Drop forged, heat treated swivel hook or swivel shackle. Hook and shackle assemblies on 8 through 14 sizes can be interchanged. Can be furnished with bronze bushings or roller bearings. Pressure lube fittings. 430 and 431 Blocks have exclusive bolt retaining spring to assure no lost bolts. Can be furnished with hook latch. 8 and 10 models furnished with dual rated wireline sheaves. Fatigue Rated. All sizes are RFID EQUIPPED. Meets or exceeds all requirements of ASME including identification, ductility, design factor, proof load and temperature requirements. Importantly, these Blocks meet other critical performance requirements including fatigue life, impact properties and material traceability, not addressed by ASME 431. WITH SHACKLE 430 / 431 / 407 Snatch Blocks Weight Each Stock No.

2 Wire Working (lbs.). Sheave 430 431 407 Rope Load 430 431 407 Rep. Rep. Diameter Bearing with with Tail Size Limit with with Tail Sheave Latch (in.) Code Hook Shackle Board (in.) (t)* Hook Shackle Board Stock No. Stock No. 8 BB 120023 121022 103523 1 - 1-1/8 20 75 87 42 461440 1096657. 8 RB 120041 121040 103541 1 - 1-1/8 20 75 87 42 473614 1096657. 10 BB 120096 121095 103603 1 - 1-1/8 20 89 101 55 462083 1096657. 10 RB 120112 121111 103621 1 - 1-1/8 20 89 101 55 474105 1096657. 12 BB 208536 169917 184375 1 20 103 115 70 462680 1096657. 12 RB 208554 209303 184393 1 20 103 115 70 474524 1096657. 12 BB 120176 121175 103685 1-1/8 20 103 115 70 462699 1096657. 12 RB 120194 121193 103701 1-1/8 20 103 115 70 474533 1096657. McKissick 14 BB 208572 209321 184419 1 20 123 135 90 463457 1096657. Blocks 14 RB 208590 170424 184437 1 20 123 135 90 475024 1096657. 14 BB 120256 121255 103765 1-1/8 20 123 135 90 463466 1096657.

3 14 RB 120274 121273 103783 1-1/8 20 123 135 90 475033 1096657. 407 18. 18. BB. RB. 208689. 208732. 209410. 209465. 184552. 184605. 1. 1. 25. 25. 240. 240. 260. 260. 165. 165. 4100298 1090143. 4200331 1090143. TAIL BOARD 18 BB 119482 119561 119641 1-1/8 25 240 260 165 4103348 1090143. 18 RB 119491 119570 119650 1-1/8 25 240 260 165 4200322 1090143. 20 BB 208750 209483 184623 1-1/8 30 375 400 215 4103936 1090189. 20 RB 208787 169864 184650 1-1/8 30 375 400 215 4200769 1090189. 20 BB 119507 119589 119669 1-1/4 30 375 400 215 4103945 1090189. 20 RB 119516 119598 119678 1-1/4 30 375 400 215 4200778 1090189. 24 BB 208812 209526 184687 1-1/8 30 450 475 290 4104114 1090189. 24 RB 208858 209553 184721 1-1/8 30 450 475 290 4200983 1090189. 24 BB 119525 119605 119687 1-1/4 30 450 475 290 4104123 1090189. 24 RB 119534 119614 119696 1-1/4 30 450 475 290 4200992 1090189. * Ultimate Load is 4 times the Working Load Limit.

4 May be furnished in other rope sizes. NOTE: When ordering, please specify: size, block number, hook or shackle, bronze bushed or roller bearing, and wire rope size. NOTE: Tail Board does not contain the spool that is required with the hook (430) and shackle (431) Snatch Blocks . Contact our Speicals Sales Department for Blocks up to 350 Tons or reference the special request form on page 435. Copyright 2011 The crosby group LLC 341. All Rights Reserved TACKLE BLOCK AND General Cautions or Warnings SHEAVE ASSEMBLY Ratings shown in crosby group literature are applicable only to new or in as new products. WARNING, USE AND Working Load Limit ratings indicate the greatest force or load a product can carry under usual environmental conditions. MAINTENANCE INFORMATION Shock loading and extraordinary conditions must be taken into account when selecting products for use in tackle block WARNING systems.

5 Working Load Limit ratings are based on all sheaves of tackle block system being utilized. If all sheaves are not A potential hazard exists when lifting or dragging heavy loads with tackle block assemblies. utilized, balance must be maintained, and the Working Load Limit must be reduced proportionally to prevent overloading Failure to design and use tackle block systems sheave components. Changes from full sheave reeving properly may cause a load to slip or fall - the result could be serious injury or death. arrangement should be only at the recommendation of a qualified person, and incorporate good Rigging practices. Failure to design lifting system with appropriate sheave assembly material for the intended application In general, the products displayed in crosby group literature may cause premature sheave, bearing or wire rope are used as parts of a system being employed to accomplish wear and ultimate failure - the result could be serious a task.

6 Therefore, we can only recommend within the Working injury or death Load Limits, or other stated limitations, the use of products A tackle block system should be rigged by a qualified for this purpose. person as defined by ANSI/ASME The Working Load Limit or Design (Safety) Factor of Instruct workers to keep hands and body away from each crosby product may be affected by wear, misuse, block sheaves and swivels - and away from pinch overloading, corrosion, deformation, intentional alteration, points where rope touches block parts or loads. and other use conditions. Regular inspection must be Do not side load tackle Blocks . conducted to determine whether use can be continued at the See OSHA Rule (g) for personnel hoisting by catalog assigned WLL, a reduced WLL, a reduced Design cranes and derricks, and OSHA Directive CPL - (Safety) Factor, or withdrawn from service. Interim Inspection Procedures During Communication crosby group products generally are intended for tension Tower Construction Activities.

7 Only a crosby or McKissick Hook with a PL latch attached and secured or pull. Side loading must be avoided, as it exerts additional with a bolt, nut and cotter pin (or toggle pin) or a PL-N force or loading which the product is not designed to latch attached and secured with toggle pin; or a crosby accommodate. hook with an S-4320 latch attached and secured with Always make sure the hook supports the load. The latch must cotter pin or bolt, nut and pin; or a crosby SHUR- never support the load. LOC Hook in the locked position may be used for any personnel hoisting. A hook with a crosby SS-4055 Welding of load supporting parts or products can be latch attached shall NOT be used for personnel lifting. hazardous. Knowledge of materials, heat treatment, and Instruct workers to be alert and to wear proper safety welding procedures are necessary for proper welding. crosby gear in areas where loads are moved or supported with group should be consulted for information.

8 Tackle block systems. Crane component parts, the boom, block, overhaul ball, Use only genuine crosby parts as replacement. swivel, and wire ropes are metallic and will conduct electricity. Read, understand, and follow these instructions to Read and understand OSHA standard covering crane and select, use and maintain tackle block systems. derrick operations (29 CFR SUBPART N) before operating proximate to power lines. Important: For maximum safety and efficiency, tackle block and sheave Definitions systems must be properly designed, used, and maintained. STATIC LOAD The load resulting from a constantly applied You must understand the use of tackle block components force or load. and sheaves in the system. These instructions provide this knowledge. Read them carefully and completely. WORKING LOAD LIMIT The maximum mass or force which the product is authorized to support in general service Some parts of these instructions must use technical words when the pull is applied in-line, unless noted otherwise, with and detailed explanations.

9 NOTE: If you do not understand respect to the center line of the product. This term is used all words, diagrams, and definitions - DO NOT TRY TO interchangeably with the following terms. DESIGN OR USE A TACKLE BLOCK OR SHEAVE SYSTEM! For further assistance, call: 1. WLL. 2. Rated Load Value In crosby Engineered Products group at 3. SWL. 800-777-1555. 4. Safe Working Load In CANADA crosby Canada (905) 451-9261. 5. Resultant Safe Working Load In EUROPE crosby Europe (+32) (0)15 75 71 25. WORKING LOAD The maximum mass or force which the As you read instructions, pay particular attention to safety product is authorized to support in a particular service. information in bold print. PROOF LOAD The average force applied in the performance of a proof test; the average force to which a KEEP INSTRUCTIONS FOR FUTURE USE - DO NOT product may be subjected before deformation occurs. THROW AWAY!

10 PROOF TEST A test applied to a product solely to determine non conforming material or manufacturing defects. ULTIMATE LOAD The average load or force at which the product fails, or no longer supports the load. Rev. 3. 358 Copyright 2011 The crosby group LLC. All Rights Reserved SHOCK LOAD A force that results from the rapid 2. What is the weight of the load, including any dynamics application of a force (such as impacting and/or jerking) or of impacts that add to load value? You must know this rapid movement of a static load. A shock load significantly to determine the minimum required Working Load Limit adds to the static load. value of the block or load on sheave. DESIGN (SAFETY) FACTOR An industry term denoting a 3. How many parts of line are required? This can be product's theoretical reserve capability; usually computed by determined given the load to be lifted and the line dividing the catalog Ultimate Load by the Working Load Limit.