About Our Blocks. Section 2. Tip!

Transcription

1 About Our Blocks Sheave Materials Nylatron GS sheaves with molded grooves are available in eight inch (nominal) diameter for 3/4" manila rope and 1/4" wire rope. Nylatron GSM sheaves with machined grooves are also available in a twelve inch diameter for head blocks. The grey iron used in our cast sheaves is ASTM A48 Class 30, a high-quality cast iron chosen for its ability to handle the static and dynamic loads involved in stage rigging. All grey iron sheaves have machined grooves. Custom sheaves can be machined from cast Nylatron GSM, grey iron, or steel to meet special requirements. Bearings All J.R.Clancy sheaves, eight inches and larger, are equipped with either maintenance free, sealed precision ball bearings or tapered roller bearings, rated for the specified loads. Shafts Sheaves are supported by machined steel shafts. Shafts are keyed to the side plate at one end to prevent rotation, and have a fine thread self locking nut on the other end to allow for bearing adjustment. Clancy uses sealed, precision ball bearings with lifetime lubrication in many blocks. Tapered roller bearings are greased in the factory with a lubricant that will last for many years of normal use. If lubrication becomes needed, please consult the factory. A casual squirt of oil or dab of grease could end up on the stage floor, the curtains, or the scenery, and might possibly cause a mess or a safety hazard. Applications Several series of blocks are available to meet different installation requirements. 19 Series Underhung Loft Blocks for direct mounting to a single I beam. 24 Series Light Duty Underhung Blocks with in-line holes for mounting; typically to wood beams or Unistrut. Loft blocks and multi-sheave blocks are available, both in standard and pivoting models. 55 Series Upright Blocks with fully enclosed sheaves. These are normally mounted over two I beams or channels. Head blocks, loft blocks, and multi-sheave blocks are available. 59 Series Underhung Blocks with fully enclosed sheaves. These are normally supported by one or two I beams. Head blocks and loft blocks are available. 59 Series underhung blocks may need to be welded in position, depending on application. Recommended Working Loads Recommended Working Loads (RWL s) are listed on the following pages for many blocks of standard design and construction. Ratings are for blocks mounted using standard design and construction. Ratings are for blocks mounted using standard hole spacing and Clancy mounting hardware in an approved manner. Data is based on correctly sized cables wrapped 90 degrees around the sheaves as shown on the outline drawings, except for mule blocks that assume 180 degrees of cable wrap. Contact J.R. Clancy if ratings are required for other conditions. 2-1

2 Head Blocks, Upright 55 Series 1CD-61255R Upright Head Block Change the S to D in the part number for double purchase head blocks. Wire Guide Blocks Change the R suffix to W in the part number for blocks with tieoffs for arbor guide wires. Tieoffs Tieoffs for guided clew wires are also available. Mounting Hardware Mounting clips of various sizes are available for head blocks. Catalog No. Description /8" x 5" Welded Clip, 1/2" toe, for 6 line head blocks (3/4" & 1" toe also available) /8" x 6" Welded Clip, 1/2" toe, for 8 line head blocks (3/4" & 1" toe also available) Upright style, normally supported by two structural beams ASTM Class 30 grey iron or Nylatron GSM sheave with machined grooves Equal pitch diameter on rope and cable grooves for smooth operation Tapered roller bearings Base angle legs turned in to allow close mounting centers. Notches allow clear passage of all cables 10 gauge side plates fully enclose sheave; 16" blocks have 7 gauge side plates Side plates are bolted and welded to the base angles for maximum strength Six spacers between the side plates; four prevent cables from escaping the sheave grooves 8-5/8" Diameter Sheaves 1" Bearings Catalog Number Rope Diameter Cable Quantity & Diameter Sheave Material RWL Lbs.* A B C D W 1CS-60855R 3/4" 1/4" Cast Iron " 19" 11-7/16" 10-1/8" 5-3/8" 1CS-80855R 3/4" 1/4" Cast Iron " 19" 11-7/16" 10-1/8" 6-3/8" 12" Diameter Sheaves 1" Bearings Catalog Number Rope Diameter Cable Quantity & Diameter Sheave Material RWL Lbs.* A B C D W 1NS-61255R 3/4" 1/4" Nylatron " 17" 15" 13-11/16" 5-3/8" 1CS-61255R 3/4" 1/4" Cast Iron " 17" 15" 13-11/16" 5-3/8" 1NS-81255R 3/4" 1/4" Nylatron " 17" 15" 13-11/16" 6-3/8" 1CS-81255R 3/4" 1/4" Cast Iron " 17" 15" 13-11/16" 6-3/8" 16" Diameter Sheaves 1-1/2" Bearings Catalog Number Rope Diameter Cable Quantity & Diameter Sheave Material RWL Lbs.* A B C D W 1CS-81655R 1" 3/8" Cast Iron " 19" 18-15/16" 17-1/2" 7-3/8" Recommended Working Load The Recommended Working Load (RWL) is the maximum load which J.R.Clancy, Inc. recommends be applied to current, listed products which are in like-new condition and which have been properly installed, maintained, and operated. Impact loading is not taken into account. Care should be taken to avoid exceeding these limits. For multiline blocks, the listed RWL is the maximum load that may be distributed over all of the grooves. See page 2-1. *Consult us for RWL on double purchase blocks 1CD-61255R Upright Head Block Install blocks so mounting bolts touch the supporting structure on the load side. This keeps blocks from shifting toward the load. 2-2

3 Head Blocks, Underhung 59 Series 1CS-61259R Underhung Head Block Change the S to D in the part number for double purchase head blocks. Wire Guide Blocks Change the R suffix to W in the part number for blocks, with tieoffs for arbor guide wires. Tieoffs Tieoffs for guided clew wires are also available. Mounting Hardware Mounting clips of various sizes are available for head blocks. Catalog No. Description /8" x 5" Welded Clip, 1/2" toe, for 6 line head blocks (3/4" & 1" toe also available) /8" x 6" Welded Clip, 1/2" toe, for 8 line head blocks (3/4" & 1" toe also available) 070-CA Pair of Mounting Angles for Underhung Blocks Underhung style, normally supported by two structural beams ASTM Class 30 grey iron or Nylatron GSM sheave with machined grooves Equal pitch diameter on rope and cable grooves for smooth operation Tapered roller bearings Base angle legs turned in to allow close mounting centers 10 gauge side plates fully enclose sheave; 16" blocks have 7 gauge side plates Side plates are bolted and welded to the base angles for maximum strength Six spacers between the side plates; four prevent cables from escaping the sheave grooves Underhung blocks may need to be welded to support beams after final alignment. Consult the factory for specific information. 8-5/8" Diameter Sheaves 1" Bearings Catalog Number Rope Diameter Cable Quantity & Diameter Sheave Material RWL Lbs.* A B C E W 1CS-60859R 3/4" 1/4" Cast Iron " 19" 11-7/16" 2-1/4" 5-3/8" 1CS-80859R 3/4" 1/4" Cast Iron " 19" 11-7/16" 2-1/4" 6-3/8" 12" Diameter Sheaves 1" Bearings Catalog Number Rope Diameter Cable Quantity & Diameter Sheave Material RWL Lbs.* A B C E W 1NS-61259R 3/4" 1/4" Nylatron " 17" 15" 2-5/16" 5-3/8" 1CS-61259R 3/4" 1/4" Cast Iron " 17" 15" 2-5/16" 5-3/8" 1NS-81259R 3/4" 1/4" Nylatron " 17" 15" 2-5/16" 6-3/8" 1CS-81259R 3/4" 1/4" Cast Iron " 17" 15" 2-5/16" 6-3/8" 16" Diameter Sheaves 1-1/2" Bearings Catalog Number Rope Diameter Cable Quantity & Diameter Sheave Material RWL Lbs.* A B C E W 1CS-81659R 1" 3/8" Cast Iron " 19" 18-15/16" 2-3/8" 7-3/8" Recommended Working Load The Recommended Working Load (RWL) is the maximum load which J.R.Clancy, Inc. recommends be applied to current, listed products which are in like-new condition and which have been properly installed, maintained, and operated. Impact loading is not taken into account. Care should be taken to avoid exceeding these limits. For multiline blocks, the listed RWL is the maximum load that may be distributed over all of the grooves. See page 2-1. *Consult us for RWL on double purchase blocks 1CS-61259R Underhung Head Block To minimize wear and friction in cables and grooves, fleet angles must not exceed 1-1/2º. Equipment will operate harder and have decreased levels of safety at higher fleet angles. 2-3

4 Loft Blocks, Underhung 19 Series 2NC-10819U Underhung Loft Block 3CC-40819R Underhung Loft Block 1st character indicates bearing type: 2 = Ball Bearings 3 = Tapered Roller Bearings All blocks listed with ball bearings may be upgraded to tapered roller bearings by changing the first digit to 3. Last character indicates the throat size. All blocks are available with 3/8" R or 3/4" U throats. R = 3/8" thick beam flange Blocks have 4-1/4" to 8 grip U = 3/4" thick beam flange 8" Blocks have 4-1/4"to 8-3/4" grip 12" Blocks have 5-1/2" to 10" grip Underhung style, supported by a single structural beam Nylatron GS sheave with molded groove or ASTM Class 30 grey iron sheave with machined grooves Sealed precision ball bearings (8" nominal only) or tapered roller bearings 10 gauge side plates 3/4" drawbolt and steel clip allow a 4" grip adjustment to accommodate a range of beam sizes A minimum of three spacers between the side plates; two prevent cables from escaping the sheave grooves Cable Blocks 1/4 Groove Catalog Line Sheave Sheave RWL Lbs. Bearing A B* B + C D W Number Diameter Material Diameter 2NC-10819R 1 8-1/2" Nylatron mm 13-13/16" 2-1/16" 1-1/4" 12-1/4" 2-3/8" 2-3/16" 2CC-10819R 1 8-1/2" Cast Iron mm 13-13/16" 2-1/16" 1-1/4" 12-1/4" 2-3/8" 2-3/16" 2CC-20819R 2 8-1/2" Cast Iron mm 13-13/16" 2-1/16" 1-1/4" 12-1/4" 2-5/16" 2-3/16" 3CC-40819R 4 8-1/2" Cast Iron 700 1" 14-1/4" 13-3/8" 2-3/16" 3-7/16" 3CC-80819R 8 8-1/2" Cast Iron 700 1" 14-1/4" 13-3/8" 2-3/16" 5-1/8" 3CC-11219R 1 12" Cast Iron 675 1" 17-11/16" 5-5/8" 4-3/16" 17" 2-9/16" 2-7/8" 3CC-21219R 2 12" Cast Iron 675 1" 17-11/16" 5-5/8" 4-3/16" 17" 2-9/16" 2-7/8" B*= 3/8" Throat B + = 3/4" Throat Rope Blocks 3/4 Groove Catalog Line Sheave Sheave RWL Lbs. Bearing A B* B + C D W Number Diameter Material Diameter 2NR-10819R 1 8" Nylatron mm 13-3/4" 2-1/16" 1-1/4" 12-1/4" 2-3/4" 2-3/16" 2CR-10819R 1 8" Cast Iron mm 13-3/4" 2-1/16" 1-1/4" 12-1/4" 2-3/4" 2-3/16" B*= 3/8" Throat B + = 3/4" Throat Recommended Working Load The Recommended Working Load (RWL) is the maximum load which J.R.Clancy, Inc. recommends be applied to current, listed products which are in like-new condition and which have been properly installed, maintained, and operated. Impact loading is not taken into account. Care should be taken to avoid exceeding these limits. For multiline blocks, the listed RWL is the maximum load that may be distributed over all of the grooves. See page CC-40819R Underhung Loft Block 2NC-10819U Underhung Loft Block Don't over tighten the clip nuts on 19 Series blocks. It won t increase their holding power, but may reduce the strength of the blocks. 2-4

5 Loft Blocks, Upright 55 & Underhung 59 2NC-10855R Upright Loft Block 2NC-10859R Underhung Loft Block 1st character indicates bearing type: 2 = Ball Bearings 3 = Tapered Roller Bearings All blocks listed with ball bearings may be upgraded to tapered roller bearings by changing the first digit from 2 to 3. Mounting Hardware Mounting clips of various sizes are available for loft blocks. Catalog No. and Description 070-CP Clip package for 8" loft blocks with 4 each 3/8" x 4" J-bolts, 2 each formed clips, 1 each u-clip, 4 each 3/8" x 1-1/2" hex bolts, 1 each 3/8" x 3-1/2" hex bolt, 4 each 3/8" flat washer, and 4 each 3/8" serrated flange lock nuts /4" x 4-1/2" Formed Clip, 1/2" toe, for 1 and 2 line loft blocks /4" x 5" Formed Clip, 1/2" toe, for 12", single line loft block (3/4" & 1" toe also available) /8" x 5" Welded Clip, 1/2" toe, for 8 line loft blocks (3/4" & 1" toe also available) /8" x 5-1/2" Welded Clip, 1/2" toe, for 4 line loft blocks (3/4" & 1" toe also available) Upright and underhung styles normally supported by structural beams or channels Nylatron GS sheave or ASTM Class 30 grey iron sheave with machined grooves Sealed precision ball bearings or tapered roller bearings Side plates fully enclose sheave Seven spacers between the side plates; four prevent cables from escaping the sheave grooves Underhung blocks may need to be welded to support beams after final alignment. Consult the factory for specific information. Cable Blocks 1/4 Groove Catalog Number Line Sheave Sheave RWL Bearing A B C D E W Side Diameter Material Lbs. Diameter Plate 2NC-10855R 1 8-1/2" Nylatron mm 20-1/4" 14-1/4" 11-1/2" 10-3/8" 2-5/8" 4-3/8" 12 ga 2NC-10859S /2" Nylatron mm 16-1/4" 10-3/4" 11-1/2" 10-3/8" 2-5/8" 4-3/8" 12 ga 2CC-10855R 1 8-1/2" Cast Iron mm 20-1/4" 14-1/4" 11-1/2" 10-3/8" 2-5/8" 4-3/8" 12 ga 2CC-10859S /2" Cast Iron mm 16-1/4" 10-3/4" 11-1/2" 10-3/8" 2-5/8" 4-3/8" 12 ga 2CC-20855R 2 8-1/2" Cast Iron mm 20-1/4" 14-1/4" 11-1/2" 10-7/16" 2-9/16" 4-3/8" 12 ga 2CC-20859S /2" Cast Iron mm 16-1/4" 10-3/4" 11-1/2" 10-7/16" 2-9/16" 4-3/8" 12 ga 3CC-40855R 4 8-1/2" Cast Iron " 32" 19" 11-7/16" 10-1/8" 2-1/4" 5-7/16" 10 ga 3CC-40859R 4 8-1/2" Cast Iron 900 1" 32" 19" 11-7/16" 10-1/8" 2-1/4" 5-7/16" 10 ga 3CC-80855R 8 8-1/2" Cast Iron " 32" 19" 11-7/16" 10-1/8" 2-1/4" 5-3/8" 10 ga 3CC-80859R 8 8-1/2" Cast Iron 900 1" 32" 19" 11-7/16" 10-1/8" 2-1/4" 5-3/8" 10 ga 3CC-11255R 1 12" Cast Iron 700 1" 24" 14" 15" 13-11/16" 2-5/16" 4-3/4" 10 ga 3CC-11259R 1 12" Cast Iron 700 1" 24" 14" 15" 13-11/16" 2-5/16" 4-3/4" 10 ga 3CC-21255R 2 12" Cast Iron " 24" 14" 15" 13-11/16" 2-5/16" 4-3/4" 10 ga 3CC-21259R 2 12" Cast Iron " 24" 14" 15" 13-11/16" 2-5/16" 4-3/4" 10 ga 3CC-11655R 1 16" Cast Iron 1-1/2" 26" 11" 18-15/16" 17-11/16" 2-3/16" 5-3/4" 7 ga 3CC-11659R 1 16" Cast Iron 1-1/2" 26" 11" 18-15/16" 17-11/16" 2-3/16" 5-3/4" 7 ga Rope Blocks 3/4 Groove Catalog Number Line Sheave Sheave RWL Bearing A B C D E W SP Diameter Material Lbs. Diameter 2NR-10855R 1 8" Nylatron mm 20-1/4" 14-1/4" 11-1/2" 10-7/16" 2-9/16" 4-3/8" 12 ga 2NR-10859S + 1 8" Nylatron mm 16-1/4" 10-3/4" 11-1/2" 10-7/16" 2-9/16" 4-3/8" 12 ga 2CR-10855R 1 8" Cast Iron mm 20-1/4" 14-1/4" 11-1/2" 10-7/16" 2-9/16" 4-3/8" 12 ga 2CR-10859S + 1 8" Cast Iron mm 16-1/4" 10-3/4" 11-1/2" 10-7/16" 2-9/16" 4-3/8" 12 ga + Change S (4" to 10" grip range) to R (9-1/2" to 16" grip range) for long base angles (20-1/4 ) Recommended Working Load The Recommended Working Load (RWL) is the maximum load which J.R.Clancy, Inc. recommends be applied to current, listed products which are in like-new condition and which have been properly installed, maintained, and operated. Impact loading is not taken into account. Care should be taken to avoid exceeding these limits. For multiline blocks, the listed RWL is the maximum load that may be distributed over all of the grooves. See page NC-10855R Upright Loft Block 2NC-10859R Underhung Loft Block 2-5

6 Loft Block Options Loft Block Mounting Grip Range Standard Clancy loft blocks are designed to accommodate a range of mounting configurations without the need for custom hole punching. 19 Series blocks grip the bottom flanges of beams. The blocks are made with two standard side plates with a grip range detailed in the Ordering Information column on page inch diameter, 55 and 59 Series blocks have base angles punched with holes and slots to accommodate a large range of mounting conditions. 855R and 859R blocks have a grip range of 9-1/2" to 16". 859S blocks have a grip range of 4" to 10". Contact the factory for additional options. 2NC-10819I Underhung Loft Block with Idlers 19 Series Change last digit of catalog number. R becomes I for 3/8" throat U becomes V for 3/4" throat 59 Series R becomes I for 20-1/4" base S becomes V for 16-1/4" base Idler Pulleys Idler pulleys may be added to underhung loft blocks to carry the weight of passing wire ropes, reduce sag, and prevent rubbing against adjacent blocks. Assemblies contain one or more 2-7/16" diameter plastic sheaves with ball bearings on a 1/4" diameter shaft. The idler pulley assembly is mounted to the side of the block housing. Idler pulleys cannot carry line loads or act as deflectors or mule blocks. We recommend that when using idler pulleys, the loft block closest to the head block should be a full size multi-line block with grooves for all of the lift lines. This ensures that fleet angle and other alignment stresses are not transferred to the idler pulleys. Idler pulleys are available for all J.R.Clancy underhung loft blocks. Specify the number of idler sheaves required, and which side of the block they should be mounted. Head blocks should be slightly (3-6 inches) offset from the batten and loft block location except when the loft blocks have idlers or multi-groove sheaves. In that case the head block first groove should be centered on the batten location. Custom Blocks and Sheaves Custom sheaves can be fabricated from cast iron, steel or Nylatron GSM to meet special requirements. An almost unlimited combination of groove types and sheave diameters are possible. Custom blocks can be designed to meet special needs. Possibilities include special sizes, materials, mounting configurations, bearings, shaft sizes, and multiple sheaves in a single block. Call us for any special requirements. 2-6

7 Multi-Sheave Blocks 19, 24 & 55 Series 4NR-40819R Underhung Multi-Sheave Block 19 Series 4NR-50855R Upright Multi-Sheave Block 55 Series Multi-sheave blocks are constructed in the same manner as loft blocks of the same series 55 Series blocks are constructed with the base angle legs are turned in to allow close mounting centers Nylatron GS sheaves with molded grooves or ASTM Class 30 grey iron sheave with machined grooves 17mm sealed precision ball bearings 12 gauge side plates located outside and between sheaves Underhung 19 Series + Catalog Number Sheave Quantity Sheave Diameter RWL Width* 4NR-20819R 2 8" /8" 4NR-30819R 3 8" /8" 4NR-40819R 4 8" /8" 4NR-50819R 5 8" /16" + Last character indicates throat size. R = 3/8" and U = 3/4" Underhung 24 Series & STET The second character indicates sheave material: C = Cast Iron N = Nylatron Change third character in the part number from R (3/4 rope) to C for 1/4 cable Call for mounting hardware information Catalog Number Sheave Quantity Sheave Diameter RWL Width* 4NR-20824R 2 8" /16" 4NR-20824P 2 8" /16" 4NR-30824P 3 8" /16" 4NR-40824P 4 8" /16" 4NR-50824P 5 8" /8" R = Underhung and P = Pivoting Upright 55 Series Catalog Number Sheave Quantity Sheave Diameter RWL Width* 4NR-20855R 2 8" /16" 4NR-30855R 3 8" /16" 4NR-40855R 4 8" /16" 4NR-50855R 5 8" /8" * Except for width, all dimensions are the same as single line versions listed on previous pages. * Except for width, all dimensions are the same as single line versions listed in previous pages. Recommended Working Load The Recommended Working Load (RWL) is the maximum load which J.R.Clancy, Inc. recommends be applied to current, listed products which are in like-new condition and which have been properly installed, maintained, and operated. Impact loading is not taken into account. Care should be taken to avoid exceeding these limits. For multiline blocks, the listed RWL is the maximum load that may be distributed over all of the grooves. See page

8 Mule Blocks 12 Series 5C C Mule Block Used to divert the cables around obstructions or change direction of travel ASTM Class 30 grey iron sheave with machined grooves Sealed precision ball bearings or tapered roller bearings 7 gauge side plates fully enclose sheave Base made from 8" structural steel channel Four spacers between the side plates prevent cables from escaping the sheave grooves Cable Blocks 1/4" Groove 3rd character indicates bearing type: 2 = Ball Bearings 3 = Tapered Roller Bearings All blocks listed with ball bearings may be upgraded to tapered roller bearings by changing the third digit to 3. Call for mounting hardware information Catalog Line Sheave Sheave RWL* Bearing A B C E W Number Diameter Material Diameter 5C C 1 8-1/2 Cast Iron mm 14-1/2" 7-1/4" 4-1/16" 3" 10-1/2" 5C C 2 8-1/2 Cast Iron mm 14-1/2" 7-1/4" 4-1/16" 3-1/8" 10-1/2" 5C C 4 8-1/2 Cast Iron " 14-1/2" 7-1/4" 4-1/16" 2-15/16" 10-1/2" 5C C 8 8-1/2 Cast Iron 900 1" 14-1/2" 7-1/4" 4-1/16" 2-15/16" 10-1/2" 5C C 1 12" Cast Iron 700 1" 18" 4-1/2" 14" 3-5/16" 14" 5C C 2 12" Cast Iron 700 1" 18" 4-1/2" 14" 3-1/8" 14" 5C C 4 12" Cast Iron " 18" 5-1/8" 14" 2-15/16" 14" 5C C 8 12" Cast Iron " 18" 7-1/16" 14" 2-15/16" 14" *RWL does not change when tapered roller bearings are used. Recommended Working Load The Recommended Working Load (RWL) is the maximum load which J.R.Clancy, Inc. recommends be applied to current, listed products which are in like-new condition and which have been properly installed, maintained, and operated. Impact loading is not taken into account. Care should be taken to avoid exceeding these limits. For multiline blocks, the listed RWL is the maximum load that may be distributed over all of the grooves. See page C C Mule Block The mule block side plate furthest from the mounting steel may require bracing under heavy loads. Refer to shop drawings or call Clancy for details. 2-8

9 Floor Blocks, Tension & Automatic 6CR-1015 Tension Floor Block 6CR-1218 Sliding Tension Block Tension Floor Blocks Used as the return pulley for the handline in manual T-Bar type counterweight sets Minimum 40 lb. weight to properly tension the handline Kick tab permits easy re-adjustment of the block ASTM Class 30 grey iron sheave with machined groove for 3/4 rope Sealed precision ball bearings Steel shoes for added strength & grip Special shoe sizes available; consult factory Catalog Number Sheave Diameter Set Centers 6CR " 6" or 8" 6CR-1015U 10" Less Than 6" (specify centers) 6CR " 6" or 8" Sliding Tension Blocks Used with manual fire curtains to provide proper tension in the handline ASTM Class 30 grey iron sheave with machined groove for 3/4" or 1 rope Tapered roller bearings Sheave "floats" on two 3/4" diameter rods Adjustable locking collar to limit sheave travel Catalog Number Sheave Diameter Rope Diameter Sheave Material A 6CR " 3/4 Cast Iron 16" 6CR " 1 Cast Iron 19" 6CR-1015 Tension Floor Block 6CR-1218 Sliding Tension Block Clancy uses Grade 5 bolts, or better, with nylon insert lock nuts, serrated flange lock nuts, or heavy hex nuts and lock washers. We recommend using flat washers over all slotted holes. 2-9

10 Floor Blocks, Combination & Wire Guide 6CR-118 Fixed Combination Floor Block Fixed Combination Floor Blocks Used with individual wire guided or T-Bar counterweight sets Economical, fixed floor block; usually used on sets with limited travel Rope lock ( R) and floor block in a single unit Nylatron GS sheave or ASTM Class 30 grey iron sheave, grooved for 3/4" rope Sealed precision ball bearings Incorporates tie off points for arbor guide wires Catalog Number Sheave Diameter Sheave Material 6CR-118 8" Cast Iron 6NR-118 8" Nylatron 6CR-218 Adjustable Combination Floor Block Adjustable Combination Floor Blocks Used with individual T-Bar or wire guided counterweight sets Rope lock and floor block in a single unit ASTM Class 30 grey iron sheave, grooved for 3/4" rope Sealed precision ball bearings Incorporates tie off points for arbor guide wires Sheave position may be adjusted to properly tension the handline Catalog Number Sheave Diameter Sheave Material 6CR " Cast Iron 6CR " Cast Iron 6NR-855M Wire Guide Floor Block Wire Guide Floor Blocks Used with wire guide locking rail Nylatron GS sheave or ASTM Class 30 grey iron sheave, grooved for 3/4" rope Sealed precision ball bearings 12 gauge side plates fully enclose sheave Additional spacers are provided for arbor guide wire attachment Catalog Number Sheave Diameter Sheave Material 6CR-855M 8" Cast Iron 6NR-855M 8" Nylatron 6NR-118 Fixed Combination Floor Block 6CR-218 Adjustable Combination Floor Block Do Not over tension wire guides on wire guided arbors or clews. Clancy recommends a maximum tension of 75 pounds per guide. 2-10

11 T-Bar Arbors 15 Series x04 Single Purchase Arbor x04 Double Purchase Arbor Single Purchase Arbors Used in T-Bar guided systems to hold counterweight that balances the batten load Arbor tops and bottoms are fabricated 1/4" steel weldments with a bolt and spacer for handline termination Arbor tops are punched to accept 8 cables Two 3/4" steel arbor rods have three nuts at top and bottom. Each rod has a retaining collar with thumbscrew 1/4"x 3" steel back bar, with two guide assemblies comprised of UHMW plastic shoes and 3/16" steel backup plates 12 gauge steel spreader plate every 3 feet (minimum 2) 6" or 8" set centers are standard Nominal arbor length is indicated by the last two digits of the catalog number. Arbors are supplied with guide shoes for T-Bar or T-Channel guides. Roller guides are available as an option. Arbors 9 feet and longer are shipped disassembled and require field assembly. Double Purchase Arbors Same as above, with the following additions: Arbor tops are fabricated from 1/2" steel, and contain an 8-1/2" diameter ASTM A48 grey iron sheave with equal pitch diameter rope and cable grooves, tapered roller bearings, and 7 gauge side plates Arbor bottoms contain an 8" diameter ASTM A48 grey iron sheave grooved for 3/4" rope, with sealed precision ball bearings and 10 gauge side plates Catalog Number Type Arbor Width Length* Set Centers x04 to 13 Single Purchase 4-3/8" 4' 13' 6" or 8" x06 to 13 Double Purchase, 6 Line 5-1/8" 6' 13' 6" or 8" x06 to 13 Double Purchase, 8 Line 6-1/16" 6' 13' 6" or 8" * Overall length is 8" longer than the nominal length for single purchase arbors or 14-3/8" for double purchase arbors x04 Single Purchase Arbor x04 Double Purchase Arbor Insert spreader plates between counterweights at 3 foot intervals. Lock stop collars at the top of counterweight stacks. 2-11

12 Wire Guide Arbors 85 Series x04 Single Purchase Wire Guide Arbor Single Purchase Arbors Used in wire guided systems to hold counterweight that balances the batten load Arbor tops and bottoms are fabricated 1/2" steel plates with 3/8" holes for guide wires located on 15" centers Arbor tops have 7 gauge steel plates with holes for lift line terminations and bolt and spacer for the handline termination Two 3/4" steel arbor rods have three nuts at top and bottom. Each rod has a retaining collar with thumbscrew 12 gauge steel spreader plate every 3 feet (minimum 2) Catalog Number Type Arbor Width Length* x04 to 08 Single Purchase 4-3/8" 4' 8' * Overall length is 5-9/16" longer than the nominal length x04 Single Purchase Wire Guide Arbor Nominal arbor length is indicated by the last two digits of the catalog number. Attach cables to arbor tops in a pattern that minimizes twisting and allows the arbor to hang plumb. Start from the center of the arbor top and work out in both directions. Don't cross cables over each other between the arbor and head blocks. 2-12

13 Lattice Track Arbors & Guides 84 Series x04 Single Purchase Lattice Track Arbor R Lattice Track Lattice Track Arbors Lattice track systems are used for individual counterweight sets such as act curtains and fire curtains Used in single purchase lattice track guided systems to hold the counterweight to balance the batten load Arbor tops and bottoms are fabricated 1/2" steel plates with brass guides that engage the lattice track Arbor tops have 3/16" steel plates with holes for lift line terminations and bolt and spacer for the handline termination Two 3/4" steel arbor rods have three nuts at top and bottom. Each rod has a retaining collar with thumbscrew 12 gauge steel spreader plate every 3 feet (minimum 2) Catalog Number Type Width Length * x04 to 08 Single Purchase 4-3/8" 4' 8' * Overall length is 6" longer than the nominal length S Spring Bottom Bracket R Bottom Bracket Specify distance from wall to center line of guides Nominal arbor length is indicated by the last two digits of the catalog number Lattice Track Formed of two 2" x 2" x 1/4" angles opposing each other with 1/4" x 2" formed brackets alternating front and back on 2' centers. Generally bolted flat to the wall and/or structure above. Catalog Number Type R Track R Bottom Bracket S Bottom Bracket with Spring Bumper x04 Lattice Track Arbor Clancy weights are notched on alternate corners. Reverse every other counterweight in a stack to provide finger grips when loading weights. 2-13

14 Rope Locks & Counterweights R Malleable Iron Rope Lock L Locking Rope Lock 009-4X1 Counterweight Rope Lock One piece malleable iron body Two iron cams grip rope with thumbscrew adjustment for 5/8" 1" rope 9" malleable iron handle for maximum comfort and strength. Integral hole for safety padlock Vinyl coated oval locking ring Rubber bumper to quiet operation Locking version has auxiliary steel side plate holding a keyed plunger type lock to deter unauthorized usage Catalog Number RWL pounds Type R 150 Standard L 150 Locking Counterweights Used in arbors to counterbalance the weight of the batten and scenery or lights Standard weights are flame cut steel; lead weights are available on special order Opposite corners have 45 degree notches to provide finger grips 13-3/4" length, with slotted ends for 3/4" diameter arbor rods spaced on 10" centers Catalog Number Width Nominal Thickness Nominal Weight 009-4x1 4" 1" 14 pounds 009-4x2 4" 2" 28 pounds 009-6x1 6" 1" 22 pounds 009-6x2 6" 2" 43 pounds Order by total weight, not by piece. Rope locks are designed to hold a nominally balanced load. They are not designed to stop a moving load or hold an excessively out of balance load while weight is being added or removed. If the arbor must be in a temporarily unbalanced condition, tie off the arbor, or hold it with a capstan winch or block and fall. The maximum recommended working load for Clancy rope locks is within 150 pounds of neutral balance because it s difficult for operators to control any greater imbalance. 2-14

15 Locking Rails R6 T-Bar Locking Rail, Single Purchase R6 T-Bar Locking Rail Gallery R6 Wire Guide Locking Rail Locking rails support rope locks and the index cards used to identify sets. All Clancy locking rails have the following features: Rope locks and index cards are mounted on a 3"x 5"x 1/4" formed steel angle Built to withstand a 300 lb per linear foot up load (RWL) Numbered, plastic write-on erasable index cards included T-Bar Locking Rail Mounts to the stage floor Mounting stanchions are located on 5' (maximum) centers and made from 1/2" x 3" flat bar Catalog Number Type Set Centers R6 Single Purchase 6" R8 Single Purchase 8" D6 Double Purchase 6" D8 Double Purchase 8" T-Bar Locking Rail Gallery Mounted Mounts on the edge of a counterweight pit or gallery Mounting stanchions are located on 5' (maximum) centers and made from 2" steel tubing with expanded metal mesh between the stanchions Catalog Number Type Set Centers R6 Single Purchase 6" R8 Single Purchase 8" Wire Guide Locking Rail For use with wire guide sets Two angles are provided to support 855M floor blocks Two 2"x3"x1/4" angles are used as lower bumpers for counterweight arbors Mounting stanchions are located on 5' (maximum) centers and made from 1/2"x 3" flat bar and 3" channel Catalog Number Type Set Centers R6 Single Purchase 6" R8 Single Purchase 8" Clancy index cards can be marked with pencils, china markers, washable markers, etc. and cleaned with soap and water or suitable cleaner. Don t use permanent ink markers. When in doubt, try it out on the back of a card. 2-15

16 Guide Systems, Outrigger Brackets & Index Lights Steel T-Bar Guide System Aluminum T-Channel Guide System T-Bar Guide System Used to guide counterweight arbors 6" and 8" centers are standard, 4-1/2" to 12" centers are available T-Bar systems supplied complete with required T-Bar, wall battens, stop battens, splice bars, U-clips, wall knees, bolts, nuts and washers Vertical T's are pre-punched 1-1/2" x 1-1/2" x 3/16" steel members Horizontal wall battens & stop battens pre-punched 1-3/4" x 1-3/4" x 3/16" steel angle Optional 2"x 2" hardwood or hardwood with neoprene bumpers are available for stop battens Catalog Number Description T-Bar Guide System, steel Outrigger Bracket Index Light Never lubricate arbor guide tees. Lubricant will collect dust and actually increase system friction. It's also messy for technicians who work around the system and a hazard in case of fire. T-Channel Guide System Innovative, lightweight aluminum guide system for counterweight arbors Faster to install than steel T-Bar due to lighter weight, longer guide sections, and reduced number of components Fast, easy alignment of parts using movable spring nuts in the T-Channels Wall batten locations are easily changed in field 6" and 8" centers are standard, 4-1/2" to 12" centers are available Systems are supplied complete with required T-Channel, wall battens, stop battens, splices, wall knees, bolts, nuts and washers Horizontal wall battens & stop battens pre-punched 1-3/4" x 1-3/4" x 3/16" steel angle Optional 2" x 2" hardwood or hardwood with neoprene bumpers are available for stop battens Catalog Number Description T-Channel Guide System, aluminum Outrigger Bracket Used to support outrigger battens in front of the T-Bar wall Use R Pipe Batten with these brackets to form the outrigger Outrigger battens are used to support index lights or act as a scenery bumper Use on 10' maximum centers Catalog Number Description Outrigger Bracket Index Lights Used to light the locking rail, fly and loading galleries Provides even lighting for counterweight system operation with minimal light bleeding Sockets located on 24" centers, and intended for use with 40W "A" lamps Catalog Number Description Length One Circuit 5 feet One Circuit 10 feet Two Circuit 5 feet Two Circuit 10 feet 2-16