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Catalog provided courtesy of The Crosby Group, Inc.
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Page 308
 
  • All Blocks above 4" have pressure lube fittings.
  • Oval Pattern Blocks have crimped side plates to reduce wear and chaffing of rope.
  • Blocks can be furnished galvanized upon request.
 

SEE APPLICATION AND WARNING INFORMATION
Para Español: www. thecrosbygroup.com On Pages 290-297
 

 

T-641-B
SINGLE

  

 

 

 

 

 

 

Diamond
Pattern
2 Sheave
Not Shown

  

T-661-B
SINGLE

  

S-662-B
DOUBLE

Block Size
(in.)		 Sheave Size
(in.)		 Wire Rope Size (in.) Working Load Limit *
(tons)		 Weight Each
(lbs.)
Outside Diam. Rim Thickness 641
661
Single		 642
662
Double		 641
661
Single		 642
662
Double
4 4 3/4 3/8 1 1 -1/2 8 11
6 6 1 3/8 2-1/2 3 15 21
8 8 1-1/4 5/8 3-1/2 6 28 41
10 10 1-1/4 5/8 4 7 38 60
* Ultimate Load is 4 times the Working Load Limit.

Block Size
(in.)		 Fitting Diamond Pattern Oval Pattern
Bronze Bushed
Iron Sheaves		 Bronze Bushed
Iron Sheaves
641-B
Single
Painted		 642-B
Double
Painted		 661-B
Single
Painted		 662-B
Double
Painted
4 T 781586 782193 791183 791593
6 T 781611 782219 791218 791619
8 T 781639 782237 791236 791637
10 T 781657 782255 791254 791655
4 S 785886 786199 795884 796197
6 S 785902 786206 795900 796204
8 S 785920 786224 795928 796222
10 S 785948 786242 795946 796240
6 J 782102 782503 791502 791904
8 J 782120 782521 791520 791922
10 J 782148 782549 791548 791940
6 E 782004 782406 791307 791708
8 E 782022 782424 791325 791726
10 E 782040 782442 791343 791744
For Reeving Information See Page 294, General Information Section.

 

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