Crosby Regular Wire Rope Sheave Pulley Block with Shackle or Hook - Range from 910kg to 6350kg

Western Diamond & Oval Pattern Regular Wire Rope Blocks.

Model: 

T-641-B T-642-B / RWRB-2546


  • Laser cut painted side plates (can be furnished galvanized upon request).
  • Grade 5 bolts secured with lock washers and staked nuts.
  • All sizes feature bronze bushed steel sheaves with larger bearing diameter for extended block life.
  • New style hanger for fitting attachment.
  • Available with hanger only (no fitting).
  • Meets or exceeds all requirements of ASME B30.26 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 B30.26.
  • Fitting Type: T - Hook with Latch; S - Round Pin Shackle; J - Oblong Eye; E - Swivel Shackle Ey

Diamon & Oval Wire Rope Block Types

Block Size (in.)  Fitting  Diamond Pattern with Bronze Bushed Steel Sheaves  Oval Pattern with Bronze Bushed Steel Sheaves 
641-B
Single
642-B
Double
661-B
Single
662-B
Double
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

Metric Specifications

Block Size (in.) Sheave Size (mm)   Wire Rope Size (mm) Working Load Limit (t)*  Weight Each (kg) 
Outside Diam.  Rim Thickness 641
661
Single
 642
662
Double
641
661
Single
642
662
Double
4 102 19.1 10 0.91 1.82 3.6 5
6 152 25.4 10 2.72 3.63 6.8 9.5
8 203 31.8 16 3.63 5.44 12.7 18.6
10 254 31.8 16 3.63 6.35 17.2 27.2

*Ultimate Load is 4 times the Working Load Limit

Crosby-catalogue-page-number-342-349.pdf

Product Warnings

(approx. 0.5Mb)
crosby-catalogue-page-358.pdf

Crosby catalogue page 358

(approx. 0.2Mb)
Model
Part N° Block Size Fitting Guide Price Quantity
2546-T1847
—
4 T Quote Required
2546-T1848
781611
6 T Quote Required
2546-T1849
781639
8 T Quote Required
2546-T1850
781657
10 T Quote Required
2546-T1851
—
4 S Quote Required
2546-T1852
785902
6 S Quote Required
2546-T1853
785920
8 S Quote Required
2546-T1854
785948
10 S Quote Required
2546-T1855
782102
6 J Quote Required
2546-T1856
782120
8 J Quote Required
2546-T1857
782148
10 J Quote Required
2546-T1858
782004
6 E Quote Required
2546-T1859
782022
8 E Quote Required
2546-T1860
782040
10 E Quote Required
Add to Quote Basket   ?  
  • Laser cut painted side plates (can be furnished galvanized upon request).
  • Grade 5 bolts secured with lock washers and staked nuts.
  • All sizes feature bronze bushed steel sheaves with larger bearing diameter for extended block life.
  • New style hanger for fitting attachment.
  • Available with hanger only (no fitting).
  • Meets or exceeds all requirements of ASME B30.26 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 B30.26.
  • Fitting Type: T - Hook with Latch; S - Round Pin Shackle; J - Oblong Eye; E - Swivel Shackle Ey

Diamon & Oval Wire Rope Block Types

Block Size (in.)  Fitting  Diamond Pattern with Bronze Bushed Steel Sheaves  Oval Pattern with Bronze Bushed Steel Sheaves 
641-B
Single
642-B
Double
661-B
Single
662-B
Double
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

Metric Specifications

Block Size (in.) Sheave Size (mm)   Wire Rope Size (mm) Working Load Limit (t)*  Weight Each (kg) 
Outside Diam.  Rim Thickness 641
661
Single
 642
662
Double
641
661
Single
642
662
Double
4 102 19.1 10 0.91 1.82 3.6 5
6 152 25.4 10 2.72 3.63 6.8 9.5
8 203 31.8 16 3.63 5.44 12.7 18.6
10 254 31.8 16 3.63 6.35 17.2 27.2

*Ultimate Load is 4 times the Working Load Limit

Crosby-catalogue-page-number-342-349.pdf

Product Warnings

(approx. 0.5Mb)
crosby-catalogue-page-358.pdf

Crosby catalogue page 358

(approx. 0.2Mb)
Model
Part N° Block Size Fitting Guide Price Quantity
2546-T1847
—
4 T Quote Required
2546-T1848
781611
6 T Quote Required
2546-T1849
781639
8 T Quote Required
2546-T1850
781657
10 T Quote Required
2546-T1851
—
4 S Quote Required
2546-T1852
785902
6 S Quote Required
2546-T1853
785920
8 S Quote Required
2546-T1854
785948
10 S Quote Required
2546-T1855
782102
6 J Quote Required
2546-T1856
782120
8 J Quote Required
2546-T1857
782148
10 J Quote Required
2546-T1858
782004
6 E Quote Required
2546-T1859
782022
8 E Quote Required
2546-T1860
782040
10 E Quote Required
Add to Quote Basket   ?  

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