Mufle / Carlige industria navala Crosby®
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N-411-B Western Standard Steel Blocks



Blocks for Synthetic Fiber Rope with loose swivel hooks
  • These blocks are built to carry the increased loads of synthetic fiber ropes.
  • All hooks are heat-treated alloy steel.
  • You can now use a smaller size rope, and in turn, a smaller block, providing capacities which were previously not possible.

 

Block

Size

(in.)

Fitting
411 B*

Stock No.

412 B*

Stock No.

413 B*

Stock No.

4

S

755105

755301

755506

6

S

755123

755329

755524

4

N

757103

757309

757504

6

N

757121

757327

757522

* Bearing Code: B-Self Lubricating Bronze Bushed


Block Size (in.)

Fitting

Sheave Size (in.)

Synthetic Rope Size (in.)

Working Load Limit

(lbs.)*

Weight Each (lbs.)

Outside Diameter

Rim Thickness

Center Pin Dia.

Single

Double

Triple

Single

Double

Triple

4

S

2.25

.62

.38

1/2

2000

3000

3000

3.00

4.00

6.00

6

S

3.50

1.00

.50

3/4

3000

7000

8000

6.25

10.00

14.00

4

N

2.25

.62

.38

1/2

2000

3000

3000

3.00

4.00

6.00

6

N

3.50

1.00

.50

3/4

3000

4000

6000

6.25

10.00

14.00

* Ultimate Load is 4 times the Working Load Limit.