Design Features 
□The body, the bail, and the bail support are cast with special alloy steel. 
□Equipped with a hydraulic snubber assembly to protect drill pipe joints when making up/breaking out connections.  
□At the hook there is a reliable safety device. 
□It is provided with a braking device to lock up & lock out the body. 
□The primary-load-carrying parts of hook are subject to NDE test. 
□The hooks is in accordance with API Spec 8A, 8C and applied API monogram on them.  
                                              
Specifications of Traveling Blocks 
  
| 
 Modle 
 | 
 DG 90 
 | 
 DG135 
 | 
 DG 170 
 | 
 DG 225 
 | 
 DG 315 
 | 
 DG 450 
 | 
 DG 585 
 | 
 
| 
 Max. hook load    kN 
 | 
 900 
 | 
 1350 
 | 
 1700 
 | 
 2250 
 | 
 3150 
 | 
 4500 
 | 
 5850 
 | 
 
| 
 Major-hook opening                                   mm(in) 
 | 
 155(6) 
 | 
 165(6) 
 | 
 180(7) 
 | 
 190(7) 
 | 
 220(8) 
 | 
 220(8) 
 | 
 238(9) 
 | 
 
| 
 Diameter of Major-hook   
                    mm(in)                                       
 | 
 116(4 ) 
 | 
 140(5) 
 | 
 150(6) 
 | 
 160(6) 
 | 
 180(7) 
 | 
 180(7) 
 | 
 180(7) 
 | 
 
| 
 Spring travel 
 | 
 180 (7) 
 | 
 180 (7) 
 | 
 180 (7) 
 | 
 180(7) 
 | 
 200(8) 
 | 
 200(8) 
 | 
 200(8) 
 | 
 
| 
 Overall Dimension  
(L×W×H)    mm 
 | 
 2000×680 
×600 
 | 
 2200×720 
×616 
 | 
 2450×750×630 
 | 
 2545×780×750 
 | 
 2953×890×830 
 | 
 2950×890×800 
 | 
 3156×930×930 
 | 
 
| 
 Weight          kg 
 | 
 1800 
 | 
 1910 
 | 
 2020 
 | 
 2180 
 | 
 3410 
 | 
 3496 
 | 
 3900 
 | 
 
 
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