BQ Surface Drilling Overshot
PEERCHEER offers compact BQ Ezy lock overshot for use with BQ/BTW core barrel. BQ EZY lock overshot is designed to protect against accidental release of BQ/BTW core barrel. This Ezy Lock Overshot is ideal for surface applications when hoisting above ground.
BQ Ezy lock overshot Features:
• Ezy Lock Sleeve provides a quick, one-handed rotation of the sleeve to lock the lifting dogs.
• Quick Release Safety Pin locks the overshot head to the spearhead point.
• Threaded connection between jar staff and overshot head.
• High strength alloy steel jar staff with increased diameter and fail safe stop.
BQ Ezy lock overshot Features:
• Ezy Lock Sleeve provides a quick, one-handed rotation of the sleeve to lock the lifting dogs.
• Quick Release Safety Pin locks the overshot head to the spearhead point.
• Threaded connection between jar staff and overshot head.
• High strength alloy steel jar staff with increased diameter and fail safe stop.
Product Details
Parameter
BQ surface drilling overshot standard parts：
1-BQ Overshot Eye Bolt
2-BQ Overshot Cable Swivel Collar
3-BQ Overshot Thrust Bearing
4-BQ Overshot Castle Nut
5-BQ Overshot Cotter Pin
6-BQ Overshot Grease Fitting
7-BQ Overshot Cable Swivel Body
8-BQ Overshot Jar Staff
9-BQ Overshot Jar Tube
10-BQ Overshot Hex Nut
11-BQ Overshot Washer
12-BQ Overshot Cap
13-BQ Overshot Spring
14-BQ Overshot Sleeve
15-BQ Overshot Compression Spring
16-BQ Overshot Ball
17-BQ Overshot Head
18-BQ Overshot Compression Spring
19-BQ Overshot Lifting Dog
20-BQ Overshot Plain Pin
21-BQ Overshot Spring Pin
22-BQ Overshot Locking Pin
23-BQ Overshot Set Screw
24-BQ Overshot Locking Sleeve
NOTE：
(1)BQ Overshot with roller bar type is also available
BQ Surface Drilling Overshot
| BQ Nonimal Parameter | mm | Inches |
| BQ Hole Diameter(approx.) | 60.0 | 2.362 |
| BQ Core Diameter(approx.) | 36.5 | 1.437 |
| BQ Core Bit Set OD(approx.) | 59.5 | 2.343 |
| BQ Core Bit Set ID(approx.) | 36.5 | 1.437 |
| BQ Reaming Shell Set OD(approx.) | 60.0 | 2.362 |
