Upgrades & Engineered solutions

6250 Top drive for ITH production drills

Our new Top drive offers less downtime with longer maintenance intervals for improved productivity.

Description

Sandvik has developed a new top drive based on years of experience and feedback around the current 6230 design. Structural, wear and longevity specifications were set with the highest load case scenario in mind (up hole V30 drilling application). The design was followed up with stress analysis (FEA), bench wear tests and practical in field testing on the Sandvik DU412i.
Our new Top drive offers less downtime with longer maintenance intervals for improved productivity. With the ability to check the oil level in both up and down position and a bolt on swivel making in field maintenance and repairs faster and easier to perform.
Operating costs will be drastically reduced due to the new design with heavy applications such as V30 raise drilling.
Advantages

Larger tapered roller bearings
Interlocking groove on top and middle housing to ensure bearing alignment.
Orings for sealing
Lift points
Upgraded top and bottom bolted connections to 3/4UNC Gr12 twelve-point bolts.
Increased thickness of lower bearing end plate
New pinion lock design and location
Easier oil fill port
Replaceable composite sleeve for splined piston bore of driveshaft
Removable rotary seal carrier
Added seal to internal Saver sub/driveshaft connection
Newly designed bolt on air swivel
Customer values

Increased capacity and wear life
No deflection of driveshaft when side loading during approved applications.
Eliminates need for gasket and sealant during assembly
Maintained preload while drilling in heavy load applications such as V30.
Elimination bent / broken pinion locks
Pinion locks installed from bottom eliminating the need to remove motors for installation.
Easy to check and fill oil in more positions including inverted.
Increases service life of the top drive
Increased service life and operating efficiency of splined piston
Easier Seal replacement
Eliminate blow by across saver sub threads preventing corrosion of threads for easier saver sub removal.
Faster, easier, and safer air swivel removal.
Longer lasting air swivel

Product specifications

Technical specifications

Application area	Lifecycle cost improvement
Underground drill rigs & Bolters	Cubex 5200 / Sandvik DU211 / Sandvik DU311 / Cubex 6200 / Cubex Orion / Cubex Pegasus / Cubex Aries / Sandvik DU311-T / Sandvik DU411 / Sandvik DU431