Oster 8R “Rapiduction” - Factory Floor 8” Capacity Pipe Threading Machine


Oster 8R

Standard Pipe Range  2.5" to 8"
Standard Bolt Range  2" to 6"


General Specifications  
Spindle Speeds, Variable  7-9-14-21-26-42
Carriage Travel  25"
Length  98.5"
Width  50"
Height  62.5"
Net Weight  7640 lbs.
Shipping Weight  7940 lbs.

The Finest in Quality, Design and Performance for Thread Machines

You'll see from the heavy massive construction, that the 8R is built to last. Hand scraped ways and bearings are one example of the craftsmanship built into this fine machine. In addition to the massive construction, the 8R is designed to save hundreds of dollars in costly set-up time. Two additional clutch levers - one front and one rear - in conjunction with the rear flange gripping chuck, facilitates the making and breaking of fittings.

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Never a Diehead Change for the Oster 8R Pipe Threading Machine!

Just set to size and thread! From the 2-1/2" Smallest Size In The Range To The Largest 8". No time consuming set-up whether you cut one thread- or a thousand -on your Oster No. 8R. A single die-head threads all sizes of pipe from 2-1/2" through 8"... without change of head, holders or dies. (Uses Symbol 8R Dies.)

8R Diehead

Radial Dies

M2 Tool Steel Dies are firmly held in durable steel holders. One set threads all sizes of same pitch and taper.

8R Die Holder

Accessories for the Oster 8R Threading Machine

Victaulic Type Grooving Tool Attachment

These Tools automatically insure correct depth, width and distance from pipe end for Victaulic Grooving applications. Available as extra equipment with the No. 8R Machine.

8T Machine

A Model 8T version is also available for precision A.P.I. threading. This machine incorporates a leadscrew, a taper attachment to give the correct taper rate for the pipe to be threaded and a die head utilizing tangential type chasers.

Additional Accessories for the 8R Threading Machine

No. 6 Nipple Chuck, Adjustable Pipe Supports, OSTO – Oster’s Superior Threading Oil

Standard Equipment Furnished

  • Motor - 7.5hp., 1200 rpm., 3 phase, 60 Hz. 230 or 460 volts. (Motors of other specifications available.)
  • Motor Control - REVERSING magnetic starter and push button station, with safety 120V control circuit at machine controls.
  • Dieheads - ONE, radial, quick-opening type, adjustable to handle all sizes in standard range.
  • Die Holders - ONE set to cover standard pipe range.
  • Dies - ONE set to cover standard pipe range - 2-1/2" to 8", HIGH SPEED STEEL (Symbol 8R).
  • Reamer - Swing-type.
  • Cut-Off Device - Lathe style, blade type cut-off tool with double V block centering device.
  • Chamfer Tool - Lathe type, mounted in cut-off block.
  • Front Chuck - Powerful, Three-jaw, universal gripping.
  • Rear Chuck - Three flange jaw, universal gripping.
  • Gage - Direct reading DRUM type, mounted on carriage handwheel.
  • Oil Pump - Internal gear type - automatic reversing.
  • Oil - Thread cutting, THIRTY gallons - Oster "BESTOIL".

Watch a Video of the Oster 8R Threading Machine

Custom Applications or Technical Questions – Oster is here for you!

When you call Oster Manufacturing there is always a human being on the other end of the line. We have skilled technical and sales experts on hand to take your call. If you’re interested in a machine or tooling for a non-standard threading application we are happy to consult with you on the project and come up with custom engineered solutions to make your project idea a reality. We can make a variety of custom tooling for special projects and keep them in stock for you so you never have to wait when it comes to a difficult project.

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