Description
PBM-4, PBM-6 and PBM-16
The basis of the PBM series is formed by the new PBM-4 with clamping range from 1/2” to 4” (20 mm – 116 mm outside diameter). The number in the title of the machine refers to the maximum clamping range in inches for that particular machine. For example, the PBM-16 has a clamping range up to 16” (410 mm). A complete overview with specifications of all PBM machines can be found in the middle of this brochure.
MAKING WELD PREPARATIONS IS A MATTER OF SECONDS
The performance determines the choice of a machine. Th. Wortelboer BV supplies the fastest working machine for machining (thick-walled) pipes made from duplex steel, stainless steel or hasteloy, for example. The minimal handling of materials required and the very short machining time make the PBM end preparation machines to some of the fastest on the market.
SELF-CENTRING PRISM-CLAMP
A self-centring prism-clamp holds the pipe firmly in place. The clamp can be manually opened and closed rapidly using a large ratchet. The PBM-24 and PBM-30 have an electric drive as standard for the prism-clamp.
LARGE CHIP TRAY
The large chip tray has a separator to filter the chips out of the coolant. All PBM machines have a built-in pump for cooling fluid.
POWERFULL ELECTRIC MOTORS
The more than adequate electric motors of the PBM – 4 and PBM-6 have two speeds and can be operated very simply. As well as the two speed motor, the PBM-12 and PBM-16 also have a gearbox allowing simple switching to a total of four speeds.
PBM-24 and PBM-30
The PBM-30 pipe end preparation machine is (at present) the largest in the range of PBM machines. Because of the size of the machine and the weight of the clamp both the PBM-24 and the PBM-30 are supplied standard with both an electrically driven feed and an electrically operated clamp.
The insert holders of the largest PBM machines are suitable for carbide inserts with a cutting length of 45 mm. Thanks to the robust way in which these heavy PBM machines are constructed a feed of no less than 0.4 mm (or even more) per revolution is not the slightest problem. This reduces the machining time to a minimum.
MULTIFUNCTIONAL CONTROL PANEL
The control panel has all the important functions for operating the machine: start machine – stop machine – coolant pump on / off – pulse action tool head – rapid feed left – rapid feed right – start feed – feed speed control – stop feed – safety cap open / close (pneumatic).
ELECTRICALLY DRIVEN PRISM-CLAMP
The PBM-24 and PBM-30 pipe end preparation machines are fitted with electrically driven prismclamps for which the clamping force can be adjusted by a potentiometer. One push on the button is enough to open or close the clamp. The control panel for the clamp is positioned next to the clamp on the side where the material is fed in. The control lamp lights on when the set maximum clamping force has been reached.
INSERT HOLDER SET FOR THE PBM-24 AND PBM-30
This insert-holder set consists of four insert-holders (see the photo) each with one or two carbide inserts. Once set it is possible to machine all pipe sizes within the range of the machine without continuously having to reset the cutting tools. More details on page 10. The cutting insert holder sets are supplied standard as a 30° or a 37.5° model (others optional).
CONTINUOUSLY VARIABLE FEED
The standard electrically operated feed is continuously variable by means of a potentiometer situated on the control panel. This allows the feed to be regulated very easily and efficiently.