On-site machining services

Tyre grinding is a quick and efficient way to renew the surface finish of large-diameter tyres on rotating plant in situ, such as rotary kilns, dryers and Yankee dryers in the paper industry.

Our air-powered tyre grinding machine can grind tyres of any diameter. It is built for accuracy and a high stock removal rate, and is faster and more economical than grinding with a carborundum wheel or shutting the plant down to replace the tyre. In most cases the tyre can be ground while the plant is still in commission.

The machine is easily transported to site, where it is mounted on a simple frame built to suit each application.

Tyre diameter

Any diameter

Typical plant

Rotary kilns, dryers, Yankee dryers

Plant status

Usually ground while the plant is in commission

Air supply

9 bar (131 psi), 5.1 m³/min (180 cfm)

Hot tapping is the process of making access to the inside of an operational pipeline with a drill or a circular cutter, so the line can stay in service.

Applications include attaching a branch connection to the line, installing an internal probe or monitor, and redirecting flow for maintenance or repair. Our hot tap equipment is designed by engineers and is pressure tested and certified on a regular basis. For highly specialised work we work closely with an international company that leads the hot tapping field.

Line pressure

Up to 100 bar (1,450 psi), depending on tap size, line temperature and flow rate

Method

Drill or circular cutter

Drive

Pneumatic or hydraulic

Certification

Equipment pressure tested and certified regularly

Damaged, corroded or uneven flange faces are machined in place to give a flat, true sealing surface again. Our machines face full-face, raised-face and grooved flanges, and produce a gramophone (spiral serrated) finish, O-ring grooves, vertical grooves and V-grooves. The AX012 and AX630 can also cut lens ring facings.

Turned finish

Ra 1.6 to 6.3 µm (63 to 250 µin)

Polished finish

Ra 0.8 µm (32 µin); AX2872 Ra 0.8 to 1.6 µm (32 to 63 µin)

Profiles

Gramophone finish, O-ring, vertical and V-grooves, lens ring facings

Mounting

Any position; balancing kit for horizontal use on the AX2872

Air supply

7 bar (102 psi), 4.0 m³/min (140 cfm)

The Climax KM65 is a portable milling machine for keyways and other small milling jobs on site. It clamps onto the shaft with a self-aligning, self-centring V-base and cuts new keyways without the shaft being dismantled.

It can also cut motor mount slots and flats, and handle many other small milling applications.

Shaft diameter

50 to 250 mm (2″ to 9.8″)

Mounting

Self-aligning, self-centring V-base clamp

Also cuts

Motor mount slots, flats and small milled features

The Silk FM044 machines heat exchanger caps, tube sheets, keyways, grooves and divider plates, along with a variety of other applications.

The milling rail, with its support pillars, is installed in position on the face to be machined and adjusted with three screws in the base of each pillar. Where needed we make a mounting fixture to secure the rail to the workpiece. The machine works in the vertical or horizontal position.

Rail length

1,320 mm (52″)

Maximum height

660 mm (26″)

Position

Vertical or horizontal

Air supply

7 bar (102 psi), 4.0 m³/min (140 cfm)

We have a range of drilling machines driven by a 220 V power supply or by compressed air, depending on the machine used for the job.

The machines are hand-held, magnetically mounted, or secured to the workpiece with a mounting plate and fasteners. Holes that are too big for a machine are drilled as large as possible and then fly cut to the required size.

Drive

220 V electric or pneumatic

Mounting

Hand-held, magnetic base, or bolted with a mounting plate

Oversize holes

Drilled, then fly cut to size

Tapping large-diameter holes, fitting pipe extensions onto tapping handles, dealing with broken taps and tapping skew holes no longer need to be a headache. Our Norbar pneumatic tapping machine is compact and versatile.

Hole size

Up to 110 mm (4.3″) diameter

Typical work

Large holes, skew holes, holes with broken taps

Air supply

7 bar (102 psi), 4.0 m³/min (140 cfm)

The Journal Squirrel is built for re-turning large-diameter shafts and roll journals. It bolts directly to the end of the shaft and rotates around it.

A worn bearing journal can be refurbished in two ways: machine the journal undersize, shrink-fit a sleeve and machine it back to the original size, or build the shaft up with weld and machine it to size. Either way the machinery does not have to be dismantled and the part sent to a workshop.

Shaft diameter

100 to 280 mm (4″ to 11″)

Turning reach

405 mm (16″)

Repair methods

Sleeve and re-machine, or weld build-up and re-machine

Air supply

7 bar (102 psi), 4.0 m³/min (140 cfm)

Our compact, powerful portable boring bar handles blind boring and align boring in a wide range of applications. Feed and rotation are reversible, and different boring bars and tool heads can be combined to suit the job. Self-centring cones give quick alignment of the bar.

If the bar can slide into the bores and there is a place to tack weld the mounting bracket with its bearing assembly, the job can most likely be line bored in place.

Bore diameter

50 to 500 mm (2″ to 20″)

Boring stroke

Up to 360 mm (14″)

Clearance needed

About 1,100 mm (43″) to mount the drive and feed units

Set-up

Self-centring cones, reversible feed and rotation

We recondition almost any type and make of valve. Valve repair is mostly done on site, so no time or money is lost transporting valves to and from an engineering workshop. Where a valve cannot be repaired on site, we arrange the work through our partner workshops.

Valve types

Almost any type and make

Where

Mostly on site; otherwise arranged through a partner workshop

We test tubes with compressed air at any place and in any position. The equipment fits into tight spaces, and testing with air finds even the smallest leak. We can test the entire tube bundle or only an isolated area.

Test pressure

Up to 6 bar (87 psi)

Rate

Up to 4 tubes per minute, depending on tube diameter and length

Scope

Entire tube bundle or an isolated area

Tubes must be

Clean on the inside and fairly dry