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Line boring · Batala, Punjab

Line Boring Machine

Name: Line Boring Machine
Brand: Paras Exports

Portable line boring and bore welding machines, 35 to 220 mm

Servo driven portable borers that go to the job, with bore welding on the same frame. Restore worn pin bores in excavator booms, loader linkages, crusher housings and structural joints where they stand — no dismantling, no crane, no transport.

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35–220 mmBore range

0–200Bar speed, r/min

5 ft & 2.5 ftBars supplied

Bore weldingSame frame

The machine

Machine photographs

Machine manufactured by Paras Exports, Batala

More views

Close-ups of the headstock, gearbox, tooling and controls are available on request, with a short video of the machine running.

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The range

Two models

Both are portable, servo driven on rotation and feed, and set up on the work itself. Each is supplied with two boring bars — 5 ft and 2.5 ft — which can be used separately or joined depending on how much room there is at the joint.

PARAS EXPORTS portable line borer

PARAS-45 · PARAS-50

Model	PARAS-45	PARAS-50
Boring bar diameter	45 mm	50 mm
Boring bars supplied	45 mm — 5 ft and 2.5 ft	50 mm — 5 ft and 2.5 ft
Minimum bore, standard	55 mm	55 mm
Minimum bore, with 30 mm bar	35 mm	35 mm
Maximum bore	220 mm	220 mm
Drive and feed
Boring bar speed	0–200 r/min	0–200 r/min
Speed control	Stepless	Stepless
Rotation	Forward and reverse	Forward and reverse
Feed	Servo driven, set from the panel	Servo driven, set from the panel
Boring motor	2.3 kW servo	3 kW servo, 220 V
General
Facing tool	—	Available
Mounting	Spherical bearing plates	Spherical bearing plates
Host weight	50 kg	30 kg

Supplied with: two boring bars, bearing plates and clamps, tool holders and cutting tools.

Boring bars

Bar	Length	Machine	Supply
45 mm	5 ft	PARAS-45	standard
45 mm	2.5 ft	PARAS-45	standard
50 mm	5 ft	PARAS-50	standard
50 mm	2.5 ft	PARAS-50	standard
30 mm	5 ft	either model	optional, bores from 35 mm

Optional at extra cost

The other half of the repair

Bore welding attachment

Machining a worn bore true makes it round again, but it also makes it bigger. Bore welding builds the diameter back up first, so the joint returns to its original size and takes the original pin. The welder mounts on the same frame as the boring machine, so one setup does both jobs without moving the work.

Bore welder

Fits the boring frame

Specification	PARAS EXPORTS bore welder
Weldable bore diameter	40–300 mm
Welding stroke	200 mm
Weld patterns	Surface, skip and reverse-skip welding
Wire feed	Through the MIG welding machine
MIG welding machine	Not included, supplied at extra cost
Mounting	Fits the same frame as the boring machine
Weight	200 kg complete boring/welding set

Weld then bore, one setup

The welding head fits the boring frame. Build the bore up, swap heads, machine it true — without breaking the alignment you spent time setting.

Back to the original pin size

Boring alone leaves the bore round but oversize, so you fit a bush or an oversize pin. Welding first means the joint takes the pin it was built for.

MIG machine is separate

The attachment feeds and positions the wire; the welding power comes from a MIG machine, which we can supply at extra cost or you can use your own.

Where it works

Typical jobs

Anywhere a pin runs in a housing and has worn oval. The machine goes to the work, so the plant stays where it is.

No dismantling

Clamps to the work in place. No crane, no transport, no stripping the machine down to get at the joint.

Servo on both axes

Rotation and feed are both servo driven and set from the control panel, so the cut starts gently and holds its rate through an interrupted bore.

One man portable

Around 50 kg, so the kit reaches the job on a truck and gets carried to the joint by hand.

Complete kit

Two bars, bearing plates, clamps, tool holders and cutting tools supplied together, ready to work.

Delivered across India

We arrange transport from Batala to your site, so you are not chasing a transporter yourself.

One year warranty

Covered against technical fault for a full year from delivery, on every machine we supply.

Support that answers

Setup and alignment questions settled the same day over video call with someone who has done the job.

Freight is charged at actual. Bore welding attachment, MIG welding machine, facing tool and the 30 mm bar are quoted separately.

Before you enquire

Line boring questions

Why bore on site instead of removing the part?

Because removing a boom, a bucket linkage or a crusher housing costs more in crane hire, transport and downtime than the repair itself. A portable line borer clamps to the work where it stands, so the machine goes to the job rather than the job coming to the machine.

What does line boring actually fix?

Worn pin bores. Over time a pin and its housing wear oval, the joint goes slack and the machine loses accuracy. The bore is machined true and oversize, a bush or weld build-up restores the diameter, and the joint is back to specification.

Can it weld as well as bore?

Yes, with the bore welding attachment, and this is usually the point of buying the machine. Boring alone makes a worn bore round but oversize, so you then need an oversize pin or a bush. Welding builds the diameter back first, so the joint returns to its original size and takes the original pin. The welder fits the same frame, so one setup does both.

Do I need the welder, or will boring alone do?

If you are happy to fit a bush or an oversize pin, boring alone is enough. If the pin size has to stay standard, or there is no room for a bush, you need the welder. Most workshops that buy the borer end up wanting both.

How is it powered and mounted?

Servo motors drive both the rotation and the feed, set from the control panel, and the bar is supported in spherical bearing plates clamped or tacked to the work. Setup and alignment is the skilled part of the job — the cut itself is straightforward once the bar runs true.

Which model do I need?

Both cover 55 to 220 mm as standard. The PARAS-50 has the heavier 3 kW motor and takes the facing tool, so it is the one for larger and harder work. For bores below 55 mm, add the 30 mm bar and accessories, which brings the minimum down to 35 mm. Above 220 mm, tell us the size and we will confirm.

What boring bars come with it?

Two as standard, in the bar diameter of that machine — the PARAS-45 comes with 45 mm bars and the PARAS-50 with 50 mm bars, each in 5 ft and 2.5 ft. The short bar is for tight joints where there is no room to pass a long bar through. A 30 mm bar in 5 ft is available separately for either machine, for bores down to 35 mm.

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Specifications are subject to change without notice as machines are continuously improved. Dimensions shown are nominal. Please confirm the final specification on your order acknowledgement.