Electric Needle Vibrator – 3HP Single Phase, 2.2kW Drive

The Jamshedji 3 HP single-phase electric needle vibrator is the mains-powered drive in the range — a 2.2 kW electric concrete vibrator that runs on ordinary single-phase site power and drives a flexible-shaft poker needle to consolidate freshly poured concrete. With no engine, no fuel and no exhaust, it is the choice for enclosed, indoor and residential pours where a power supply is available. Weight 13 kg, 13.5 A draw, 2,840 rpm.

Key specifications at a glance

• Motor: single-phase electric, 2.2 kW (3 HP)
• Current: 13.5 A
• Speed: 2,840 rpm
• Power supply: ordinary single-phase (220 V)
• Weight: 13 kg
• Construction: stainless steel and plastic

Why concrete has to be vibrated

Freshly poured concrete is full of trapped air. Left in place, those voids become honeycombing and weak points that cut the strength of the finished pour and expose the reinforcement to corrosion. A needle vibrator is dropped into the wet concrete and its high-frequency vibration liquefies the mix momentarily, letting the air rise out and the concrete flow tight around the bars and into the corners of the formwork. Proper vibration is the difference between concrete that reaches its design strength and concrete that does not.

Why electric, and where it fits

The choice between an electric and a petrol drive comes down to one thing: is there power on site? Where there is, an electric drive is the better tool. It has no engine to fuel, service or start; it produces no exhaust, so it is safe to run in enclosed spaces, basements and indoor pours where a petrol engine cannot; it is quieter; and at 13 kg it is noticeably lighter than the 20 kg petrol drives, so it is easier to move around a slab.

It runs on ordinary single-phase supply — the same power available at most building sites and residential jobs — so it does not need a three-phase connection. Where there is no power at all, or on large remote pours, the petrol drives are the answer instead.

Which drive for the site

Choose the drive by power supply and the scale of the pour.

• 7.5 HP petrol drive — the most powerful, for the largest slabs and mass foundations on sites without power.
• 6 HP petrol drive — cable-free petrol power for general site work.
• This 3 HP single-phase electric drive — where a mains supply exists and no exhaust is wanted: indoor, enclosed and residential pours.
• 950 W and 1300 W portable vibrators — lighter hand-carried electric units for columns, small pours and confined spaces.

Matching the needle to the pour

The needle is chosen separately from the drive so you can match diameter and hose length to the job. A bigger needle drives more energy over a wider radius for mass concrete; a smaller needle fits between congested reinforcement and into narrow sections:

• 35 mm × 6 m — narrow sections and congested rebar
• 50 mm × 4 m and 50 mm × 6 m — general slabs and beams
• 60 mm × 4 m and 60 mm × 6 m — heavier mass concrete
• 70 mm × 6 m — the largest pours

Applications

Indoor and basement pours, residential and commercial slabs, columns and walls, and any concrete work where a power supply exists and an exhaust-free, quieter drive is preferred.

Full specifications

Buying, GST and delivery

• Supplied with a GST invoice (18% GST — CGST + SGST within Maharashtra, IGST interstate), ITC eligible
• Needles sold separately — tell us your pour and we will recommend the diameter and length
• Sold outright — Jamshedji Constro Equip does not rent or hire equipment
• Dispatched F.O.R. Pune to sites across India, plus export to Bangladesh, UAE, Kenya, Tanzania, Sri Lanka and Nepal
• Backed by a manufacturer founded in 1983, ISO 9001:2015 and MSME/Udyam registered, with 5,000+ clients

Frequently asked questions