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CAT CLASS: HQ-10090

Up to 1.5 in Concrete Vibrator

The Up to 1.5 in Concrete Vibrator is the smallest diameter class in the concrete vibrator ladder, designed for placement work where space is severely limited. This size is specified for thin walls, columns, and congested rebar arrays where the 1.5–2.25 in head diameter of the next class up simply will not fit between reinforcing steel or within narrow forms.

51
Models
12
Brands
Concrete Vibrator

Cat classes

Pick a size class — capacity and reach differ across the range.

All sizes
51 models
Up to 1.5 in
Up to 1.5 in
1 models
1.5-2.25 in
1.5-2.25 in
7 models
2.25+ in
2.25+ in
3 models
Other sizes
Other sizes
40 models

Key specifications

SpecificationTypical rangeWhat it means
Head diameterUp to 1.5 inSmallest vibrator head class, enabling access in tight reinforcement spacing
Operating frequency10,000–12,000 VPMHigh-frequency vibration typical of small-diameter heads for consolidating concrete in confined areas
Shaft length6–10 ft (1.8–3.0 m)Sufficient reach for most column and wall forms while maintaining maneuverability in congested conditions

How to choose

This size is the correct choice when the physical constraints of the pour — narrow wall thickness, tight rebar spacing, or small column dimensions — prevent the use of a larger head. If the form cavity is wide enough to accept a 1.5–2.25 in Concrete Vibrator head and reinforcement spacing permits, the next size up will consolidate concrete faster and over a larger radius of action. For most slab, footing, and general placement work, the 1.5–2.25 in or 2.25+ in Concrete Vibrator classes are more efficient; this smallest class is reserved for situations where access, not throughput, drives the specification.

What this size handles
  • Thin architectural concrete walls with minimal cover over rebar
  • Heavily reinforced columns with closely spaced ties and longitudinal bars
  • Precast element cores and narrow pockets
  • Congested beam-column joints in structural frames
  • Small-diameter drilled piers and caissons
  • Repair pours in existing structures with limited access

Safety & operation
  • Prolonged operation exposes personnel to hand-arm vibration; work-rest cycles reduce cumulative exposure
  • Keep vibrator head fully immersed in plastic concrete during operation to prevent air entrainment and segregation
  • Avoid contact between energized head and reinforcing steel or formwork to prevent damage and honeycombing
  • Maintain clear egress routes when working in deep forms or confined column forms

Transport & logistics
  • Hand-portable; unit typically weighs less than 30 lb with motor and shaft
  • Transported in service vehicles or alongside other concrete finishing tools without dedicated securement

Power & supply
  • Electric models require 115V or 230V single-phase on site, depending on motor specification
  • Pneumatic versions operate on compressed air at 90 PSI, supplied by a portable compressor or site air system

Frequently asked
When is this size necessary instead of a larger vibrator?
This class is specified when rebar spacing, wall thickness, or column dimensions physically prevent insertion of a 1.5 in or larger head. If a larger head fits, it will consolidate concrete more efficiently.
What rebar spacing typically requires this smallest head diameter?
Reinforcement clear spacing of 2–3 inches or less often necessitates an up-to-1.5 in head, though access also depends on bar size and configuration.
Can this size handle slab or footing pours?
Physically capable, but the small radius of action makes it inefficient for open flatwork. The 1.5–2.25 in or 2.25+ in classes are standard for slabs and footings unless obstructions limit access.

Related equipment

1.5-2.25 in Concrete Vibrator 72.25+ in Concrete Vibrator 3

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Weber 1

Sources

Every specification is verified against the manufacturer's published data, with the source linked for reference.

webermt.com ↗

Up to 1.5 in Concrete Vibrator

1 models · Every spec cited to source