This product is used for the following applications:

• General concreting
• Concreting on over-congested reinforced worksites

• Features

  The high-frequency 48 V series of spiral internal vibrators, with the surface of their vibrating body with a concave spiral groove, are for the inside of concrete. There are four standard models: HBM40AXS (6m) and HBM50AXS (6m), which are the old models with round head tips on them, and HBM40AXS-R (6m) and HBM50AXS-R (6 mm), tipped with a rubber head.
  Spiral internal vibrators are small, powerful concrete vibrators characterized by their spiral concave groove in the surface of their vibrating body to maximize the surface of contact with freshly mixed concrete, thereby increasing contact resistance with the concrete to increase vibration transmission efficiency, and by the clockwise and counterclockwise revolution of their switch at hand that allows workers to select a direction of vibration transmission.
  The clockwise revolution of the vibrator motor rotor is expected to level bumps of masses of freshly mixed concrete. The counterclockwise revolution is, on the other hand, expected to push the concrete to the farthest corners of the rebars with its downward thrust force, thereby propagating vibration to faraway locations and, when pulled up, to propagate air bubbles to be easily discharged upwards. When the vibrating body has bitten into a rebar, too, workers have a higher possibility of being able to collect it by using different directions of revolution according to the situation. This is advantageous in that it is expected to prevent materials from being left in place.
  The backdrop of the development of these models is the trend these days toward growing numbers of over-congested rebar designs in concrete structures, resulting in difficulty in concreting and compaction, which is a factor against concrete strength. In response to these complaints from workers on construction sites, we have pursued vibrators capable of densely compacting concrete with high working efficiency even in cramped regions with rebars arranged very densely. These models are a result of our joint research with a large general contractor.
  (Patents pending.)
  *Power can be supplied by conventional high-frequency inverters and high-frequency generators.

  The effect of spirals

  The presence of a spiral convex groove in the surface of the vibration unit of the concrete vibrator increases the contact area of freshly mixed concrete with the vibrating unit. This, together with physical engagement, increases contact force with freshly mixed concrete, thereby transmitting vibration energy.

  

  The effect of revolution direction

  The use of the surface shape of the spiral concave groove, in combination with the functions of clockwise and counterclockwise revolution, controls the direction of vibrating force, thereby displaying secondary effect. The switchover of the direction of motor revolution with the switch at hand is effective when revolved clockwise in breaking and leveling bumps of freshly mixed concrete when applied. When pulled up, it is expected to effectively facilitate the upward discharge of air bubbles. When revolved counterclockwise, the unit is expected to produce a downward thrust force, pressing the freshly mixed concrete to the farthest corners of the rebars, propagating the vibration to faraway locations. To check which way the product is vibrating, workers can do so directly with his hands by holding the vibrating body gently with his right hand as shown in the figure. If his forefinger moves rightward, the motor rotor should be revolving clockwise. If leftward, counterclockwise. In inspecting with the floor surface, workers can apply the vibrating tip to the floor. The vibrating body will then move to the left or right. If it moves to the right, the motor rotor should be revolving clockwise. If left, counterclockwise.

  

  

  

  The effect of preventing left-in-place material

  The switch at hand comes equipped with functions of clockwise and counterclockwise revolution. If, during concreting, the vibrating unit is caught by a rebar, the unit becomes more likely to collect the material by using the force of the vibrating unit trying to float, hopefully resulting in preventing the material from being left in place.
  Note: If the vibrating unit is caught by several rebars, it can physically not be pulled out.

  Tipped with an old round head and a rubber head

  Round head tip: The tip is so shaped as to reduce dispersions of freshly mixed concrete when pulled or inserted into a mass of concrete. The tip is also so shaped as to allow the void formerly occupied by the vibrator to be neatly filled up after the vibrator goes out.
  Rubber head tip: The use of a rubber head prevents noise from being generated in concreting by the vibrator tip touching a mold or rebar during concreting, and prevents damage and other inconveniences from being generated by a mold, rebar, or tile from touching the tip.

  

  Eco-friendly products

  The HBM series are eco-friendly. Cables are particularly eco-friendly, using environmentally friendly material. Cables used in HBM have successfully been reduced in weight by 10%.(From our earlier models.)
  *Environmentally friendly materials do not include chlorine or other halogen-based element that may generate harmful substances when incinerated or buried in landfill or a lead component that threatens to harm the human body. Materials used are easy to recycle.

  

  Easy to maintain

  With its rotor integrated with its vibration shaft, the machine is now easy to maintain. Moreover, the bearings are lubricated not with oil but with grease, which obviates the need for controlling lube or oil seal.

  Using a plug with new functions

  Burns in the motor due to the imperfect contact of the plug are reduced by using a super-tough pin in the developed EP plug. The super-tough pin is semi-permanently elastic, not causing imperfect contact in the plug.

  

  Reducing vibration at hand

  The vibration balance of the HBM is adjusted to minimize vibration at hand. Moreover, the new hose absorbs some of the vibration, thereby reducing vibration at hand.

  Specification

  HBM-AXS / HBM-AXS-R

  Model	Output (W)	Voltage (V)	Current (A)	Frequency (Hz)	Total length (mm)	Head length (dia×length) (mm)	Hose length (dia×length) (mm)	Weight (kg)
  HBM40AXS	250	48	5.5	200/240	6464	43 × 310	33 × 6000	11.7
  HBM40AXS-R					6509	43 × 355		12.0
  HBM50AXS	400		9.0		6514	52 × 360	36 × 6000	15.7
  HBM50AXS-R					6554	52 × 400		16.0

  (Imperial System)

  Model	Output (W)	Voltage (V)	Current (A)	Frequency (Hz)	Total length (ft)	Head length (dia×length) (in×ft)	Hose length (dia×length) (in×ft)	Weight (lb)
  HBM40AXS	250	48	5.5	200/240	21’2″	19/16″×1’0″	1.3×19’8″	25.79
  HBM40AXS-R					21’4″	19/16″×1’2″		26.46
  HBM50AXS	400		9.0		21’4″	2.0×1’2″	1.4×19’8″	34.61
  HBM50AXS-R					21’6″	2.0×1’4″		35.27

  *Product masses include that of the external cord (3.8 kg for 40, 4.9 kg for 50).
  *For “Selecting extension cables” and “Number of high-frequency vibrators that can be used simultaneously,” see the relevant page.

  Dimensions, installation, control panel

  Product dimensional drawings

  

  Product dimensional table

  Model	Total length (m)	Head length (dia × length) (mm)	Hose length (dia × length) (mm)
  HBM40AXS	6464	43 × 310	33 × 6000
  HBM40AXS-R	6509	43 × 355
  HBM50AXS	6514	52 × 360	36 × 6000
  HBM50AXS-R	6554	52 × 400

  (Imperial System)

  Model	Total length (ft)	Head length (dia× length) (in×ft)	Hose length (dia× length) (in×ft)
  HBM40AXS	21’2″	19/16″×1’0″	1.3×19’8″
  HBM40AXS-R	21’4″	19/16″×1’2″
  HBM50AXS	21’4″	2.0×1’2″	1.4×19’8″
  HBM50AXS-R	21’6″	2.0×1’4″