ANCHOR

Big One BG/BG-D type (Steel)

Wedge anchor

JCAA

  • ■Demonstrates reliable strength by installation through torque control and three-sided wedges.
  • ■Demonstrates reliable installation strength with the torque control of the three-sided wedges. Installation can be done by either sides of the anchor as the diameter is the same.
  • ■Overall length can be checked after installation by marking on the head.

Dimensional Drawing

unika news PDF (608KB)

Big One BG type (Steel)

Uses

Concrete•Stone

Installation method

  1. Drill vertically to target surface with the determined preparation diameter and preparation hole depth.
  2. Use a dust collector or blower to thoroughly remove chips in the hole.
  3. Insert a big one.
  4. Hammer in until the washer contacts the installed object.
  5. Use a torque wrench to tighten the nut to the specified torque value.
  6. The three-sided wedge expands and installation is completed.

Precautions on use

  • Wear safety protection equipment such as protective glasses, a helmet etc., during installation.
  • Use a dust collector or blower to thoroughly remove chips in the hole.
  • Select overall length of anchor in consideration of thickness of installed object.
  • Align the end face of the nut with the end of the tape to set.
  • For installation, use a torque wrench to tighten to the specified torque.

■Installation explanatory video

Big One BG type (Steel) Installation explanatory video

■Structural Drawing

Big One BG type (Steel) Structural Drawing

■Uses

Electrical, plumbing, air-conditioning / heating duct works, elevator construction work, elevator installation work.

Width across flat/Marking on head

■Tightening torque

Thread
nominal
diameter
M8 M10 M12 M16
Width
across
flat
13mm 17mm 19mm 24mm
Tightening
torque
15N•m 30N•m 45N•m 100N•m

■Marking on head

Overall
length(mm)
60 70 80 90 100 120 140 150
Marking B C D E F H J K

Precautions

Before installation

Install it after aligning the nut with the taper end section on the head of the anchor body.

Before installation

Installation check

If the thread section is protruded by a height of one nut or more when the nut is tightened, it has been improperly installed. Check the preparation hole diameter and install in another position.

Installation check

JCAA Product Certification Mark
Products with this certification mark satisfy the evaluation and certification standards specified
by the Japan Construction Anchor Association (JCAA).
BG type (Unichromate treatment)FC=21N/mm2
Size Dia
(outside
diameter)
L
(mm)
TL
(mm)
Max. use
thickness

(mm)
Drilling
condition
(mm)
Nut
width
across
flat

(mm)
Embedment
depth
(mm)
Max.
extraction
strength

(kN)
Pcs./box Pcs./ctn JAN Code
Preparation
hole diameter
Preparation
hole depth
BG-860 M8 60 25.0 5 8.0 52 or more 13 43 14.1 50 400 4989270730014
BG-870 70 35.0 15 50 400 4989270730083
BG-1070 M10 70 26.5 4 10.0 60 or more 17 52 17.7 30 240 4989270730021
BG-1080 80 36.5 13 30 240 4989270730090
BG-1090 90 46.5 22 30 240 4989270730038
BG-1010 100 56.5 32 30 180 4989270730106
BG-1280 M12 80 29.0 4 12.0 68 or more 19 61 20.6 25 150 4989270730045
BG-1290 90 39.0 12 25 150 4989270730113
BG-1210 100 49.0 22 25 150 4989270730120
BG-1212 120 69.0 42 25 100 4989270730137
BG-1215 150 99.0 72 25 100 4989270730144
BG-1612 M16 120 59.0 25 16.0 80 or more 24 71 32.9 10 60 4989270730151
BG-1614 140 79.0 45 10 60 4989270730168

*Maximum extraction strength values are values measured by UNIKA and not standard values.

BG-D type (Hot-dip galvanizing treatment)Wedge: Stainless steelFC=21N/mm2
Size Dia
(outside
diameter)
Overall
length
(mm)
Marking
on head
Thread
length
(mm)
Max. use
thickness

(mm)
Drilling
condition
(mm)
Nut
width
across
flat

(mm)
Embedment
depth
(mm)
Max.
extraction
strength

(kN)
Pcs./box Pcs./ctn Price
including
tax
[Main Unit]
(1 pc.)
JAN Code
Preparation
hole diameter
Preparation
hole depth
BG-1080D M10 80 D 36.5 13 10.0 60 or more 17 52 19.6 30 240 126[120] 4989270732018
BG-1090D 90 E 46.5 22 30 240 137[130] 4989270732025
BG-1290D M12 90 E 39.0 12 12.0 68 or more 19 61 26.9 25 150 179[170] 4989270732032
BG-1210D 100 F 49.0 22 25 150 189[180] 4989270732049
BG-1212D 120 H 69.0 42 25 100 200[190] 4989270732056
BG-1612D M16 120 H 59.0 25 16.0 80 or more 24 71 42.6 10 60 399[380] 4989270732063
BIG ONE Hammering tool(Machine) [SDS type]
Size Matching anchor
thread dia.
Overall length(mm) Price including tax
[Main Unit] (1 pc.)
JAN Code
BG-SD M8,M10,M12 160 1,575[1,500] 4989270940031
BG-16SD M16 160 2,310[2,200] 4989270940048

 

Precautions on use

  • Set a nut on the specified position before hammering.
  • After hammering, make sure to tighten the nut with a torque wrench to the specified torque.
  • It cannot be used for BGL type.
  • Different diameter high nut for Big One (Unichrome treatment)
  • Overall length/Width across flat
  • W thread/M thread (Reliable installation can be visually checked because holes are provided.)
Different diameter high nut for Big One (Unichrome treatment)
Size Thread diameter
(outside diameter)
Overall length(mm) Width
across flat

(mm)
Pcs./box Pcs./ctn JAN Code
NBG-3010M W3/8*M10 40 14 50 400 4989270739017
NBG-4012M W1/2*M12 50 19 25 200 4989270739031
Different diameter high nut for Big One (Stainless steel)
Size Thread diameter
(outside diameter)
Overall length(mm) Width
across flat

(mm)
Pcs./box Pcs./ctn JAN Code
NBGS-3010M W3/8*M10 40 14 50 400 4989270739048
NBGS-4012M W1/2*M12 50 19 25 200 4989270739055

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