ROTATING EYE BOLTS

Eye bolt excellence – for increased safety!

Rotating eye bolts provided by Siam Martec Sales are the result of product development process which involves long-time experience in load lifting. Key advantages are:

  • The link or eye part always aligns itself to the load direction – ideal for safe side-lifting.
  • The working load limit (WLL) is higher than that of a conventional eye bolt of the same thread size, so smaller bolts sizes can be used.
  • The safety factor of all models is 5 times the WLL.

From a variety of products you will easily find the right bolt for your lifting needs!

>>See product lineup
>>Download product catalog
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Warning! Lifting with conventional eye bolts can be dangerous.

Side-lifts or turnovers of load are not safe and prohibited by law in many countries.


When lifting with more than one eye bolt, aligning the eye parts is necessary.

If the bolts are not evenly with the surface when load is attached, they are under severe stress that ...
... can cause bolt bending!

PRODUCT LINEUP

FRENO LINKBOLT

This multi-rotating eye bolt...

is a very strong and durable lifting tool. Its link has an articulation of 180° from the surface and it can rotate 360° around its axis. Once the bolt is tightened to the thread of the load with the specified torque, safe lifting in any direction is possible.


* allowed span of link movement

With the Freno Linkbolt turnovers of objects – dangerous with conventional eye bolts – are easily done. The working load limit safety factor is 5:1 for all applicable lifting directions.

>>See product details

Main applications for FRENO LINKBOLT

  • lifting and turning of molds for large plastic components
    (for bumpers, instrument panels, door trims etc.)
  • lifting and turning of molds for aluminum parts
    (for engine blocks, head covers etc.)
  • lifting of precast concrete (PC) parts (columns, stairs)
  • used as lifting piece during subway construction, in order to move machines etc.
  • used as lifting piece for tunneling shield machines
  • uplifting of steel frames
  • moving nacelles, parts during wind generator installation
  • lifting of machines and parts
  • lifting inside sanitation facilities / clean rooms
    (FRENO with special non-electric nickel plating)
Turning a mold using rotating eye bolt Freno Linkbolt. (click to enlarge)
Lifting a concrete part with Freno Linkbolt. (click to enlarge)

PRODUCT DETAILS

Freno Linkbolt A strong compact type

WLL: 0.3t - 15.0t
Bolt sizes: M8 - M48
Safety factor: 5:1

3 times higher working load limit (WLL) compared to a conventional eye bolt of the same bolt size.
Smaller thread holes are required which makes the processing and the positioning of the holes easier.

>>Working Load Limit Table

Spec

Product
Code
WLL
(t)
Bolt
Size
Tightening
Torque
(Nm)
Weight
(kg)
Turning
Radius
(mm)
A-8 0,3 M8 8 - 15 0.23 63
A-10 0.5 M10 12 - 20 0.24 63
A-12 0.8 M12 18 - 29 0.7 101
A-16 1.6 M16 30 - 49 0.8 101
A-20 2.8 M20 49 - 78 2.2 142
A-24 3.7 M24 59 - 196 2.4 142
A-30 6.3 M30 108 - 294 7.1 192
A-36 8.0 M36 177 - 392 7.4 192
A-42 10.0 M42 230 - 450 13.0 240
A-48 12.0 M48 294 - 585 13.9 240
A-48L 15.0 M48 294 - 585 15.6 245
A-36S 7.5 M36 177 - 392 8.1 192
A-48S 12.0 M48 294 - 585 15.0 223

* A-36S and A-48S are equipped with a ball bearing – for extra smooth rotation under load.

Dimensions

Prod.
Code
Dimensions (mm)
A B C E F G H K L N O
A-8 60 42 34 40 13 8 11 27 61 14 24
A-10 60 42 33 40 17 8 11 28 61 19 24
A-12 89 57 56 51 19 13 17 39 95 19 37
A-16 89 57 54 51 24 13 17 41 95 24 37
A-20 126 82 78 80 30 19 23 56 134 32 51
A-24 126 82 76 80 36 19 23 58 134 37 51
A-30 179 117 103 111 46 27 32 79 182 50 73
A-36 179 117 99 111 55 27 32 83 182 60 73
A-42 220 142 127 136 65 31 39 102 229 65 95
A-48 220 142 123 136 75 31 39 106 229 69 95
A-48L 246 152 120 145 75 35 43 112 232 78 95
A-36S 179 117 76 111 55 27 32 106 182 61 73
A-48S 220 142 97 136 75 31 39 132 229 69 95

Freno Linkbolt B JIS type

WLL: 0.95t - 20.0t
Bolt sizes: M24 - M100
Safety factor: 5:1

This model shows the same bolt sizes and WLL as conventional eye bolts corresponding with the Japanese Industrial Standard (JIS).
The B type can be attached to the same threads used for conventional eye bolts and – because of its rotating link – increases lifting safety.

>>Working Load Limit Table

Spec

Product
Code
WLL
(t)
Bolt
Size
Tightening
Torque
(Nm)
Weight
(kg)
Turning
Radius
(mm)
B-24 0.95 M24 18 - 29 0.85 101
B-30 1.5 M30 20 - 39 1 101
B-36 2.3 M36 34 - 49 2.7 142
B-42 3.4 M42 49 - 98 2.9 142
B-48 4.3 M48 59 - 147 3.4 142
B-64 9 M64 88 - 392 9.3 192
BB-64 15 M64 137 - 785 15 245
B-80 15 M80 137 - 785 17 245
B-100 15 M100 137 - 785 20 245
MB-64 20 M64 196 - 785 28 280
MB-80 20 M80 196 - 785 30 280
MB-100 20 M100 196 - 785 34 280

Dimensions

Prod.
Code
Dimensions (mm)
A B C E F G H K L N O
B-24 89 57 52 51 30 13 17 43 95 38 36
B-30 89 57 52 51 30 13 17 45 97 45 43
B-36 126 82 72 80 46 19 23 63 135 55 51
B-42 126 82 72 80 46 19 23 65 137 65 59
B-48 126 82 72 80 46 19 23 65 137 70 68
B-64 179 117 94 111 65 27 32 91 184 90 89
BB-64 246 152 115 145 85 35 43 120 235 90 110
B-80 246 152 115 145 85 35 43 120 235 105 110
B-100 246 152 115 145 85 35 43 120 235 130 130
MB-64 272 174 127 163 85 42 49 148 275 82 150
MB-80 272 174 127 163 85 42 49 148 275 105 150
MB-100 272 174 127 163 85 42 49 148 275 130 150

Freno Linkbolt C weld-on type

WLL: 0.5t - 8.0t
Safety factor: 5:1

This model is designed for welding on the surface of the load.

>>Working Load Limit Table

Spec

Product
Code
WLL
(t)
Weld
thickness a
(mm)
Weight
(kg)
Turning
Radius
(mm)
C-10 0.5 3 0.29 63
C-16 1.6 5 0.95 101
C-24 4 8 2.8 142
C-36 8 12 8.4 192

Welding shall be carried out by qualified welders only.
The minimum weld thickness (a) must be according to the values specified in above table.

Dimensions

Prod.
Code
Dimensions (mm)
A B C E G H K L P S
C-10 60 42 32 40 8 11 32 64 45 5
C-16 89 57 52 51 13 17 48 100 60 7
C-24 126 82 71 80 19 23 71 142 85 10
C-36 179 117 94 111 27 32 99 192 120 14

ROTARY EYE BOLT

This compact eye bolt...

comes in 6 sizes with working load limits from 0.6 - 5.6 tons.
It can rotate 360° around its axis, therefore it is ideal for side-lifting of loads, when conventional eye bolts are not allowed.

The working load limit safety factor of the Rotary Eye Bolt is 5:1 for all applicable lifting directions.
Thanks to its small turning radius, it can be mounted in areas with limited space.

PRODUCT DETAILS

Rotary Eye Bolt

WLL: 0.6t - 5.6t
Bolt sizes: M12 - M36
Safety factor: 5:1

2.5 times higher working load limit (WLL) compared to a conventional eye bolt of the same bolt size.

>>Working Load Limit Table

Spec

Product
Code
WLL
(t)
Bolt
Size
Tightening
Torque
(Nm)
Weight
(kg)
Turning
Radius
(mm)
RE-12 0.6 M12 4 - 15 0.25 28
RE-16 1.2 M16 8 - 30 0.4 32
RE-20 2 M20 16 - 50 0.7 38
RE-24 2.6 M24 25 - 80 1.0 45
RE-30 3.6 M30 40 - 150 2.1 56
RE-36 5.6 M36 60 - 210 3.5 67

Dimensions

Prod.
Code
Dimensions (mm)
A B C F f G H K L N O
RE-12 56 32 24 10 5 10 12 18 42 18 36
RE-16 64 36 28 13 6 12 14 20 48 24 42
RE-20 76 42 31 19 8 15 17 25 56 30 44
RE-24 90 52 40 24 10 17 19 30 70 36 48
RE-30 112 62 54 24 10 24 25 35 90 45 64
RE-36 134 74 67 27 10 28 30 39 107 54 72

Use of Rotary Eye Bolt

Uplifting a mold using Rotary Eye Bolt. (click to enlarge)
Rotary Eye Bolt is perfect for side-lifting molds or concrete parts. (click to enlarge)

RET(optional)

Convenient tool for tightening and inspection of Rotary Eye Bolt.


Tightening can be done by attaching the RET to the bolt and turning the eye part by hand.


Inspection of the eye top part: Try to insert it into the RET as shown on the photo. If it fits, the eye is worn out. The Rotary Eye Bolt must not be used anymore!


An Inspection method to detect deformation of the eye part, is to try to insert the RET into the eye. If it fits, the eye is deformed. The Rotary Eye Bolt must not be used anymore!

MY BOLT

MY Bolt

WLL: 0.5t - 1.0t
Bolt sizes: M12 - M16
Safety factor: 5:1

Rotates 360° around its axis, suitable for side-lifting.

>>Working Load Limit Table

Spec

Product
Code
WLL
(t)
Bolt
Size
Tightening
Torque
(Nm)
Weight
(kg)
Turning
Radius
(mm)
MY-12A 0.5 M12 18 - 29 0.93 70
MY-16A 1.0 M16 34 - 49 0.98 70

Dimensions

Prod.
Code
Dimensions (mm)
A B C E H J K N O
MY-12A 68 57 37 37 11.5 42 16 17 42
MY-16A 68 57 37 37 11.5 42 16 22 42

Use of MY Bolt

Shackles, hooks etc. connected to MY Bolt don't touch the load what makes it the ultimate choice when lifting loads with a sensitive surface.

ROTATING EYE BOLTS Working Load Limits

FRENO LINKBOLT A

Lifting
Method
Lifting Angle α 90° 90°
Product Code Working Load Limit (t) Safety Factor 5:1
A-8 0.3 0.3 0.6 0.6
A-10 0.5 0.5 1.0 1.0
A-12 0.8 0.8 1.6 1.6
A-16 1.6 1.6 3.2 3.2
A-20 2.8 2.8 5.6 5.6
A-24 3.7 3.7 7.4 7.4
A-30 6.3 6.3 12.6 12.6
A-36 8.0 8.0 16.0 16.0
A-42 10.0 10.0 20.0 20.0
A-48 12.0 12.0 24.0 24.0
A-48L 15.0 15.0 30.0 30.0
A-36S 7.5 7.5 15.0 15.0
A-48S 12.0 12.0 24.0 24.0
Lifting
Method
Lifting Angle α 0 - 60° 60 - 90° 90 - 120° 0 - 60° 60 - 90° 90 - 120°
Product Code Working Load Limit (t) Safety Factor 5:1
A-8 0.51 0.42 0.3 0.77 0.63 0.45
A-10 0.8 0.7 0.5 1.2 1.0 0.75
A-12 1.3 1.12 0.8 2.0 1.6 1.2
A-16 2.7 2.2 1.6 4.1 3.3 2.4
A-20 4.8 3.9 2.8 7.2 5.8 4.2
A-24 6.3 5.1 3.7 9.5 7.7 5.5
A-30 10.8 8.8 6.3 16.2 13.2 9.4
A-36 13.7 11.2 8.0 20.6 16.8 12.0
A-42 17.2 14.0 10.0 25.8 21.0 15.0
A-48 20.6 16.8 12.0 30.9 25.2 18.0
A-48L 25.8 21.0 15.0 38.7 31.5 22.5
A-36S 12.9 10.5 7.5 19.3 15.7 11.2
A-48S 20.6 16.8 12.0 30.9 25.2 18.0

FRENO LINKBOLT B / C

Lifting
Method
Lifting Angle α 90° 90°
Product Code Working Load Limit (t) Safety Factor 5:1
B-24 0.95 0.95 1.9 1.9
B-30 1.5 1.5 3.0 3.0
B-36 2.3 2.3 4.6 4.6
B-42 3.4 3.4 6.8 6.8
B-48 4.3 4.3 8.6 8.6
B-64 9.0 9.0 18.0 18.0
BB-64, B-80, B-100 15.0 15.0 30.0 30.0
MB-64, MB-80, MB-100 20.0 20.0 40.0 40.0
C-10 0.5 0.5 1.0 1.0
C-16 1.6 1.6 3.2 3.2
C-24 4.0 4.0 8.0 8.0
C-36 8.0 8.0 16.0 16.0
Lifting
Method
Lifting Angle α 0 - 60° 60 - 90° 90 - 120° 0 - 60° 60 - 90° 90 - 120°
Product Code Working Load Limit (t) Safety Factor 5:1
B-24 1.6 1.33 0.95 2.4 1.9 1.4
B-30 2.5 2.1 1.5 3.8 3.1 2.2
B-36 3.9 3.2 2.3 5.9 4.8 3.4
B-42 5.8 4.7 3.4 8.7 7.1 5.1
B-48 7.3 6.0 4.3 11.0 9.0 6.4
B-64 15.4 12.6 9.0 23.2 18.9 13.5
BB-64, B-80, B-100 25.8 21.0 15.0 38.7 31.5 22.5
MB-64, MB-80, MB-100 34.4 28.0 20.0 51.6 42.0 30.0
C-10 0.8 0.7 0.5 1.2 1.0 0.75
C-16 2.7 2.2 1.6 4.1 3.3 2.4
C-24 6.8 5.6 4.0 10.3 8.4 6.0
C-36 13.7 11.2 8.0 20.6 16.8 12

ROTARY EYE BOLT / MY BOLT

Lifting
Method
Lifting Angle α 90° 90°
Product Code Working Load Limit (t) Safety Factor 5:1
RE-12 0.6 0.6 1.2 1.2
RE-16 1.2 1.2 2.4 2.4
RE-20 2.0 2.0 4.0 4.0
RE-24 2.6 2.6 5.2 5.2
RE-30 3.6 3.6 7.2 7.2
RE-36 5.6 5.6 11.2 11.2
MY-12A 0.5 0.5 1 1
MY-16A 1 1 2 2
Lifting
Method
Lifting Angle α 0 - 60° 60 - 90° 90 - 120° 0 - 60° 60 - 90° 90 - 120°
Product Code Working Load Limit (t) Safety Factor 5:1
RE-12 1.0 0.8 0.6 1.5 1.2 0.9
RE-16 2.0 1.6 1.2 3.1 2.5 1.8
RE-20 3.4 2.8 2.0 5.1 4.2 3.0
RE-24 4.4 3.6 2.6 6.7 5.5 3.9
RE-30 6.2 5.0 3.6 9.3 7.6 5.4
RE-36 9.6 7.8 5.6 14.5 11.8 8.4
MY-12A 0.8 0.7 0.5 1.2 1 0.75
MY-16A 1.7 1.4 1 2.5 2.1 1.5

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>>Inquire information or quotation