Product Datasheet
Reference 70™ (REF 70™) Elevator Bolts
4B
Components
Limited
Reference 70™ (REF 70™) Elevator Bolts
Zinc Plated Steel
APPLICATION
Used for fastening metal elevator buckets.
OVERVIEW
Reference 70™ (REF 70™) are ISO grade 5.8 elevator bolts
with a concave head and four lugs on the underside to help
prevent rotation when tightening. The REF 70™ bolt, when
coupled with the special oval washer, is ideal for steel elevator
buckets in heavy-duty industrial applications on pulley
diameters over 20 inches. Because of this domed area under
the bolt head, these bolts are not recommended for flat back
plastic buckets, especially on thinner belts.
FEATURES
► ISO Grade 5.8 Steel (Exceeds DIN 15237)
► Concave Head & 4 Lugs Prevent Rotation During Tightening
► Special Oval Washer for Pulley Diameters Over 20 Inches
HARDWARE & ACCESSORIES
► Nuts, Washers & Spacers
FREE
Elevator & Conveyor Engineering Design Service
Take advantage of 4B’s free, guaranteed worldwide
technical support service from a team of material
handling engineers specializing in the design and
upgrade of bucket elevators and conveyors.
Whether you want a new elevator design, or just
want to increase the capacity and performance of
your existing elevator, our engineers can help.
Information subject to change or correction. Jul 2016
4B COMPONENTS LIMITED 625 Erie Avenue, Morton, IL 61550 USA
Tel: 309-698-5611
Fax: 309-698-5615
www.go4b.com/usa
Product Datasheet
Reference 70™ (REF 70™) Elevator Bolts
4B
Components
Limited
Metal Buckets:
Metal Buckets:
Non-Recessed Bolt Holes (Image A) • Hex Nut
• Split Ring Lock Washer
• Flat Washer
• Bucket
• Belt
• Bolt
Recessed Bolt Holes (Image B) • Hex Nut
• Split Ring Lock Washer
• Flat Washer
• Bucket
• Belt
• Oval Washer
Image B
• Bolt
Image A
When using the large Reference 70
™ (REF 70™) oval
washer with the REF 70™ bolt, the washer should be
placed with the widest part across the belt in order to
minimize stress on the system as it passes around the
curved pulley (Image C). Note: the bolt head and oval
washer are installed on the back of the belt.
Image C
TECHNICAL SPECIFICATIONS
REF 70™ Elevator Bucket Bolts
Size (in)
Zinc Plated Steel
Part #
Head Diameter Ø
(in)
Max. Torque
(ft. lbs.)
Package
Quantity
Package
Weight
(lbs.)
1/4 x 1/2
1/4 x 3/4
1/4 x 1
1/4 x 1-1/4
1/4 x 1-1/2
5/16 x 3/4
5/16 x 1
5/16 x 1-1/4
5/16 x 1-1/2
5/16 x 2
3/8 x 1
3/8 x 1-1/4
3/8 x 1-1/2
3/8 x 1-3/4
3/8 x 2
3/8 x 2-1/4
3/8 x 2-1/2
1/2 x 1-1/4
1/2 x 1-1/2
1/2 x 1-3/4
1/2 x 2
1/2 x 2-1/4
REF70-1/4X1/2
REF70-1/4X3/4
REF70-1/4X1
REF70-1/4X1.1/4
REF70-1/4X1.1/2
REF70-5/16X3/4
REF70-5/16X1
REF70-5/16X1.1/4
REF70-5/16X1.1/2
REF70-5/16X2
REF70-3/8X1
REF70-3/8X1.1/4
REF70-3/8X1.1/2
REF70-3/8X1.3/4
REF70-3/8X2
REF70-3/8X2.1/4
REF70-3/8X2.1/2
REF70-1/2X1.1/4
REF70-1/2X1.1/2
REF70-1/2X1.3/4
REF70-1/2X2
REF70-1/2X2.1/4
5/8
5/8
5/8
5/8
5/8
7/8
7/8
7/8
7/8
7/8
1
1
1
1
1
1
1
1-3/8
1-3/8
1-3/8
1-3/8
1-3/8
6
6
6
6
6
13
13
13
13
13
23
23
23
23
23
23
23
57
57
57
57
57
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
2.29
2.60
2.73
2.98
3.44
4.94
5.51
5.86
6.23
7.28
8.69
8.95
9.48
10.23
10.76
11.35
12.21
18.87
19.53
20.06
21.96
22.36
- Not Recommended on Pulley Diameters Less Than 20 Inches (500 mm) or Flat Back Plastic Elevator Buckets
- Installed Bolt Torque Rating Dependent on Bucket and Belt Size
Information subject to change or correction. Jul 2016
4B COMPONENTS LIMITED 625 Erie Avenue, Morton, IL 61550 USA
Tel: 309-698-5611
Fax: 309-698-5615
www.go4b.com/usa