- Flanged
- FUN 20 Series
- FUN 32 Series
- Solid Section
- SUN 20 Series
- SUN 25 Series
- SUN X14 Crossed Roller Series
- Flanged
- FEG 20 Series
- FEG 32 Series
- Solid Section
- SEG 20 Series
- SEG 25 Series
- SEG X14 Crossed Roller Series
- Flanged
- FIG 20 Series
- FIG 32 Series
- Solid Section
- SIG 20 Series
- SIG 25 Series
- SIG X14 Crossed Roller Series
Product Catalogue
Find Out More
Product Catalogue
Find Out More
- Flanged
- FUN 20 Series
- FUN 32 Series
- Solid Section
- SUN 20 Series
- SUN 25 Series
- SUN X14 Crossed Roller Series
- Flanged
- FEG 20 Series
- FEG 32 Series
- Solid Section
- SEG 20 Series
- SEG 25 Series
- SEG X14 Crossed Roller Series
- Flanged
- FIG 20 Series
- FIG 32 Series
- Solid Section
- SIG 20 Series
- SIG 25 Series
- SIG X14 Crossed Roller Series
SIG 25 Metric Series
Two solid section rings separated by a 25mm ball set, with the inner ring being geared. This series has a constant height of 63mm, and a standard range of external diameters ranging from 855mm to 1555mm.
A feature of the SIG 25 series is the high-module, wide-face gearing, making it suitable for high-torque applications
Compared with traditional combination bearing and gearing systems, slewing rings provide a sealed bearing to accommodate axial, radial and moment loads while simultaneously providing a gear for power trasmission as well as bolt holes for fixation.
Key Features
- A reduction in the number of design elements
- Less component machining
- Quick and easy assembly of machinery
- Weight savings
Our engineers design, manufacture, and supply components to your exact specification. Contact us to discuss your project.
Two solid section rings separated by a 25mm ball set, with the inner ring being geared. This series has a constant height of 63mm, and a standard range of external diameters ranging from 855mm to 1555mm.
A feature of the SIG 25 series is the high module, wide face gearing making it suitable for high torque applications.
All QCB® slewing rings are manufactured to the highest possible quality levels in ISO-certified factories.
A QCB® quality standard defines all aspects of their dimensions and tolerances as well as all aspects of manufacturing, from material properties and all stages of production to packing and labelling.
What are the Typical Uses for Slewing Rings?
- Cranes and crane handling systems
- Man lifts and access platforms
- Bottling and packing line carousels
- Robotics and positioning systems
- Solar tracking systems
- Wind turbines
- Winches
- Water treatment plants
- Machine tools
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| QCB reference | Outline dimensions & weight | |||||||
| Da | Di | C | da f9 | ci f9 | Load curve | Weight | ||
| mm | mm | mm | mm | mm | mm | kg | ||
| SIG 855 25 01 AA LM | 855 | 610 | 753 | 757 | 853 | 755 | 38 | 119 |
| SIG 955 25 01 AA LM | 955 | 710 | 853 | 857 | 953 | 855 | 29 | 137 |
| SIG 1055 25 01 AA LM | 1055 | 810 | 953 | 957 | 1053 | 955 | 30 | 149 |
| SIG 1155 25 01 AA LM | 1155 | 910 | 1053 | 1057 | 1153 | 1055 | 31 | 165 |
| SIG 1255 25 01 AA LM | 1255 | 1010 | 1153 | 1157 | 1253 | 1155 | 32 | 180 |
| SIG 1355 25 01 AA LM | 1355 | 1110 | 1253 | 1257 | 1353 | 1255 | 33 | 198 |
| SIG 1455 25 01 AA LM | 1455 | 1210 | 1353 | 1357 | 1453 | 1355 | 34 | 215 |
| SIG 1555 25 01 AA LM | 1555 | 1310 | 1453 | 1457 | 1553 | 1455 | 35 | 229 |
| QCB reference | Outer holes | Inner holes | 20o stub gear | |||||
| La | na | Li | ni | P | M | z | Fz MAX | |
| mm | mm | mm | KN | |||||
| SIG 855 25 01 AA LM | 815 | 24 | 694 | 24 | 630 | 10 | 63 | 100 |
| SIG 955 25 01 AA LM | 915 | 28 | 794 | 28 | 730 | 10 | 73 | 100 |
| SIG 1055 25 01 AA LM | 1015 | 30 | 894 | 30 | 830 | 10 | 83 | 100 |
| SIG 1155 25 01 AA LM | 1115 | 30 | 994 | 30 | 930 | 10 | 93 | 100 |
| SIG 1255 25 01 AA LM | 1215 | 36 | 1094 | 36 | 1030 | 10 | 103 | 100 |
| SIG 1355 25 01 AA LM | 1315 | 42 | 1194 | 42 | 1130 | 10 | 113 | 100 |
| SIG 1455 25 01 AA LM | 1415 | 42 | 1294 | 42 | 1230 | 10 | 123 | 100 |
| SIG 1555 25 01 AA LM | 1515 | 48 | 1394 | 48 | 1330 | 10 | 133 | 100 |
| Standard grease fitting | # at least 4x M8 on outer ring | |||||||
Interchange information
The SIG25 Metric Series is interchangeable with bearings from other manufacturers such as Roth Erde, Torriani Gianni, INA, Schaeffler, SKF, RKS, RIMA, La Leonessa and many more. However there may be variations to this rule (e.g. OEM variants) and we invite you to refer to our technical staff for assistance.
00 Type without pilot diameter
| SIG 855 25 00 AA | VSI 25 0755 N |
| SIG 955 25 00 AA | VSI 25 0855 N |
| SIG 1055 25 00 AA | VSI 25 0955 N |
| SIG 1155 25 00 AA | VSI 25 1055 N |
| SIG 1255 25 00 AA | |
| SIG 1355 25 00 AA | |
| SIG 1455 25 00 AA | |
| SIG 1555 25 00 AA |
01 Type with pilot diameter
| SIG 855 25 01 AA | VSI 25 0755 N ZT | I 855 25 00 B | 112.25.0755.00.00.10 |
| SIG 955 25 01 AA | VSI 25 0855 N ZT | I 955 25 00 B | 112.25.0855.00.00.10 |
| SIG 1055 25 01 AA | VSI 25 0955 N ZT | I 1055 25 00 B | 112.25.0955.00.00.10 |
| SIG 1155 25 01 AA | VSI 25 1055 N ZT | I 1155 25 00 B | 112.25.1055.00.00.10 |
| SIG 1255 25 01 AA | 112.25.1155.00.00.10 | ||
| SIG 1355 25 01 AA | 112.25.1255.00.00.10 | ||
| SIG 1455 25 01 AA | 112.25.1355.00.00.10 | ||
| SIG 1555 25 01 AA | 112.25.1455.00.00.10 |
Custom designs
- Double drilled or custom drilling patterns
- Higher precision bearings with location diameters
- Reduced internal clearance (Class 5 & Class 6)
- Black oxide or zinc plating for enhanced corrosion protection
- Epoxy paint or even Nylon coated units to special order
- Stainless steel or aluminium versions
Materials
From 2015 all SIG25 Metric Series will be manufactured in 42CrMo4 steel. Smaller units are usually produced in 50Mn / C45.
Internal construction
Standard SIG20 Series bearings incorporate plastic spacers, but ball spacers, steel or brass spacers, or even full complement and caged designs can be supplied for specific applications.
Seals
A land riding NBR (nitrile rubber) seal strip is standard. VITON seals can be supplied to order.
Gearing
The SIG20 Metric series has a standard 20° pressure angle, uncorrected spur gear cut into the inner ring.
Lubrication
QCB® Slewing rings are assembled with a small quantity of Lithium EP2 grease. It is important that all slewing rings are greased during installation and prior to operation. SIG25 Metric Series slewing rings will usually have 4 or 6 grease nipples DIN 71412 M8x1 on the radial face of each ring. Sufficient grease nipples for all holes as well as Nylon plugs (to insert if a grease nipple is not required) are supplied with each ring.
Special greases can be supplied on demand as can GreaseMax Automatic Lubricators and Accessories.
Load & Bolt limit curves
If both a radial and an axial load act on the bearing these must be combines into a single equivalent load to enable basic selection from the load curves. The raceway limit is illustrated by the blue line, the red line illustrates the limit for the specified number of Grade 10.9 bolts.The load point should be well under the relevant load curve for long life.
Grade 8.8 bolts can be used but only after approval by our technical team.
Similarly if the load is suspended or the axis of rotation is not vertical please refer the application details to us and take advantage of our decades of experience!
All QCB® slewing rings are manufactured to the highest possible quality levels in ISO certified factories. A QCB® Quality Standard defines all aspects of their dimensions and tolerances as well as all aspects of manufacturing from materials properties, all stages of production, as well as packing and labelling.
Whilst the data on the site is updated regularly, we reserve the right to implement subtle changes to these standards in our quest for continual product improvement.
Applications
- Industrial positioners (e.g. welding assemblies and jigs)
- Ship or truck loading chutes and swivels
- Stretch wrapping machines
- Conveyors and other materials handling equipment
- Simple amusement rides
Need help?
Our technical team have many years of experience and are happy to assist with selection. Call or e-mail them for fast, efficient and professional advice.
The Design Form will assist you in defining your application details.
For any enquiries regarding SIG 25 Metric Series, please complete our enquiry form, and a member of our technical team will respond promptly. Alternatively, you can reach out directly to one of our offices using the contact details here. Our specialists are ready to provide guidance and support tailored to your machinery and engineering needs.