SUN 20 Metric Series

A pair of solid profile rings separated by a 20mm ball set; a constant section height of 56mm and a standard outside diameter range from 386mm to 1166mm. SUN 20 Series bearings offer a longer service life compared to FUN 20 Series bearings.

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

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Product Overview

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

Dimensions

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QCB reference	Outline dimensions & weight
	D_a	D_i	U	C	d_af9	d_iH9	Load curve	Weight
	mm	mm	mm	mm	mm	mm	Load curve	kg

SUN 386 20 01 CC LM	386	242	315	313	384	244	1	21
SUN 486 20 01 CC LM	486	342	415	412	484	344	2	29
SUN 616 20 01 CC LM	616	472	545	542	614	474	3	37
SUN 716 20 01 CC LM	716	572	645	642	714	574	4	44
SUN 816 20 01 CC LM	816	672	745	742	814	674	5	52
SUN 916 20 01 CC LM	916	772	845	842	914	774	6	60
SUN 1016 20 01 AA LM	1016	872	945	942	1014	874	7	67
SUN 1166 20 01 AA LM	1166	1022	1095	1092	1164	1024	8	77

QCB reference	Outer holes		Inner holes
	L_a	n_a	L_i	n_i
	mm		mm

SUN 386 20 01 CC LM	360	20	268	20
SUN 486 20 01 CC LM	460	24	368	24
SUN 616 20 01 CC LM	590	32	498	32
SUN 716 20 01 CC LM	690	36	598	36
SUN 816 20 01 CC LM	790	40	698	40
SUN 916 20 01 CC LM	890	40	798	40
SUN 1016 20 01 AA LM	990	44	898	44
SUN 1166 20 01 AA LM	1140	48	1048	48

Standard grease fitting	# at least 2x M8 on inner and outer rings

Interchange information

The SUN20 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

SUN 486 20 00 CC	SD 486 20 00 CC	31.0411.01.ZZ.00	060.20.0414.500.01.1503	VSU 20 0414	173.20.0414.00.00.10
SUN 616 20 00 CC	SD 616 20 00 CC	31.0541.01.ZZ.00	060.20.0544.500.01.1503	VSU 20 0544	173.20.0544.00.00.10
SUN 716 20 00 CC	SD 716 20 00 CC	31.0641.01.ZZ.00	060.20.0644.500.01.1503	VSU 20 0644	173.20.0644.00.00.10
SUN 816 20 00 CC	SD 816 20 00 CC	31.0741.01.ZZ.00	060.20.0744.500.01.1503	VSU 20 0744	173.20.0744.00.00.10
SUN 916 20 00 CC	SD 916 20 00 CC	31.0841.01.ZZ.00	060.20.0844.500.01.1503	VSU 20 0844	173.20.0844.00.00.10
SUN 1016 20 00 CC	SD 1016 20 00 CC	31.0941.01.ZZ.00	060.20.0944.500.01.1503	VSU 20 0944	173.20.0944.00.00.10
SUN 1166 20 00 CC	SD 1166 20 00 CC	31.1091.01.ZZ.00	060.20.1094.500.01.1503	VSU 20 1094	173.20.1094.00.00.10

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Technical

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 SUN20 Metric Series slewing rings >1000mm outer diameter will be manufactured in 42CrMo4 steel. Smaller units are usually produced in 50Mn / C45.

Internal construction

Standard SUN20 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 SUN20 Metric series is ungeared

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. SUN20 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!

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Downloads

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Enquire Now About SUN 20 Metric Series

For any enquiries regarding SUN 20 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.