FEG 20 Metric Series

A flange profile inner and geared outer ring separated by a 20 mm ball set; a constant section height of 56 mm and a standard range of external diameters ranging from 404 mm to 1198 mm

Overview
Dimensions
Technical
Downloads

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

While a flange reduces the overall weight of the bearing, it also reduces its torsional rigidity and these bearings are thus best suited to light or medium duty applications where there is not a high load eccentricity.

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

If the METRIC sizes and bolt patterns are not quite right, consider the FEG20 Imperial Series

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.

Dimensions

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

FEG 404 20 00 AA LM	404		315.5	312.5	275	204	1	23
FEG 505 20 00 AA LM	504		415.5	412.5	375	304	2	29
FEG 650 20 00 AA LM	640		545.5	542.5	505	434	3	40
FEG 750 20 00 AA LM	742		645.5	642.5	605	534	4	47
FEG 850 20 00 AA LM	838		745.5	742.5	705	634	5	53
FEG 950 20 00 AA LM	950		845.5	842.5	805	734	6	64
FEG 1050 20 00 AA LM	1046		945.5	942.5	905	834	7	69
FEG 1200 20 00 AA LM	1198		1095.5	1092.5	1055	984	8	82

QCB reference	Outer holes		Inner holes		20^o spur gear
	L_a	n_a	L_i	n_i	P	m	z	F_{z MAX}
	mm		mm		mm			KN

FEG 404 20 00 AA LM	355	10	232	12	395	5	79	33
FEG 505 20 00 AA LM	455	10	332	12	495	5	99	33
FEG 650 20 00 AA LM	585	14	462	14	630	6	105	39
FEG 750 20 00 AA LM	685	16	562	16	732	6	122	39
FEG 850 20 00 AA LM	785	18	662	16	828	6	138	39
FEG 950 20 00 AA LM	885	18	762	18	936	8	117	52
FEG 1050 20 00 AA LM	985	20	862	20	1032	8	129	52
FEG 1200 20 00 AA LM	1135	22	1012	20	1184	8	148	52

Interchange information

The FEG20 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.

Basic QCB Ref	Torriani	Rollix	Roth Erde		INA
FEG 404 20 00
FEG 505 20 00	E 505 20 00 C	21 0411 01 ZZ 00	231 20 0400 013	21/520 1	VLA 20 0414 N
FEG 650 20 00	E 650 20 00 C	21 0541 01 ZZ 00	231 20 0500 013	21/650 1	VLA 20 0544 N
FEG 750 20 00	E 750 20 00 C	21 0641 01 ZZ 00	231 20 0600 013	21/750 1	VLA 20 0644 N
FEG 850 20 00	E 850 20 00 C	21 0741 01 ZZ 00	231 20 0700 013	21/850 1	VLA 20 0744 N
FEG 950 20 00	E 950 20 00 C	21 0841 01 ZZ 00	231 20 0800 013	21/950 1	VLA 20 0844 N
FEG 1050 20 00	E 1050 20 00 C	21 0941 01 ZZ 00	231 20 0900 013	21/1050 1	VLA 20 0944 N
FEG 1200 20 00	E 1200 20 00 C	21 1091 01 ZZ 00	231 20 1000 013	21/1200 1	VLA 20 1094 N

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

All geared slewing rings are manufactured in 42CrMo4 V steel to offer superior gear strength over some other brands.

Internal construction

Standard FEG20 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 FEG20 Metric series has a standard 20° pressure angle, uncorrected spur gear cut into the outer 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. FUN20 Metric Series slewing rings will usually have 4 or 6 grease nipples DIN 71412 M8x1 on the radial face of the inner ring 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!

QCB Reference	PDF Print
FEG 404 20 00 AA LM	FEG 404 20.pdf
FEG 505 20 00 AA LM	FEG 505 20.pdf
FEG 650 20 00 AA LM	FEG 650 20.pdf
FEG 750 20 00 AA LM	FEG 750 20.pdf
FEG 850 20 00 AA LM	FEG 850 20.pdf
FEG 950 20 00 AA LM	FEG 950 20.pdf
FEG 1050 20 00 AA LM	FEG 1050 20.pdf
FEG 1200 20 00 AA LM	FEG 1200 20.pdf