FEG 20 Imperial Series
A flange profile inner and geared outer ring separated by a 3/4" ball set; a constant section height of 2.025" and a standard range of external diameters ranging from 19.9" to 46.87" matching American dimensions, gearing and bolt patterns
ll 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.
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 IMPERIAL sizes and bolt patterns are not quite right, consider the FEG20 Metric Series
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.
|QCB reference||Outline dimensions & weight|
|FEG 506 20 61 AA LM||19.900||11.970||16.220||16.140||14.490||1||72|
|FEG 639 20 61 AA LM||25.150||17.090||21.340||21.260||19.610||2||96|
|FEG 740 20 61 AA LM||29.150||21.030||25.280||25.200||23.550||3||115|
|FEG 836 20 61 AA LM||32.900||24.970||29.220||29.140||27.490||4||128|
|FEG 945 20 61 AA LM||37.200||28.900||33.150||33.070||31.420||5||152|
|FEG 1047 20 61 AA LM||41.200||32.840||37.090||37.010||35.360||6||172|
|FEG 1190 20 61 AA LM||46.867||38.750||43.000||42.920||41.270||7||189|
|QCB reference||Outer holes||Inner holes||20o spur gear|
|FEG 506 20 61 AA LM||18.000||8||13.130||12||19.500||4||78||7095|
|FEG 639 20 61 AA LM||23.250||12||18.130||15||24.750||4||99||7095|
|FEG 740 20 61 AA LM||27.250||15||22.130||18||28.750||4||115||7095|
|FEG 836 20 61 AA LM||31.000||18||26.130||18||32.500||4||130||7095|
|FEG 945 20 61 AA LM||35.000||18||30.000||18||36.667||3||110||9450|
|FEG 1047 20 61 AA LM||38.880||18||34.000||20||40.667||3||122||9450|
|FEG 1190 20 61 AA LM||44.630||20||39.880||24||46.333||3||139||9450|
|Standard grease fitting||# at least 2x 1/4"-28 UNF 2B on inner ring|
The FEG20 Imperial Series is interchangeable with bearings from other manufacturers such as Rotek, Kaydon, AVON, Silverthin . However there may be variations to this rule (e.g. OEM variants) and we invite you to refer to our technical staff for assistance.
|FEG 506 20 61 AA LM||RK6-16E1Z||L6-16E9Z||SK6 16 EZ||716 MA1|
|FEG 639 20 61 AA LM||RK6-22E1Z||L6-22E9Z||SK6 22 EZ||721 MA1|
|FEG 740 20 61 AA LM||RK6-25E1Z||L6-25E9Z||SK6 25 EZ||725 MA1|
|FEG 836 20 61 AA LM||RK6-29E1Z||L6-29E9Z||SK6 29 EZ||729 MA1|
|FEG 945 20 61 AA LM||RK6-33E1Z||L6-33E9Z||SK6 33 EZ||733 MA1|
|FEG 1047 20 61 AA LM||RK6-37E1Z||L6-37E9Z||SK6 37 EZ||737 MA1|
|FEG 1190 20 61 AA LM||RK6-43E1Z||L6-43E9Z||SK6 43 EZ||742 MA1|
- Double drilled or custom drilling patterns
- Higher precision bearings with location diameters
- Reduced internal clearance (Class 5 & Class 6)
- Black oxide (standad) or zinc plating (to order) for enhanced corrosion protection
- Epoxy paint or even Nylon coated units to special order
- Stainless steel or aluminium versions
FUN20 Imperial Series slewing rings are normally produced in 50Mn / C45.
Standard FEG20 Imperial 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.
A land riding NBR (nitrile rubber) seal strip is standard. VITON seals can be supplied to order.
The FEG20 Imperial series has a standard 20° pressure angle, uncorrected spur gear cut into the outer ring.
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. FEG20 Imperial 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!
|QCB reference||PDF print||CAD.dwg||MODEL.STP|
|FEG 506 20 61 AA LM||FEG 506 20 61.pdf||FEG 506 20 61.dwg||FEG 506 20 61.STP|
|FEG 639 20 61 AA LM||FEG 639 20 61.pdf||FEG 639 20 61.dwg||FEG 639 20 61.STP|
|FEG 740 20 61 AA LM||FEG 740 20 61.pdf||FEG 740 20 61.dwg||FEG 740 20 61.STP|
|FEG 836 20 61 AA LM||FEG 836 20 61.pdf||FEG 836 20 61.dwg||FEG 836 20 61.STP|
|FEG 945 20 61 AA LM||FEG 948 20 61.pdf||FEG 945 20 61.dwg||FEG 945 20 61.STP|
|FEG 1047 20 61 AA LM||FEG 1047 20 61.pdf||FEG 1047 20 61.dwg||FEG 1047 20 61.STP|
|FEG 1190 20 61 AA LM||FEG 1190 20 61.pdf||FEG 1190 20 61.dwg||FEG 1190 20 61.STP|
Do you have a special project?
Need some advice? We can help!