Screw Conveyor Hanger Bearings
Hanger Bearing Styles Style 216 Hanger Bearing Style 226 Hanger Bearing Style B Hanger BearingHanger bearings provide a bearing surface to support a screw section when multiple screw sections are used in a screw conveyor. Hanger bearings are journal or plain type bearings that mount in hangers and are replaceable when worn. Many different hanger bearing materials are available, depending on the application. Style 216 and 226 bearings are the most widely used and are in stock at KWS.
KWS hanger bearing recommendations are listed in the Component Series Table of the KWS Screw Conveyor Engineering Guide for the specific bulk material to be conveyed. The most common hanger bearing materials are described in the table below. Please consult KWS Engineering for specific hanger bearing recommendations.
| Bearing Material | RPM Max |
Temp Max (°F) | Wear Resist* | Industry Uses | Comments |
|---|---|---|---|---|---|
| Nylatron (NR) | 60 | 180 | 3 | Chemical handling, grain, feed | Self lubricating, very low load capacity |
| UHMW | 60 | 160 | 6 | Food, Ice | USDA approved, doesn’t swell in water |
| Gatke (G) | 75 | 250 | 7 | Medium temp applications (alternate for Hard Iron) | Low load capacity, Food Grade |
| Hard Iron (H) | 75 | 400 | 9 | Lime, Cement, Salt, Gypsum | Requires hardened shaft, can be noisy, lube req’d in some applications |
| Wood (W) | 175 | 160 | 4 | Grain, Feed, Fertilizer | Self lubricating, good general purpose |
| Plastech (P) | 100 | 160 | 6 | Grain, Food | Food grade |
| Bronze (BR) | 150 | 850 | 7 | Grain, Feed, Processing | Self lubricating, high quality bearings, high load capacity |
| Ball Bearing (BB) | 400 | 180 | 1** | High speed, low loading | Screw action tends to force product thru seals reducing bearing life |
| Stellite (S) | 50 | 1000 | 10 | Very high temp applications, metal processing, ceramics | Requires stellite insert in shaft |
* 0 = Least, 10 = Highest ** Depending on bearing type and seal arrangement
Hanger Bearing Styles
Style 216
Style 216 hanger bearings are used in 216, 316, and 230 hangers, and are manufactured to CEMA dimensional standards. Style 216 hangers and hanger bearings offer superior rigidity and are excellent for extra heavy-duty applications.
Style 226
Style 226 hanger bearings are used in 226, 326, and 220 hangers, and are manufactured to CEMA dimensional standards. Style 226 hangers and hanger bearings have clearance for bulk materials to pass and are excellent for normal and heavy-duty applications.
Style B
Style B hanger bearings are used in 660 and 670 hangers, and are manufactured to CEMA dimensional standards. Style B hanger bearings utilize a self-aligning ball bearing for lower power consumption and quieter operation. The bearing is sealed to minimize contamination.
Style 216 Screw Conveyor Hanger Bearing
| Shaft Dia. | A | B | C | D | E (Dia.) |
Part Number | Weight (Lbs.) • |
|---|---|---|---|---|---|---|---|
| 1” | NOT AVAILABLE | ||||||
| 1-1/2” | 1-15/16” | 1-9/16” | 2-3/4” | 1-3/8” | 2-1/4” | HGB216112#* | 2.0 |
| 2” | 1-15/16” | 1-9/16” | 3-3/4” | 1-5/8” | 3-1/4” | HGB2162#* | 4.0 |
| 2-7/16” | 2-15/16” | 2-1/4” | 4-1/2” | 2” | 4” | HGB2162716#* | 9.2 |
| 3” | 2-15/16” | 2-1/4” | 5” | 2-5/16” | 4-1/2” | HGB2163#* | 10.8 |
| 3-7/16” | 3-15/16” | 3-1/4” | 5-1/2” | 2-7/16” | 4-7/8” | HGB2163716#* | 15.2 |
| 3-15/16” | 3-15/16” | 3-1/4” | 6” | 2-11/16” | 5-3/8” | HGB21631516#* | 17.3 |
| 4-7/16” | 4-15/16” | 4-1/4” | 7-3/16” | 3-1/4” | 6-3/16” | HGB2164716#* | 31.7 |
* KWS Stock Component • All weights are based on hard iron. # Bearing Material (UHMW, Gatke, Hard Iron, Wood, Bronze, Stellite)
Note: Only Hard Iron and Bronze are available in 3-15/15” and 4-7/16”.
Style 226 Screw Conveyor Hanger Bearing
| Shaft Dia. | A | B | C | D | E (Dia.) | Part Number | Weight (Lbs.) • |
|---|---|---|---|---|---|---|---|
| 1” | 1-7/16” | 1-1/8” | 5/16” | 1/2” | 1-3/16” | HGB2261#* | 2 |
| 1-1/2” | 1-15/16” | 1-9/16” | 1/2” | 9/16” | 2-3/16” | HGB226112#* | 2 |
| 2” | 1-15/16” | 1-9/16” | 1/2” | 9/16” | 2-13/16” | HGB2262#* | 4 |
| 2-7/16” | 2-15/16” | 2-1/4” | 3/4” | 3/4” | 3-3/16” | HGB2262716#* | 9 |
| 3” | 2-15/16” | 2-1/4” | 3/4” | 3/4” | 4-1/16” | HGB2263#* | 11 |
| 3-7/16” | 3-15/16” | 3-1/4” | 1-1/4” | 3/4” | 4-3/4” | HGB2263716#* | 15 |
| 3-15/16” | 3-15/16” | 3-1/4” | 1-1/4” | 3/4” | 5-1/4” | HGB22631516# | 17 |
| 4-7/16” | 4-15/16” | 4-1/4” | 1-3/4” | 3/4” | 5-13/16” | HGB2264716# | 32 |
• All weights are based on hard iron. # Bearing Material (Nylatron, UHMW, Gatke, Hard Iron, Wood, Plastech, Bronze, Stellite) * KWS Stock Component
Note: Only UHMW and Wood are available in the 1” size.
Style B Screw Conveyor Hanger Bearing
| Shaft Dia. | A | B | C | Straight Thread Pipe D |
Part Number | Weight |
|---|---|---|---|---|---|---|
| 1” | 1-1/2” | 2-1/2” | 3-1/8” | 3/4” | HGBB1 | 3 |
| 1-1/2” | 1-15/16” | 2-7/8” | 4” | 3/4” | HGBB112 | 3 |
| 2” | 1-15/16” | 3-1/4” | 4-5/8” | 3/4” | HGBB2 | 4 |
| 2-7/16” | 2-5/16” | 4” | 5-1/2” | 1” | HGBB2716 | 7 |
| 3” | 2-3/8” | 4-7/8” | 7” | 1” | HGBB3 | 15 |
| 3-7/16” | 2-9/16” | 6” | 8-3/8” | 1-1/2” | HGBB3716 | 21 |
