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Rex MAFS6303F is a 3-3/16" (80.96 mm) bore mounted spherical roller bearing with a cast iron expansion 4-bolt pillow block housing. This 6000 series heavy duty adapter-mounted unit features a Shurlok adapter mounting system and a spring-loaded heavy contact seal for reliable performance in demanding applications.
MODEL 10442701
Contact supplier for technical support on: 800-626-2120
$3,144.69 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable: See conditions
Ability to Relubricate
Yes
Available end cap
Need EXT EC
Available End Cap
NEED EXT EC
Available Seal Type
K Light Contact Lip Seal; M Spring Loaded Heavy Contact Lip Seal (Buna and Viton); Z Clearance Seal; G Triple Lip
Base Length (in)
13.75
Base to centerline height (in)
4
Base Width (in)
3.88
Bearing Brand
REX ROLLER BEARING
Bolt Hole Spacing [Width] (in)
2.13
Bolt Size (in)
5/8
Bore size (in)
3.1875 in
Bore Size (in)
3.1875 in
Cage Material
Engineered Polymer
Clearance
C3 STANDARD
Expansion Capability (in)
0.5
Expansion lock plug
105-95008-23
Expansion Lock Plug
105-95008-23
Fixed vs. Expansion
Expansion
Foot Height (in)
1.63
Grease Fitting Thread Size
1/8 NPT
Height
9.88
Housing Cast Face to Outermost Bearing Face (in)
1.59
Housing coating
Powder coated
Housing Coating
POWDER COATED
Housing Color
Black
Housing construction
Solid
Housing Construction
Solid
Housing material
Cast iron
Housing Material
Cast Iron
Housing style
Pillow block
Housing Style
Pillow Block
Housing type
Pillow Block, Four Bolt, SAF Style
Housing Type
Pillow Block, Four Bolt, SAF Style
Impact style shurlok install tool
105-90425-51
Impact Style Shurlok Install Tool
105-90425-51
Inner Ring Outside Diameter (in)
3.975
Insert
6303U
Length
17.50
Length Through Bore (in)
5.03
Locking collar outside diameter (in)
4.95
Locking device kit
AK106303
Locking Device Kit
AK106303
Locking Type
Tapered Adapter
Lubrication type
EXXON RONEX MP STD
Lubrication Type
EXXON RONEX MP STD
Max distance between bolt holes (in)
11.63
Maximum Speed (RPM)
1400 rpm
Maximum Temperature (C)
107
Maximum Temperature (F)
225
Microlock kit
ML3
Min distance between bolt holes (in)
10.38
Misalignment Capability
±2.0° Misalignment - Dynamic
Misalignment Type
Dynamic
Net Weight
58.00
Overall Length (in)
13.75
Overall width
5.03
Primary seal
Buna spring loaded lip seal
Primary Seal
BUNA SPRING LOADED LIP SEAL
Radial Dynamic Load Capacity (lb)
84330 lb
Radial Static Load Capacity (lb)
90700 lb
Retainer material
Engineered Polymer
Retainer Material
Engineered Polymer
Rolling element
Spherical Roller
Seal kit
MS10
Seal type
Heavy Contact Seal
Series
Solid-housed Pillow Blocks
Setscrew torque (in-lbs)
165-185
Shaft locking collar kit/adapter assembly
AK106303
Shaft Locking Collar Kit/Adapter Assembly
AK106303
Size code
10
Size Code
10
Slot Length (in)
1.31
Unit of dimension
in
Unit of Dimension
IN
Vibration frequency fundamental train
0.0073 cps
Vibration Frequency Fundamental Train
0.0073 cps
Vibration frequency inner ring defect
0.1784 cps
Vibration Frequency Inner Ring Defect
0.1784 cps
Vibration frequency outer ring defect
0.1383 cps
Vibration Frequency Outer Ring Defect
0.1383 cps
Vibration frequency roller spin
0.0628 cps
Vibration Frequency Roller Spin
0.0628 cps
Volume
4.769
Volume unit
GLL
Volume Unit
GLL
Weight unit
LB
Width
6.38
3 3/16" Mounted Spherical Roller Bearing, Cast Iron Expansion 4-Bolt Pillow Block, Shurlok Adapter Mounted, Spring Loaded Heavy Contact Seal
SKU: 495479
Good orice
This stump grinder wheel bearing is expensive and I need two each time I change them. Best price I found anywhere and free shipping here at MRO Supply
Read moreHow do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
| Brand | Lubriplate |
| Model | L0168-035 |
SKU: 495479
Good orice
This stump grinder wheel bearing is expensive and I need two each time I change them. Best price I found anywhere and free shipping here at MRO Supply
Read more