BOA Concentric Locking Collar

BOA

Specifications: 

Housing Styles 
Pillow Block, Flange, Take Up, and ER Style

Locking Styles 
Setscrew, Concentric and Eccentric

Bore Diameter Size Range 
1” to 2 7/16” 
20 to 60mm

Housing Materials 
Cast & Ductile Iron, Stamped Steel

Features:

BOA Concentric Locking Collar 

The BOA concentric locking collar clamp design results in near-perfect concentricity of the shaft to the bearing bore. It also provides near-perfect ball path roundness and reduces fretting corrosion. This design eliminates shaft damage from setscrew locking and minimizes bearing-induced vibration for smoother, quieter operation. The collar has a Torx head cap screw that resists stripping 12 times longer than hex screws.

 

Setscrew Locking

120° spaced, balanced three-point contact minimizes inner ring distortion vibration while reducing noise and improving reliability. Precision-manufactured diamond-faceted setscrews contribute to improved clamping and resistance to back-out.


Sealing 
A positive-contact molded nitrite rubber contact seal with an auxiliary flinger element comes standard. The contact seal allows grease purge and helps keep contamination out of the bearing. The flinger provides a rotating shield that helps direct contamination away from the seal.


Anti-Rotation Rivet 
An anti-rotation rivet prevents outer ring rotation (creep) within the housing.

Semi-Solid Cast Iron Base 

This rugged base design provides an excellent mounting foundation. This is integral to preventing sheet metal “buckling”.

Zone Hardened Inner Race 
Browning® bearings incorporate a unique heat treat process that hardens the inner race only where necessary. The location being directly under the ball path itself. The zone hardened inner race provides improved lock reliability due to less distortion at the setscrew location. Additionally, improved thread conformity results in better clamping and resistance to setscrew back-out.


Identification Marking 

Browning® bearing units with a cast-iron housing include a sticker with the part description. The bearing units also include a Browning® branded washer under the lubrication fitting. This provides simple verification of the part number during installation and replacement.

Air Handling “AH” Option 
The Browning® air handling mounted ball bearing offers the same features as the standard Browning® mounted ball bearing in addition to the following air handling features:

AH Housing Fit 
Air Handling "AH" ball bearings are manufactured with a controlled housing fit that allows the bearing to properly self-align when mounted on lightweight frames commonly found on air handling equipment.

Noise Test 
All Air Handling "AH" bearings must pass a two-stage noise testing verification for quiet operation. This is in order to meet the noise level standards of the air handling industry.

 

Benefits:

We offer popular shaft sizes and housing configurations in the normal and medium-duty series made collar to order and from stock. These products are offered in both setscrew and BOA concentric locking collar styles.


Concentric Mounted Ball Bearings
Concentric Mounted Ball Bearings
Concentric Mounted Ball Bearings

Browning® mounted ball bearings offer multiple housing styles, materials, and configurations. This features an extended inner race insert bearing with ball riding nylon retainer. The insert features a rivet to help prevent outer ring rotation and is available with the following locking mechanisms: 

 

  •  Setscrew
  •  Eccentric
  •  BOA™ concentric locking collar 

The contact seal reduces grease loss while reducing friction. The black oxide treated flinger helps prevent contaminant entry. Together they provide a good balance of protection. Depending on your preference, these bearings are available in both inch and metric units. They also come in a variety of housings. Additionally, industry-specific solutions are available as illustrated on the following pages.


Additional Data

Series
 Housing Style
Duty
Setscrew lock
Concentric lock
Eccentric lock
 Housing Material
 Standard Seal
 Inch Size
 Metric Size
 VP 100
 Two Bolt Pillow Block-High Base
 Intermediate  VPS 100
   VPE 100
 Cast Iron
 Contact  1/2"- 2 3/16"
 N/A
 VP 200
 Two Bolt Pillow Block-High Base  Standard  VPS 200
 VPB 200
 VPE 200
 Cast Iron  Contact +  Flinger
 1/2"- 2 15/16"  20mm-60mm
 VP 300
 Two Bolt Pillow Block-High Base  Medium  VPS 300
 VPB 300    Cast Iron  Contact +  Flinger  1"- 2 3/16"  N/A
 VPL 100
 Two Bolt Pillow Block-High Base  Intermediate  VPLS 100
   VPLE 100
 Cast Iron  Contact  1/2"- 2 3/16"  N/A
 VPL 200  Two Bolt Pillow Block-High Base  Standard  VPLS 200
 VPLB 200  VPLE 200
 Cast Iron  Contact +  Flinger  1/2"- 2 7/16"  N/A
 VPD 200  Two Bolt Pillow Block-High Base  Standard  VPDS 200
     Cast Iron  Contact +  Flinger  1 3/16"- 1 1/2"  N/A
 VTB 100
 Tapped Base Pillow Block
 Intermediate      VTBE 100
 Cast Iron  Contact  3/4"- 2"  N/A
 VTB 200  Tapped Base Pillow Block  Standard  VTBS 200
 VTBB 200
   Cast Iron  Contact +  Flinger  1/2"- 2"  20mm-60mm
 VF4 100
 Four Bolt Flange
 Intermediate  VF4S 100
   VF4E 100
 Cast Iron  Contact  1/2"- 2 3/16"  N/A
 VF4 200  Four Bolt Flange  Standard  VF4S 200
 VF4B 200
 VF4E 200  Cast Iron  Contact +  Flinger  1/2"- 2 7/16"  20mm-60mm
 VF4 300  Four Bolt Flange  Medium  VF4S 300
 VF4B 200    Cast Iron  Contact +  Flinger  1"- 2 3/16"  N/A
 VF2 100  Two Bolt Flange  Intermediate  VF2S 100
   VF2E 100
 Cast Iron  Contact  1/2"- 2 3/16"  N/A
 VF2 200  Two Bolt Flange  Standard  VF2S 200
 VF2B 200  VF2E 200
 Cast Iron  Contact +  Flinger  1/2"- 2 7/16"  20mm-60mm
 VF2 300  Two Bolt Flange  Medium  VF2S 300
 VF3B 300    Cast Iron  Contact +  Flinger  1"- 2"  N/A
 VFB 200
 Flange Bracket
 Standard  VFBS 100
 VFBB 200
   Cast Iron  Contact +  Flinger  3/4"- 2""  N/A
 VFC 200
 Piloted Flange Cartridge
 Standard  VFCS 200
 VFCB 200
   Cast Iron  Contact +  Flinger  1 1/5"- 2 7/16"  N/A
 VFC 300
 Piloted Flange Cartridge  Medium  VFCS 300
 VFCB 300    Cast Iron  Contact +  Flinger  1"- 2 1/4"  N/A
 VTW 100
 Wide Slot Take Up
 Intermediate  VTWS 200
   VTWE 100
 Cast Iron  Contact  3/4"- 2 3/16"  N/A
 VTW 200  Wide Slot Take Up  Standard  VTWS 200
   VTWE 200  Cast Iron  Contact +  Flinger  1/2"- 2 7/16"  N/A
 VTW 300  Wide Slot Take Up  Medium  VTWS 300
     Cast Iron  Contact +  Flinger  1"- 2 1/4"  N/A
 SF  Center Pull Take Up Frame
 Standard  xSFxx      N/A  N/A  1/2"- 2 7/16"  N/A
 TF  Top Mount Take Up Frame
 Standard  xTFxx      N/A  N/A  3/4"- 2 7/16"  N/A
 VP 100M
 Pillow Block
 Intermediate  VPS100-M      Double Iron
 Contact  1/2"- 1 7/16"  N/A
 VF2 100M
 Two Bolt Flange  Intermediate  VF2S100-M      Double Iron  Contact  1/2"- 1 7/16"  N/A
 VF3 100M
 Three Bolt Flange  Intermediate  VF3S100-M      Double Iron  Contact  1/2"- 1 7/16"  N/A
 SSP 100
 Pillow Block  Light  SSPS 100      Stamped Steel
 Contact  7/8"- 1 1/4"  N/A
 SSRP100  Pillow Block  Light  SSRPS 100
     Stamped Steel with Rubber Grommet
 Contact  3/4"- 1"
 N/A
 SSF4 100  Four Bolt Flange  Light  SSF4S 100
     Stamped Steel  Contact  1 1/2"-1 15/16"  N/A
 SSF3 100  Three Bolt Flange  Light  SSF3S 100
     Stamped Steel  Contact  3/4"- 1 7/16"  N/A
 SSF3T 100  Three Bolt Flange  Light  SSF3TS 100
     Stamped Steel  Contact  3/4"- 1 1/4"  N/A
 SSF2 100
 Two Bolt Flange  Light  SSF2S 100
     Stamped Steel  Contact  1/2"- 1 1/4"  N/A
 RUBR 100
 Rubber Grommet
 Light  RUBRS 100
 RUBRB 100
 RUBRE 100
 Rubber  Contact  1/2"- 1"  N/A
 SL 100
 Cylindrical O.D. Insert
 Light  SLS 100
     N/A  Contact  1/2"- 1 1/2"  N/A
 L 100  Insert  Light  LS 100
     N/A  Contact  1/2"- 1 15/16"  N/A
 LR 100  Insert  Light  LRS 100
     N/A  Contact  3/4"- 1 1/4"  N/A

 V 100

 Insert  Intermediate  VS 100    VE 100
 N/A  Contact  1/2"- 2 3/16"  N/A
 V 200
 Insert  Standard  VS 200
 VB 200
 VE 200
 N/A  Contact +  Flinger  1/2"- 2 7/16"  20mm-60mm
 V 300
 Insert  Medium  VS 300
 VB 300    N/A  Contact +  Flinger  1"- 2 3/16"  N/A
 VER 200
  Cylindrical O.D. Insert  Standard  VER 200
     N/A  Contact +  Flinger  1/2"- 2 7/16"  N/A
 

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