MultiFit Bracket logo

Key Advantages:

  • MultiFit Brackets provide a solid and adjustable base using existing motor retaining bolts to mount a Helwig Bearing Protection Kit™ without drilling and tapping.  MultiFit Brackets can cover a wide range of shaft sizes.
  • These brackets were designed with versatility in mind, catering to field installs, motor shops, and harsh environments
  • Components are in-stock for fast turnaround

IDEAL MOUNTING ACCESSORY FOR MOTOR SHOPS & FIELD INSTALLS

multifit bracket example four bolt

1-Bolt

multifit bracket example 2 bolt

2-Bolt

multifit bracket example 3 bolt

3-Bolt

multifit bracket example

4-Bolt

For motors without a flat face and/or counterbored retaining bolts, please contact Helwig Carbon.

Use the following 4-step process to determine the best MultiFit Bracket solution for your application!

Step 1: Determine and select a retaining bolt pattern (Use example motor images below)

Step 2: Select the unit of measure (inch or mm)

Step 3: Measure and input motor shaft diameter
Step 4: Measure and input motor bolt distance
Press Submit

1-Bolt

Single bolt

2-Bolt

Single bolt

3-Bolt

Single bolt

4-Bolt

Single bolt
 

Preferred Unit of Measurement

InchesMillimeters

Shaft Diameter

Enter
 

Bolt Distance

Submit
 
placeholder imageBPK-IM5-012245MF.1Add To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts1Shaft Size Range:0.5-2 in13-51mmBolt Spacing Range:2.5-4.6 in64-117 mm
 
placeholder imageBPK-IM5-012960MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts1Shaft Size Range:0.5-2 in13-51mmBolt Spacing Range:3.25-6 in83-152 mm
 
placeholder imageBPK-SB-012960MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts1Shaft Size Range:2.01-4.25 in51-108mmBolt Spacing Range:3.26-6 in83-152 mm
 
placeholder imageBPK-IM5-241561MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts2Shaft Size Range:0.5-1.5 in13-38mmBolt Spacing Range:2-6.1 in51-155 mm
 
placeholder imageBPK-IM5-242268MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts2Shaft Size Range:1.25-2.25 in32-57mmBolt Spacing Range:2.85-6.8 in72-173 mm
 
placeholder imageBPK-IM5-243078MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts2Shaft Size Range:2-3 in51-76mmBolt Spacing Range:3.75-7.8 in95-198 mm
 
placeholder imageBPK-IM5-243788MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts4.5Shaft Size Range:2.75-3.75 in70-95mmBolt Spacing Range:3.75-8.8 in114-224 mm
 
placeholder imageBPK-IM5-032264MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts3Shaft Size Range:1.25-2.25 in32-57mmBolt Spacing Range:2.9-6.4 in74-163 mm
 
placeholder imageBPK-IM5-033067MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts3Shaft Size Range:2-3 in51-76mmBolt Spacing Range:3.25-6.75 in83-171 mm
 
placeholder imageBPK-IM5-033773MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts3Shaft Size Range:2.75-3.75 in70-95mmBolt Spacing Range:3.9-7.3 in99-185 mm
 
placeholder imageBPK-IM5-241561MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts4Shaft Size Range:0.5-1.5 in13-38mmBolt Spacing Range:1.41-4.31 in36-110 mm
 
placeholder imageBPK-IM5-242268MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts4Shaft Size Range:1.25-2.25 in32-57mmBolt Spacing Range:2.02-4.81 in51-122 mm
 
placeholder imageBPK-IM5-043062MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts4Shaft Size Range:2-3 in51-76mmBolt Spacing Range:3.375-6.125 in86-156 mm
 
placeholder imageBPK-IM5-043762MFAdd To CartLearn MoreGet A QuoteBPKIM5Retainer Bolts4Shaft Size Range:2.75-3.75 in70-95mmBolt Spacing Range:3.45-6.125 in88-156 mm
 
placeholder imageBPK-SB-242268MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts2Shaft Size Range:1.25-2.25 in32-57mmBolt Spacing Range:2.85-6.8 in72-173 mm
 
placeholder imageBPK-SB-243078MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts2Shaft Size Range:2-3 in51-76mmBolt Spacing Range:3.75-7.8 in95-198 mm
 
placeholder imageBPK-SB-243788MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts2Shaft Size Range:2.75-3.75 in70-95mmBolt Spacing Range:4.5-8.8 in114-224 mm
 
placeholder imageBPK-SB-032264MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts3Shaft Size Range:1.25-2.25 in32-57mmBolt Spacing Range:2.9-6.4 in74-163 mm
 
placeholder imageBPK-SB-033067MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts3Shaft Size Range:2-3 in51-76mmBolt Spacing Range:3.25-6.75 in83-171 mm
 
placeholder imageBPK-SB-033773MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts3Shaft Size Range:2.75-3.75 in70-95mmBolt Spacing Range:3.9-7.3 in99-185 mm
 
placeholder imageBPK-SB-242268MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts4Shaft Size Range:1.25-2.25 in32-57mmBolt Spacing Range:2.02-4.81 in51-122 mm
 
placeholder imageBPK-SB-043062MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts4Shaft Size Range:2-3 in51-76mmBolt Spacing Range:3.375-6.125 in86-156 mm
 
placeholder imageBPK-SB-043762MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts4Shaft Size Range:2.75-3.75 in70-95mmBolt Spacing Range:3.45-6.125 in88-156 mm
 
placeholder imageBPK-SB-044782MFAdd To CartLearn MoreGet A QuoteBPKSBRetainer Bolts4Shaft Size Range:3.5-4.75 in89-121mmBolt Spacing Range:4.5-8.125 in114-206 mm
 
placeholder imageBPK-AM-044782MFAdd To CartLearn MoreGet A QuoteBPKAMRetainer Bolts4Shaft Size Range:3.5-4.75 in89-121mmBolt Spacing Range:4.5-8.125 in114-206 mm
 
placeholder imageBPK-AM-045588MFAdd To CartLearn MoreGet A QuoteBPKAMRetainer Bolts4Shaft Size Range:4.25-5.5 in108-140mmBolt Spacing Range:4.5-8.75 in114-222 mm
 
placeholder imageBPK-AM-046291MFAdd To CartLearn MoreGet A QuoteBPKAMRetainer Bolts4Shaft Size Range:5-6.25 in127-159mmBolt Spacing Range:4.85-9.25 in123-235 mm
 
placeholder imageAdd To CartLearn MoreGet A QuoteBPKRetainer BoltsShaft Size Range:- in-mmBolt Spacing Range:- in- mm
 
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From Probe to Patent

Helwig Carbon Products, Inc. is proud to announce that the BPK-Probe™ has been issued US Patent #10942203.  This major innovation provides a means to detect induced shaft currents in motors controlled by VFD drives.

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WEG Motors with Bearing Protection Kits™

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test for shaft voltage

Why We Test For Shaft Voltage (And You Should, Too!)

Bearing discharges damage the motor bearings in two ways: the degradation of the bearing grease the roller assemblies are suspended in, and by electrostatic machining (ESD) of the bearings and bearing raceways. The combination of the two can be devastating to the life of the motor bearing and should be mitigated to avoid costly repairs and machine downtime.

A span of 6 bpk brushes on our silver graphite brushes page, example of shaft grounding solutions from Helwig Carbon, Bearing Protector Comparison: Carbon Fiber Rings vs. BPKs blog post, BPK Spread 3D Renders

Why Motor OEMs are switching to Helwig’s Bearing Protection Kits™

Helwig Carbon has been supplying OEM motor manufacturers with shaft grounding solutions since the mid-1990s. Since that time, the use of VFDs to control electric motors has vastly increased, thus increasing the need for shaft grounding and the demand for our after-market Bearing Protection Kits™ (BPKs).

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Electric motor bearings fail for a variety of reasons but the two most common reasons for electrical failure are circulating and common mode currents. Circulating currents are found in all motors. The severity of the problem and therefore the risk to the motor bearings is

BPK Probe ROI Blog, the BPK-Probe™ is an easy to use instrument specifically designed to measure the risk for damage to motor bearings, gearboxes, or other devices.

Achieving an ROI with the BPK-Probe™

Problem Overview: The Patent Pending BPK-Probe™ is an easy to use instrument specifically designed to measure the risk for damage to motor bearings, gearboxes, or other devices that are susceptible to electrical discharges, also known as common-mode. These discharges are typically the result of

Even the strongest Juggernaut needs a little help from a small silver graphite brush.

Even the strongest Juggernaut needs a little help from a small silver graphite brush.

Even the strongest Juggernaut needs a little help from a small silver graphite brush. The Century® JuggerNaut® condenser fan motor from Regal Beloit® comes standard with a BPK-IM2, our smallest shaft grounding option.  The IM2 will provide many years of protection against harmful common mode currents passing through the motor bearings. These motors are designed as a drop-in replacement for existing models, to work with VFDs, and withstand high operating temperatures.

BPK group, used for image in blog outlining New Application Brief and VFD Bearing Damage

New Application Brief: Bearing Protection Kits in Universities

Check out our newest application brief: “Bearing Protection Kits in Universities”.  This application brief covers the usage of Helwig’s Bearing Protection Kits at the University of Nebraska-Lincoln. UNL was looking for reliable bearing protection after they experienced motor failure due to VFD bearing damage, despite using a popular competitor’s solution. They tested our BPK-4 shaft grounding solution and were convinced that our unit would protect their motors from harmful shaft discharge. UNL now has Helwig’s BPK solution specified into their requirements for any motors controlled by VFDs, thus preventing further VFD bearing damage.

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