Grizzly G0457 Blade Tensioning, Adjusting Support Bearings, To tension the bandsaw blade

Page 26

Blade Tensioning

A properly tensioned blade is essential for mak- ing accurate cuts and is a prerequisite for making many bandsaw adjustments. The blade tension scale shows the approximate tension, but the steps below will allow you to get the optimum ten- sion for the installed blade.

To tension the bandsaw blade:

1. Make sure you have completed the Test Run

procedure on Page 21 and that the blade is

tracking properly.

2. Raise the upper blade guide assembly as

high as it will go, and adjust the upper and

lower guide blocks as far away from the blade

as possible.

Note: This procedure will NOT work if the

guide blocks have any contact with the

blade.

3. Adjust blade tension until the mark on the

blade tension scale matches the size of the

installed blade.

Note: This scale can only be considered a

general guide. Complete the following steps

to accurately set blade tension.

NOTICE

After blade tension and tracking are set cor- rectly, you MUST properly adjust the upper and lower support bearings and guide-block assemblies into position before cutting.

Adjusting Support

Bearings

The support bearings are positioned behind the blade for support during cutting operations. Proper adjustment of the support bearings is an important part of making accurate cuts and also keeps the blade teeth from coming in contact with the guide bearings while cutting.

To adjust the support bearings:

1.Make sure that the blade is tracking properly and that it is correctly tensioned.

2.DISCONNECT BANDSAW FROM POWER!

3.Familiarize yourself with the support bearing controls shown in Figure 29.

4.

Turn the bandsaw ON.

5.

Slowly release the tension one quarter of a

 

turn at a time. When you see the bandsaw

 

blade start to flutter, stop decreasing the ten-

 

sion.

6.

Now, slowly increase the tension until the

 

blade stops fluttering, then tighten the tension

 

another quarter turn.

7.

Look at what the tension gauge reads and

 

use that as a guide for tensioning that blade

 

in the future.

 

Note: Always de-tension the blade after use

 

to increase blade life and reduce strain on the

Upper Knurled

Knob

Support

Bearing

Thumbscrew

bandsaw components.

-24-

Lock Bolt

Figure 29. Support bearing controls.

G0457 14" Industrial Bandsaw (Mfg. Since 5/11)

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Contents Model G0457 Industrial Bandsaw Page Table of Contents Introduction Manual Accuracy Contact InfoIdentification Machine Data Sheet Cutting Capacities Safety Safety Instructions for MachineryUnattended OPERATION. Never­ leave­ Additional Safety Instructions for Bandsaws Full-Load Current Rating Power SupplyAvailability Circuit InformationGrounding Requirements Typical 5-20 plug and receptacleVoltage Conversion Disabling & Locking SwitchExtension Cords Unpacking SetupNeeded for Setup Description QtyHardware Recognition Chart Hardware Not shown Contents Figures QtyInventory Site Considerations Clean UpPlacement Location Floor LoadAssembly To assemble the bandsawTable installed on trunnions Installed front rail Dust Collection To connect a dust collection hoseChanges in the blade tension may change the blade tracking Blade TrackingTo center track the blade To test run the machine Test RunTable Stop Calibration Blade Tracking onTable Alignment To calibrate the pointer on the table tilt scaleTo align the fence parallel with the miter slot Fence AlignmentTo calibrate the miter gauge Blade Tensioning Adjusting Support BearingsTo adjust the support bearings To tension the bandsaw bladeTop View Blade Guide Adjustments To adjust the upper and lower blade guidesOperations Basic ControlsIrregular Cuts OverviewStraight Cuts Basic Cutting TipsTo tilt the table Workpiece InspectionTable Tilt To rip with the Model G0457 To adjust guide postGuide Post Ripping CrosscuttingResawing To crosscut with the Model G0457Cutting Curves To resaw a workpieceStacked Cuts To complete a stacked cutBlade Width Blade InformationBlade Length Tooth StyleBlade Breakage Tooth PitchBlade Care Most common causes of blade breakage areTo replace the blade Blade ChangesTo remove the blade Accessories Half-mask respirator with disposable Cartridge filters H5408-Blade Tensioning GaugeG8984-Single Roller Stand G1928-Bandsaw HandbookG8983-Tilting Roller Stand G8985-5 Roller StandSchedule MaintenanceCleaning Unpainted Cast IronGuide Post Blade Tension LeadscrewTo redress the rubber tires Redressing Rubber TiresTable Trunnions Motor & Electrical ServiceTroubleshooting Adjust the feet on the bottom of the stand relocate To check the V-belt Checking V-BeltTensioning V-Belt Steps Tools Needed QtyReplacing V-Belt To replace the V-beltSkewing your fence Shimming Table Blade LeadCorrect blade lead To shim the tableShifting Table To check if your wheels are coplanar Wheel AlignmentComponents and Hardware Needed Qty Coplanarity Gauge Wiring Wiring Safety Instructions110V Main Main Parts List DescriptionTrunnion Bracket Cast Iron Components DescriptionStand Labels Rear of MachineWarranty Card CommentsGrizzly INDUSTRIAL, INC BOX BELLINGHAM, WAWarranty & Returns Order Hours a DAY

G0457 specifications

The Grizzly G0457 is a versatile and robust woodworking tool designed to meet the needs of both amateur woodworkers and professional craftsmen. This cabinet-style bandsaw offers a blend of power, precision, and durability, making it an essential addition to any serious workshop.

One of the standout features of the G0457 is its powerful 2 HP motor, which provides ample strength to cut through a variety of materials, including hardwoods and softwoods. This motor is designed for consistent performance, minimizing the risk of stalling during operation. Furthermore, the bandsaw is equipped with a large cutting capacity, boasting a 14-inch resaw height and a 13-inch maximum cutting width, enabling users to tackle larger projects with ease.

The construction of the Grizzly G0457 is another key highlight. The machine features a solid cast iron frame that enhances stability and reduces vibrations during operation. This sturdy design contributes to improved accuracy, ensuring that cuts are clean and true. Furthermore, the oversized wheels are made of aluminum, allowing for smoother operation and a longer lifespan.

In terms of technology, the G0457 utilizes a precision-machined aluminum fence system. This system is designed for easy adjustments, providing users with the ability to make quick and accurate cuts. The bandsaw also includes a blade tension release, which simplifies blade changes and prolongs the lifespan of the blade itself. Additionally, the quick-release blade tension lever allows for easy adjustments, enhancing overall efficiency.

Safety features are also a priority in the design of the Grizzly G0457. It includes an easy-to-access power switch and a blade guard to protect users from potential injuries. The adjustable upper and lower blade guides ensure optimal performance and safety during operation.

The G0457 is also designed with convenience in mind. It includes a built-in dust port to help maintain a clean workspace. This feature minimizes dust accumulation, promoting a healthier environment and improving visibility while cutting.

In summary, the Grizzly G0457 bandsaw is a powerful and reliable tool that combines innovative features, robust construction, and user-friendly design. Whether you are ripping boards, resawing, or making intricate cuts, the G0457 stands out as a reliable choice for anyone serious about woodworking. Its attention to detail, performance capabilities, and safety features make it an invaluable asset in any workshop.
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