Jet Tools JWBS-18X-3 Overview Bearing Adjustments, Upper Bearing Adjustments

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Overview – Bearing Adjustments

Thrust (back support) bearing are located behind the saw blade and provide support to the back of the blade when the saw is in operation.

Guide bearings are located on either side of the saw blade and provide stability for the blade when the saw is in operation. These bearings rotate on an eccentric shaft so the distance from the blade can be adjusted for optimal performance.

Upper Bearing Adjustments

Unplug the machine from power source before making any adjustments! Blade teeth are sharp - use care when working near the saw blade. Failure to comply may cause serious injury.

Note: Blade tension must be properly adjusted prior to bearing guide setup. Refer to the Adjusting Blade Tension section.

To adjust the thrust bearing (while referring also to Figure 21):

1.Loosen the thumb screw (E) and slide the bearing and bearing post until the space between the thrust bearing (H) and the back edge of the blade (G) is approximately 1/64”.

A convenient way to achieve this spacing is by placing a dollar bill folded twice (four thicknesses) between the blade and support bearing – four thicknesses of a dollar bill is approximately 1/64”.

To adjust the guide bearings (refer to Figure 22):

2.Loosen the locking handle (L) and slide the assembly until the front of the guide bearings rest just behind the gullet of the blade teeth (see inset).

3.Loosen two wing nuts (J1, J2). Rotate the adjustment handles (M) until the guide bearings

(K)rest lightly against the blade (N). Do not force the guide bearings against the side of the blade.

4.Tighten wing nuts (J1, J2 Fig. 22).

Check to make sure the adjustments have not changed and the bearing guides do not pinch the blade.

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Figure 21

Figure 22

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Contents Band Saw More Information WMH Tool Group Warranty WarrantyTable of Contents Page Page JWBS-18X Introduction SpecificationsVolt Operation HP Single Phase MotorGrounding Instructions Feet Extension cordsUnpacking Contents of Shipping ContainerRail Assembly AssemblyHandwheel Mounting the TableAssembling the Fence to Fence Body Fence Assembly and AdjustmentFence Adjustment Miter Gauge Resaw GuideAdjusting 90 Degree Table Stop AdjustmentsInstalling/Changing Blades Blade Tracking Blade TensionUpper Bearing Adjustments Overview Bearing AdjustmentsGuide Gearings Adjustment Lower Bearing AdjustmentsBlade Lead Belt Tension Replacing the V-BeltPulley Alignment Electrical ConnectionsOperation General ProcedureRipping CrosscuttingSaw Blade Selection ResawingBlade Breakage MaintenanceBlade Selection Guide Trouble TroubleshootingReplacement Parts Optional Accessories Band Saw BladesIndex No. Part No Description Size Qty Parts List Upper Wheel AssemblyUpper Wheel Assembly JWBS18X-MFC Parts List Lower Wheel and Motor AssemblyLower Wheel and Motor Assembly Parts List Blade Guide Assembly JWBS18DX-357 Blade Guide Assembly Parts List Table and Fence Assembly 16-18x2 Table and Fence Assembly Electrical Connections Page WMH Tool Group