Virtual Esch Saw and Blade Safety Training - 2024.pptx

© 2024 – Esch Construction Supply, Inc.
ESCH™
SAW & BLADE
SAFETY TRAINING™
A perfect safety record is no accident.
Proprietary information, not for distribution

SAFETY
TRAINING
SAW & BLADE
SPECIALISTS
PARTS &
REPAIR
EQUIPMENT
DEMOS
OVER 30 YEARS OF IN-FIELD EXPERIENCE

SAW KICKBACK IN THE NEWS

KICKBACK: INJURY AND DEATH
Employee Sustains Facial Lacerations When Saw Kicks Back
Event Date: 06/15/2017
Establishment Name: Prince Land, Inc.
At 12:30 p.m. on June 12, 2017, Employee #1, employed by a
construction company, was working at a job site. He was using a
Stihl TS 410 saw to cut a clay pipe. The saw blade became
bound, and the saw kicked back, striking Employee #1 under his
chin and against his chest. Emergency services were called, and
Employee #1 was transported to the hospital. He was treated for
a laceration under his chin and chest bruising.
Source: OSHA.gov Accident Report
Employee Is Killed Using A Cut Off Saw
At approximately 12:00 p.m. on July 18, 2016, Employee #1 was
operating a cut off saw cutting a 4inch non-ferrous ceramic drain pipe.
The cut off saw kicked back and the blade struck him in his neck.
Employee #1 died of a severe laceration to his neck causing massive
blood loss.

CUT-OFF SAW SAFETY TRAINING SAVES YOU FROM…

PPE & DUST CONTROL
REACTIVE FORCES
BLADES
Selection, Tips for Successful
Sawing, & Inspection
SAWS
Selection, Inspection, &
Tips for Successful Sawing
GRAPHIC IMAGE
ESCH SAW & BLADE SAFETY TRAINING

BLADE SELECTION
Asphalt Concrete Combination Concrete Ductile,
PVC, Cast Iron

BLADE SELECTION: FACTORS AFFECTING BLADE CHOICE
1. The Saw
Saw Horsepower and RPM, Condition of the Saw,
Blade Arbor Size
2. Material Being Cut
Hardness and Size of Aggregate, Type of Sand,
Amount of Steel
3. Operator’s Experience
Water Volume, Cutting Depth, Cutting Pressure
4. Blade Quality & Type
Segment Bond Hardness, Diamond Quality,
Diamond Concentration, Segment Width

TIPS FOR BLADE SUCCESS
Factory Dressed Blade
Directional Arrows
- painted
- etched
- stamped
⚠ WARNING: Using the blade in the wrong direction
reduced the life and speed of the cut. In some cases, the
blade will stop cutting and lead to failure.
BLADE DIRECTION

BLADE RPMS & CUTTING DEPTHS
DIAMOND BLADE OPERATING SPEEDS
Diameter
12” High Speed
14” High Speed
16” High Speed
Maximum Safe Speed (RPM)
6300
5400
4725
Diameter
12”
14”
16”
Maximum Cutting Depth
4”
5”
6”
MAXIMUM BLADE CUTTING DEPTH FOR CUT-OFF SAWS

CHOOSING THE RIGHT BLADE ARBOR
Stihl Saws = 20mm arbor
Husqvarna Saws = 1” or 20 mm arbor
Arbor size affects
- Safety
- Saw Maintenance
- Blade Wear
Avoid using bushings
20 mm 1 in
ARBOR SIZE

TECHNIQUE
- Allow the Blade to do the work
- Most blade problems occur from
forcing the blade into the cut
BLADES DON’T CUT – THEY GRIND

DIAMOND BLADE INSPECTION
6 COMMON BLADE FAILURES
1. SEGMENT LOSS
2. CRACKED SEGMENTS
3. OVERHEATING
4. CRACKED CORE
5. BREAKOUT
6. UNDERCUTTING

SEGMENT LOSS
Cause:
The material you’re cutting slips during
the cutting which twists or jams the segment loose.
Remedy:
Make sure the material is secure before
you make your cut.

CRACKED SEGMENTS
Cause:
The blade segment bond is too hard for
the material.
Remedy:
Use the correct blade with a softer bond.

OVERHEATING
Cause:
Adequate coolant was not provided.
Remedy:
Check water supply for volume, pressure or clogs.
Use dry blades ONLY for step cutting.
Reminder to let blade cool every 10-15 seconds.

CRACKED CORE
Cause:
Excessive cutting pressure, jamming or
twisting the blade in the cut causes the blade’s
core to bend. May lead to cracked gullets.
Remedy:
The saw operator should use steady, even infeed pressure and
be careful not to twist or jam the blade into the cut

BREAKOUT
Cause:
Two fatigue cracks meet from continued
use of blade with a cracked core
Remedy:
Always inspect your blade, especially the gullets before use.
Never use a blade with a cracked core

UNDERCUTTING
Cause:
Highly abrasive material (usually sand)
grinds against the blade in the cut causing the
steel center to wear faster than the diamond segment
Remedy:
Keep the saw blade out of the substrate (sand/class 5)
Use of undercut protectors positioned around the steel center
to change the pattern of constant abrasion

ABRASIVE BLADE INSPECTION
FRAYING
Cause:
When the blade is dropped, run over,
twisted in the cut or if the blade gets wet.
Remedy:
Discard if frayed, cracked or gets wet
ALWAYS USE 3-PLY ABRASIVES

METAL RING MISSING
Cause:
Wrong arbor and forcing the blade
onto the arbor.
Remedy:
Make sure the blade has the correct arbor
and is carefully mounted on saw
IMPORTANT: ALWAYS ENSURE THE METAL RING IS INTACT AND NOT DAMAGED

INCORRECT RPM
Cause:
Wrong abrasive blade for your saw.
Remedy:
Make sure your abrasive blade is 1/8” wide and
rated for 5400 RPM
Always use abrasives 1/8” wide and rated for 5400 RPM. Chop saw abrasives are 3/32” wide & not rated for 5400 RPM

BLADE INSPECTION: INJURY
Employee's Foot Is Lacerated When Struck By Saw Blade
At 9:30 a.m. on December 5, 2017, Employee #1 was cutting concrete
with a Stihl TS700 saw. The blade broke, sending three pieces airborne.
A piece of blade struck the right foot of Employee #1, causing
lacerations.
…blade broke, sending three pieces
airborne. A piece of blade struck the
right foot…

SAW SELECTION: FACTORS AFFECTING SAW CHOICE
1. The Saw
Saw Horsepower and RPM, Condition of the Saw,
Blade Arbor Size
2. Material Being Cut
Hardness and Size of Aggregate, Type of Sand,
Amount of Steel
3. Operator’s Experience
Water Volume, Cutting Depth, Cutting Pressure
4. Blade Quality & Type
Segment Bond Hardness, Diamond Quality,
Diamond Concentration, Segment Width

SAW SELECTION
WHICH SAW IS IN YOUR TRUCK?

SAW INSPECTION
SAW BELT GUARD
Cracked Belt Guard
Replace if damaged

SAW INSPECTION
SAW HANDLE
Warn Handle
Replace if damaged

SAW INSPECTION
SAW HANDSAW FLY WHEEL COVER
Replace if damaged

SAW INSPECTION
SAW BLADE GUARD
Replace if damaged
Cracked Blade Guard
Modified Blade Guard
(rotates past the stop pin
position)
Worn Blade Guard

SAW INSPECTION
WATER ATTACHMENT
Replace if clogged, damaged or missing
Water Delivery System Missing

SAW INSPECTION
SAW BLADE FLANGES
Replace if damaged
Broken Tabs
Build up on Flanges
Sharp/Worn Edges

SAW INSPECTION
SECURING THE ARBOR NUT
Lock the blade in place with the pin &
use the wrench provided with the saw.

SECURING THE BLADE

SAW OPERATION: KICKBACK STORY

SAFETY SAW HIGHLIGHT
STIHL TS440
14” CUTQUIK®
Concrete Saw
- Quickstop® wheel brake technology
- Expanded blade guard adjustability
- Great for pipe cutting, corners, and bottom of walls

HUSQVARNA K770 SMARTGUARD™
14” Cut-Off Concrete Saw
- SmartGuard™ extended blade guard design
emphasizes the correct technique and cutting zone
- Integrated pointer line for precise cuts

HUSQVARNA K1 PACE
14” Battery Concrete Saw
- Features New X-Halt Blade Brake Function
- Gives off Zero-Emissions – great for both indoor
and outdoor cutting situations
- Similar power and speed to K770

NEW SAW SAFETY PPE
HUSQVARNA SMARTGUARD™ PPE
SAFETY HELMETS
- SmartGuard™ protection reduced risk of
lacerations in the chance of a kickback
- Includes: Ear Protection, Visor, & Chin Guard
*No personal protective equipment can offer full protection against injury.

SAW OPERATION
Locked left elbow
Left hand on front handles,
Right hand on the handle EVERY TIME
Thumbs wrapped
around handles
Clear work area
Secure footing
TIPS FOR SUCCESSFUL SAWING

SAW OPERATION
- Weak grip – thumbs should wrap
around the handle
- No Gloves
IMPROPER SAW USAGE
- In direct line with the wheel
- Bending over the saw
- Improper handle use/ 1-handed operation

KICKBACK FOOTAGE

KICKBACK: HOW TO AVOID
TIPS TO HELP AVOID KICKBACK
Make sure the material is properly
supported before cutting.
Contact at the front of the wheel can
cause kickback and should be avoided.
Take precaution when cutting within
the danger zone (upper quadrant)
Use wedges to avoid
pinching and kickback

PIPE CUTTING
For pipe 4” and less in diameter, cut through top to bottom
with the lower quadrant of the blade

PIPE CUTTING
For pipe larger than 4” in diameter, several cuts are needed
AND the correct sequence is critically important

PIPE CUTTING
1
5
2 3
4
6

PERSONAL PROTECTIVE EQUIPMENT
Safety Glasses
Gloves
Face Shield
Hard Hat
Respiratory
Protection
Ear Protection
Fire Retardant Shirt

PERSONAL PROTECTIVE EQUIPMENT
WHY WEAR A FACE SHIELD WHEN CUTTING

DUST CONTROL & SILICOSIS
CONTROLLING DUST USING WATER
EZ PUMP – ZERO PUMP
WATER TANK
SLURRY MAGIC - CONCRETE
SLURRY SOLIDIFIER

DUST CONTROL & SILICOSIS
CONTROLLING DUST USING VACUUMS
ESCHVAC 552 w/ AutoStart
150 CFM 110 V
HUSQVARNA DE120 Battery Vac
265 CFM 120 V

TIPS FOR SUCCESSFUL SAWING
FINAL TIPS FOR SUCCESSFUL SAWING
Read & Understand Instruction Manual
Good Physical Condition & Mental Health
Alert & Aware of Co-Workers & Surroundings
Outdoors in a Well-Ventilated Area (gas saws)
Engage at Full Throttle & Cut at Full Throttle
✅
✅
✅
✅
✅

*DISCLAIMERS
*"The use of power saws involves inherent risks and dangers, and it is crucial that
operators adhere to strict safety guidelines to minimize the potential for accidents or
injuries. This presentation does not replace or supersede the manufacturer's instructions
and operator manual provided by the respective power saw manufacturer."
*"All trademarks are owned by respective manufacturers."

THANK YOU!
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Virtual Esch Saw and Blade Safety Training - 2024.pptx

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