Trapezoid Bolt-On Double Bar Diamond Grinding Shoes for Concrete Floors
The ALSKAR DIAMOND Trapezoid Bolt-On Double Bar Diamond Grinding Shoes are designed for professional concrete floor grinding, surface leveling, and substrate preparation.
Featuring two rectangular metal-bonded diamond grinding segments mounted on a multi-hole trapezoidal steel plate, these grinding shoes provide distributed abrasive contact for effective material removal and consistent concrete surface preparation.
Available in 18/20, 30/40, and 60/80 diamond grits, with Soft, Medium, and Hard bond selections, the series supports multiple grinding stages—from aggressive surface leveling to finer metal-bond surface refinement.
Key Features:
- Double Bar Design: Two rectangular diamond grinding segments for stable, consistent grinding contact.
- Trapezoid Bolt-On Mounting: Multi-hole steel mounting plate for compatible bolt-on floor grinder holders.
- Three Diamond Grits: 18/20 for coarse grinding, 30/40 for general-purpose grinding, and 60/80 for finer surface preparation.
- Three Bond Options: Soft for hard concrete, Medium for medium-hard concrete, and Hard for soft or abrasive concrete.
- Metal-Bonded Diamond Construction: Designed for professional concrete floor grinding and surface preparation.
- Professional Applications: Concrete leveling, surface restoration, high-spot removal, and preparation before polishing or coatings.
- Machine Fitment Reference: Comparable bolt-on tooling is offered for selected Diamatic, CPS, Innovatech/Bartell, and Klindex floor grinders.
Diamond Grit: 18/20 | 30/40 | 60/80
Bond Hardness: Soft | Medium | Hard
Mounting Type: Trapezoid Bolt-On
Segment Configuration: Double Bar — 2 Diamond Segments
Important: Machine compatibility depends on the specific grinder model, tool holder, mounting-hole spacing, and plate dimensions. Verify fitment before ordering.
Trapezoid Bolt-On Double Bar Diamond Grinding Shoes – Professional Concrete Floor Grinding
The ALSKAR DIAMOND Trapezoid Bolt-On Double Bar Diamond Grinding Shoes are developed for professional concrete grinding contractors, flooring specialists, and surface preparation professionals.
Each grinding shoe features two rectangular metal-bonded diamond grinding segments mounted on a durable trapezoidal steel base plate.
The double bar configuration distributes grinding contact across two diamond segments, helping maintain consistent abrasive engagement during concrete floor grinding, surface leveling, and substrate preparation.
Designed for compatible bolt-on floor grinding systems, these diamond grinding shoes are suitable for removing concrete surface irregularities, reducing high spots, and preparing floors for subsequent finishing operations.
Three Diamond Grit Options
- 18/20 Grit: Coarse grinding and aggressive surface preparation.
- 30/40 Grit: General-purpose concrete grinding and surface leveling.
- 60/80 Grit: Finer metal-bond grinding and surface refinement.
Three Bond Hardness Options
- Soft Bond: Recommended for hard concrete.
- Medium Bond: Recommended for medium-hard concrete.
- Hard Bond: Recommended for soft or abrasive concrete.
Comparable trapezoid bolt-on grinding tools are offered in the market for selected floor grinders from Diamatic, CPS, Innovatech/Bartell, and Klindex. Compatibility with this ALSKAR mounting plate must be verified for the specific machine and tool holder.
The ALSKAR Double Bar series provides a practical grinding solution for contractors seeking versatile grit and bond selections with a familiar trapezoid bolt-on configuration.
Trapezoid Bolt-On Double Bar Diamond Grinding Shoes – Professional Concrete Floor Grinding
The ALSKAR DIAMOND Trapezoid Bolt-On Double Bar Diamond Grinding Shoes are developed for professional concrete grinding contractors, flooring specialists, and surface preparation professionals.
Each grinding shoe features two rectangular metal-bonded diamond grinding segments mounted on a durable trapezoidal steel base plate.
The double bar configuration distributes grinding contact across two diamond segments, helping maintain consistent abrasive engagement during concrete floor grinding, surface leveling, and substrate preparation.
Designed for compatible bolt-on floor grinding systems, these diamond grinding shoes are suitable for removing concrete surface irregularities, reducing high spots, and preparing floors for subsequent finishing operations.
Three Diamond Grit Options
- 18/20 Grit: Coarse grinding and aggressive surface preparation.
- 30/40 Grit: General-purpose concrete grinding and surface leveling.
- 60/80 Grit: Finer metal-bond grinding and surface refinement.
Three Bond Hardness Options
- Soft Bond: Recommended for hard concrete.
- Medium Bond: Recommended for medium-hard concrete.
- Hard Bond: Recommended for soft or abrasive concrete.
Comparable trapezoid bolt-on grinding tools are offered in the market for selected floor grinders from Diamatic, CPS, Innovatech/Bartell, and Klindex. Compatibility with this ALSKAR mounting plate must be verified for the specific machine and tool holder.
The ALSKAR Double Bar series provides a practical grinding solution for contractors seeking versatile grit and bond selections with a familiar trapezoid bolt-on configuration.
Double Bar Diamond Segments for Stable and Consistent Grinding
The ALSKAR Trapezoid Bolt-On Double Bar Grinding Shoe incorporates two straight rectangular metal-bonded diamond segments mounted on a steel backing plate.
Dual-Segment Grinding Contact
Two diamond grinding bars distribute abrasive contact across the working surface.
Compared with a similar single-bar configuration, the double bar arrangement generally provides a larger combined contact area when segment dimensions and operating conditions are comparable.
This makes Double Bar tooling a practical option for routine concrete floor grinding and surface preparation.
Effective Concrete Material Removal
The metal-bonded diamond segments engage cured concrete and other compatible cement-based surfaces.
Material removal performance depends on diamond grit, bond hardness, grinder weight, machine speed, and substrate condition.
Open Grinding Configuration
The space between the two grinding bars provides room for grinding debris to move away from the active contact area.
Progressive Grinding Stages
The same Double Bar segment design is offered with multiple grit selections, allowing contractors to progress through coarse, general, and finer metal-bond grinding stages.
Durable Trapezoid Steel Base
The trapezoidal backing plate provides support for the diamond grinding elements and includes multiple mounting holes.
The actual mounting-hole pattern and plate dimensions must match the grinder’s approved tool holder.
ALSKAR Double Bar Diamond Grinding Shoes are intended to offer consistent abrasive contact, practical grit selection, and versatile concrete floor grinding performance.
Choose the Right Diamond Grit for Concrete Floor Grinding
The ALSKAR Double Bar Diamond Grinding Shoes are available in three diamond grit ranges to support different stages of concrete surface preparation.
18/20 Grit – Coarse Grinding & Aggressive Surface Preparation
18/20 grit is recommended for the initial grinding stage when the surface requires relatively aggressive material removal.
Typical Applications:
- Concrete high-spot removal
- Coarse concrete surface leveling
- Initial grinding of uneven floors
- Concrete repair and restoration
- Preparing rough surfaces for subsequent grinding
30/40 Grit – General-Purpose Concrete Grinding
30/40 grit provides a practical option for general concrete grinding, leveling, and reduction of scratches left by coarser metal-bond diamond tools.
Typical Applications:
- General concrete floor grinding
- Routine concrete surface preparation
- Medium-stage concrete leveling
- Concrete restoration
- Progressive grinding after coarse preparation
60/80 Grit – Finer Metal-Bond Surface Refinement
60/80 grit is intended for additional surface refinement following coarse or general grinding.
Typical Applications:
- Refining scratches from previous grinding stages
- Smoothing cured concrete surfaces
- Intermediate metal-bond grinding
- Preparing floors for hybrid or resin-bond polishing stages
- Progressive concrete surface preparation
Recommended Grinding Progression
A common progression for compatible concrete surfaces is:
18/20 Grit → 30/40 Grit → 60/80 Grit
Not every project requires all three steps. The correct starting grit and progression depend on the existing concrete condition, required surface profile, and final finishing system.
Important: Diamond grit should be selected together with bond hardness. Choosing the correct grit alone does not guarantee appropriate grinding performance.
Diamond Bond Selection – Soft, Medium & Hard
Selecting the correct bond hardness is essential for effective concrete grinding and appropriate diamond segment wear.
In metal-bond diamond grinding tools, the bond matrix retains the diamond abrasive particles and gradually wears to expose fresh cutting edges.
As a general rule, hard concrete requires a softer bond, while soft or highly abrasive concrete requires a harder bond.
Soft Bond – For Hard Concrete
Soft Bond tooling is designed to expose fresh diamond particles more readily when grinding hard or dense concrete.
Recommended Applications:
- Hard cured concrete
- Dense concrete floors
- Concrete that causes harder bond tooling to glaze
- Grinding operations requiring more active diamond exposure
Medium Bond – For Medium-Hard Concrete
Medium Bond is a versatile selection for concrete with moderate hardness and abrasiveness.
Recommended Applications:
- General concrete floor grinding
- Medium-hard concrete
- Commercial and industrial concrete surfaces
- Routine floor restoration
Hard Bond – For Soft or Abrasive Concrete
Hard Bond tooling is designed to resist rapid matrix wear on softer or highly abrasive concrete.
Recommended Applications:
- Soft concrete
- Abrasive concrete floors
- Surfaces that cause rapid diamond segment wear
- Applications requiring greater bond wear resistance
Bond Selection Summary
| Concrete Type | Recommended Bond |
|---|---|
| Hard Concrete | Soft |
| Medium-Hard Concrete | Medium |
| Soft / Abrasive Concrete | Hard |
Grinding Troubleshooting
If the tool glazes or stops cutting effectively: A softer bond may help expose fresh diamond abrasive.
If the diamond segments wear excessively fast: A harder bond may help reduce premature matrix wear.
If the grinding marks are too coarse: Consider progressing to a finer diamond grit after the initial material removal stage.
Actual results depend on substrate hardness, aggregate composition, grinder weight, machine speed, and operating conditions.
Applications & Recommended Materials
The ALSKAR Trapezoid Bolt-On Double Bar Diamond Grinding Shoes are designed for professional concrete floor grinding and surface preparation.
Concrete Floor Leveling
Suitable for reducing uneven areas, grinding high spots, and preparing cured concrete floors for additional treatment.
General Concrete Grinding
The double bar metal-bonded diamond design is intended for routine grinding of commercial, industrial, and residential concrete floors.
Concrete Surface Restoration
Useful for preparing worn, irregular, or repaired concrete surfaces before additional finishing operations.
Progressive Metal-Bond Grinding
The three available diamond grits—18/20, 30/40, and 60/80—support different stages of grinding and surface refinement.
Preparation Before Concrete Polishing
Suitable for early and intermediate grinding steps before transitioning to appropriate hybrid, ceramic, or resin-bond polishing systems.
Preparation Before Coatings
Can be used for preparing concrete substrates before suitable coating or overlay applications.
Always confirm that the resulting concrete surface profile meets the coating manufacturer’s requirements.
Recommended Materials
- Cured Concrete
- Commercial Concrete Floors
- Industrial Concrete Floors
- Residential Concrete Slabs
- Compatible Cement-Based Surfaces
- Suitable Cementitious Overlays
Typical Applications
- Concrete Floor Grinding
- Surface Leveling
- Concrete High-Spot Removal
- Concrete Restoration
- General Surface Preparation
- Progressive Metal-Bond Grinding
- Preparation Before Polishing
- Preparation Before Coatings
Important: These diamond grinding shoes are intended primarily for concrete and cement-based surface grinding. Thick epoxy, rubbery coatings, soft adhesives, and heavy mastic generally require specialized PCD coating removal tooling.
A Double Bar metal-bond grinding shoe is not a final concrete polishing tool.
Trapezoid Bolt-On Mounting & Floor Grinder Compatibility
The ALSKAR DIAMOND Trapezoid Bolt-On Double Bar Grinding Shoes feature a multi-hole trapezoidal steel mounting plate designed for compatible bolt-on floor grinding systems.
The mounting style is commonly used across selected professional floor grinding equipment.
Common Grinder Brands & Reference Models
Comparable trapezoid bolt-on tooling is offered in the market for selected machines from the following manufacturers:
| Grinder Manufacturer | Reference Models |
|---|---|
| Diamatic | BGS-435, BGS-555, BGS-735, BGS-780 |
| CPS (Concrete Polishing Solutions) | G170, G210, G250, G290, G320D |
| Innovatech / Bartell | Predator 1800, Predator 2400, Predator 32D, Predator 32NDX |
| Klindex | Selected Expander Series Models |
Compatibility Notice: These are industry references for comparable bolt-on diamond grinding shoes. Fitment with this specific ALSKAR mounting plate has not yet been individually verified.
A matching manufacturer or machine model does not automatically guarantee compatibility.
How to Verify Mounting Compatibility
Before ordering, confirm the following:
- Grinder manufacturer and model
- Grinding tool holder or grinding plate type
- Trapezoid mounting plate dimensions
- Mounting-hole spacing and hole diameter
- Mounting bolts and fastening requirements
- Any required adapter plates
Why Mounting Compatibility Matters
Different floor grinder manufacturers may use different bolt patterns, mounting plates, holder profiles, or proprietary tool attachment systems.
Even when two grinding shoes have similar trapezoidal shapes, their mounting arrangements may not be interchangeable.
Need Help Selecting the Right Grinding Shoe?
If you are unsure whether this ALSKAR grinding shoe fits your machine, please contact us with:
- Your floor grinder brand and model number
- A clear photo of the existing tool holder
- Mounting dimensions, if available
We can review the supplied information to help identify the appropriate mounting configuration before ordering.
Professional Operating Guidelines
- Install grinding shoes using approved mounting hardware.
- Verify that all grinding tools are securely attached.
- Follow the floor grinder manufacturer’s operating instructions.
- Use suitable dust extraction when dry grinding concrete.
- Use wet grinding only when the specific tooling and machine are approved for wet operation.
- Wear appropriate personal protective equipment.
- Follow applicable silica dust-control requirements.
For wholesale orders, mounting compatibility should be verified before bulk production or shipment.
Grit & Bond Selection Guide
| Diamond Grit | Soft Bond | Medium Bond | Hard Bond |
|---|---|---|---|
| 18/20 | Hard Concrete | Medium Concrete, coarse grinding | Soft Concrete, coarse grinding |
| 30/40 | Hard Concrete | Medium Concrete, general grinding | Soft Concrete, general grinding |
| 60/80 | Hard Concrete | Medium Concrete, finer grinding | Soft Concrete, finer grinding |
Floor Grinder Compatibility Guide
The following manufacturers and models
are market references for comparable
trapezoid bolt-on diamond grinding tooling.
| Grinder Brand | Reference Models | Fitment Status |
|---|---|---|
| Diamatic | BGS-435 / 555 / 735 / 780 | Verify Holder |
| CPS | G170 / G210 / G250 / G290 / G320D | Verify Holder |
| Innovatech / Bartell | Predator 1800 / 2400 / 32D / 32NDX | Verify Holder |
| Klindex | Selected Expander Series | Verify Holder |
Important:
Grinder brand and model references
do not guarantee compatibility.
Always verify mounting plate dimensions,
hole spacing, fastening hardware,
and tool holder design before ordering.
Need Help Finding the Right Tooling?
Send ALSKAR DIAMOND your grinder model
and a clear photo of the tool holder
for a mounting compatibility review.
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Frequently Asked Questions
1. What are double bar diamond grinding shoes?
two rectangular diamond grinding segments
mounted on a steel backing plate.They are commonly used for concrete floor
grinding, leveling and surface preparation.
2. What is a trapezoid bolt-on grinding shoe?
a trapezoidal metal base plate with
mounting holes for mechanical attachment.The plate must match the floor grinder’s
approved holder, hole spacing,
and fastening arrangement.
3. What grit options are available?
Shoe series includes 18/20, 30/40,
and 60/80 diamond grit selections.Choose the grit according to the
grinding stage and substrate condition.
Actual purchasable combinations are
shown in the variation selector.
4. When should I use 18/20 grit?
commonly used for initial concrete
grinding, surface leveling,
high-spot removal and more aggressive
material removal.
5. What is 30/40 grit used for?
general-purpose concrete floor grinding,
surface leveling and preparation.It can also help reduce grinding marks
left by coarser metal-bond tooling.
6. When should I choose 60/80 grit?
diamond selection used for intermediate
surface refinement and reducing
scratches left by previous grinding
stages.It may be used before transitioning
to suitable hybrid or resin-bond
polishing tools.
7. How do I choose the correct diamond bond?
requires a softer diamond bond,
while soft or abrasive concrete
usually requires a harder bond.Soft Bond: Hard concrete.Medium Bond: Medium-hard concrete.Hard Bond: Soft or abrasive concrete.
Machine weight, concrete composition,
and operating conditions also affect
bond selection.
8. What is the difference between single bar and double bar grinding shoes?
diamond grinding segment, while
double bar grinding shoes have two.With comparable segment dimensions,
a single bar generally produces
higher localized contact pressure.Double bar tooling provides more
distributed grinding contact and
is commonly selected for general
concrete floor grinding.
9. Which floor grinder brands commonly use bolt-on grinding shoes?
tooling is offered in the market
for selected Diamatic, CPS,
Innovatech/Bartell, Klindex and
other floor grinding machines.Fitment with this ALSKAR mounting
plate must be checked for the
specific grinder and tool holder.
10. Will these grinding shoes fit my Diamatic or CPS floor grinder?
machine model, tool holder,
mounting-hole spacing and
fastening arrangement.A matching machine brand alone
does not guarantee fitment.Please verify the mounting
configuration before ordering.
11. How can I confirm machine compatibility?
machine model, tool holder,
mounting plate dimensions
and mounting-hole spacing.If you are unsure, send
ALSKAR DIAMOND your grinder model
and a clear photo of the
existing tool holder.
12. Can these grinding shoes remove epoxy coatings?
grinding shoes are primarily
designed for concrete grinding.Some suitable hard residues may
be removed under appropriate
conditions.For thick epoxy, soft adhesives,
mastic and rubbery coatings,
dedicated PCD removal tools
are generally more suitable.
13. Are these grinding shoes suitable for concrete polishing?
shoes are typically used for early
and intermediate concrete grinding.They are not final polishing tools.Additional hybrid, ceramic
or resin-bond abrasive stages
may be required for a polished finish.
14. Can these grinding shoes be used wet or dry?
depends on the specific grinding
shoe configuration and
manufacturer specifications.For dry concrete grinding,
use suitable dust extraction
and respiratory protection.Wet grinding requires both
the tooling and machine to
be approved for wet operation.
15. What safety precautions should I follow?
tool holder and fastening hardware.Secure all grinding shoes
according to the equipment
manufacturer’s instructions.Use appropriate dust-control
equipment and personal protection.
Stop operation if abnormal
vibration, damage or
unusual tool wear occurs.
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| Diamond Grit | 18/20, 30/40, 60/80 |
|---|---|
| Bond Hardness | Soft, Medium, Hard |
| Mounting System | Trapezoid Bolt-On |
| Segment Design | Double Bar |
| Segment Count | 2 |
| Abrasive Type | Metal-Bonded Diamond |
| Base Plate | Trapezoidal Steel Plate |
| Application | Concrete Grinding / Leveling / Surface Preparation |
| Equipment | Walk-Behind Floor Grinder |
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