Resin Frankfurt Abrasive
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Resin-bond Diamond Frankfurt Abrasive Blocks (often referred to as "horseshoe" blocks) are specialized consumables used in automatic polishing lines for marble, travertine, and jade. They handle the intermediate, fine, and mirror-finish polishing stages. Following the initial rough grinding (performed by metal Frankfurt blocks) and the transitional grinding (using magnesite horseshoe blocks), these resin blocks determine the stone's final mirror-like gloss and surface smoothness, serving as a core tool for achieving the final finish on marble products.
While primarily used on automatic marble polishing machines, resin-bond Frankfurt blocks are also compatible with floor grinding machines for the restoration and refinishing of granite, marble, terrazzo, and concrete surfaces.
To achieve superior grinding power, we embed metal segments into the resin matrix, creating composite-bond Frankfurt blocks. Additionally, to meet diverse customer requirements and accommodate various stone types, we have developed composite-bond Frankfurt blocks that utilize a blend of Bakelite and composite resins. For the sake of simplicity, we collectively refer to these products as either "resin-bond Frankfurt blocks" or "composite-bond abrasive blocks."
Matching the Polishing Machine Base Size
Critical Requirement: Incorrect sizing prevents installation
1. Standard Universal
In the field, we also commonly refer to standard Frankfurt Abrasive Blocks(105mm) as T3 abrasive.
Dimensions: 106×95×40mm; compatible with 90% of global automatic marble polishing lines (e.g., Keda, Breton, and Simec 8/12/16/20-head machines). A mainstream stock item designed for direct replacement of OEM consumables.
2. Non-standard/Special Sizes
T80 Small Horseshoe Type: For 8-head simple low-speed polishers and equipment used in small Southeast Asian workshops;
Customized Extended/Thickened Bases: For European heavy-duty high-speed production lines and specially customized machine heads.
3. Abrasive Layer Thickness Options
- 40mm Standard Layer: Cost-effective universal choice; ideal for small-to-medium factories and intermittent production;
- 45/50mm Thickened Wear-Resistant Layer: For 24-hour continuous mass production and hard marble or terrazzo; offers 18%–25% longer service life;
- 35mm Thin Abrasive Layer: For low-cost sample testing and small-batch processing of thin slabs.
Applicable Stone Types:
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Various Natural Marbles: Mainstream architectural stones such as beige marble, grey-white marble, Nero Marquina (Black with White Veins), dark-veined marble, and medium-hardness marble.
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Porous, Soft Stones: Travertine and limestone; due to their loose texture, flexible resin polishing is required to prevent edge chipping and scratching.
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High-End Translucent Luxury Stones: Onyx and translucent agate; requires a specialized soft resin formula and is the only type compatible with diamond abrasives for precision finishing.
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Composite Engineered Stones: Engineered marble, cement-based terrazzo, and epoxy-repaired stone; capable of grinding repair layers flat and achieving a high-gloss finish.
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Low-Hardness Stones: Thin-slab marble with low quartz content; not suitable for high-hardness granite or Black Galaxy granite.
Use of stone materials is prohibited.
- Hard stone materials such as granite, Black Galaxy, and quartzite are not permitted; resin blocks may not be substituted for metal-bonded coarse grinding tools.
Suitable Stone Slabs
- Standard 20mm large marble slabs, long-format engineering slabs, and exterior dry-hanging stone panels
- Stone countertops, stair treads, and vanity tops (processing from rough blanks to finished products)
- Slabs requiring epoxy repair or void filling
- Thin decorative marble slabs and interior decorative stone facing
Unsuitable Slabs
- Thick raw blocks, rough blanks with significant surface irregularities, and curved or complex-shaped stones requiring initial rough processing.
How to Choose Resin-Bonded Diamond Frankfurt
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Selecting Resin Hardness/Flexibility Based on Stone Type
A key factor determining polishing results
Resins fall into two main categories—hard general-purpose resins and soft, elastic resins—distinguished strictly by stone hardness and brittleness:
Hard Resin Formula (General-Purpose)
- Suitable for: Standard beige, grey-white, and black marbles; terrazzo; and epoxy-repaired slabs.
- Advantages: High wear resistance, longer lifespan per pad, and stable cutting performance; ideal for large-scale slab processing.
- Drawbacks: Low flexibility; prone to leaving slight scratches when processing jade-like stones.
Soft, Elastic, Scratch-Resistant Resin (Specialized for Luxury Stone)
- Suitable for: Onyx, travertine, limestone, and porous, fragile, or translucent luxury stones.
- Advantages: High matrix cushioning; prevents deep scratches and edge chipping; produces a uniform mirror-like finish.
- Drawbacks: Lower wear resistance compared to hard resins; lifespan reduced by 10%–18%.
High-Wear-Resistance, Modified, Anti-Aging Resin
- Suitable for: 24-hour high-speed continuous production lines, conditions with insufficient cooling water, and hard marbles. Formulated with heat-resistant fillers to prevent powdering at high temperatures; lifespan increased by 15%–20%.
Match the grit size to the specific polishing stage
use sequential progression; skipping grit sizes is strictly prohibited
Resin Frankfurt abrasives are designed solely for medium polishing, fine polishing, and mirror finishing; they do not include coarse grinding grits. The complete grit range includes #120–#3000 and Buff high-gloss blocks.
1) Medium Polishing Grits: #120 / #180 / #240 / #400 / #600
- Purpose: Follows the transition grinding stage (Magnesite abrasives); refines coarse grinding marks and creates a uniform surface texture; features high stock removal rates and faster wear.
- Applications: Surfaces with visible residual marks; preparatory stage for fine finishing of thick slabs.
2) Fine Polishing & Mirror Finish Grits: #800 / #1500 / #3000
- Purpose: Establishes initial gloss, enhances stone luster, and removes fine scratches; features low stock removal rates and longer service life.
3) Buff Polishing/Finishing Block
- Purpose: Ultra-bright mirror finishing (gloss levels of 90–105°); designed for high-end countertops and decorative stone; higher unit price compared to standard grits.
Standard Complete Grit Sequence for Marble
Reference for purchasing sets
- Metal Bond Diamond Frankfurt #36–#120 (Coarse Grinding) →
- Magnesite Frankfurt Abrasive #240–#400 (Transition) →
- Resin Diamond Frankfurt #600–#1500–#3000 →
- Buff Frankurt Abrasive
FAQ
Q: What is the service life of resin bond diamond frankfurt?
A: Tested under standard 20mm marble slab with full circulating water cooling: Medium grit #120–#600: 18,000–24,000 ㎡ per block Fine & mirror grit #800–#3000/Buff: 22,000–30,000 ㎡ per block Our upgraded anti-aging resin formula extends lifespan by 15%–20%. Service life will drop obviously without enough cooling water or polishing hard marble with thick epoxy layers.
Q: What’s the difference between resin, metal and magnesite frankfurt blocks?
A: Metal bond frankfurt owns super strong cutting power and longest lifespan for rough slab leveling; resin bond frankfurt features flexible elastic matrix to produce scratch-free high-gloss finish for fine polishing, ideal for luxury onyx; magnesite frankfurt is low-cost economical medium grinding abrasive for small marble factories. They must be matched together to complete a full marble polishing sequence.
Q: Can resin bond frankfurt polish luxury onyx stone?
A: Yes, we supply customized soft elastic resin formula frankfurt exclusively for fragile onyx, travertine and limestone. It polishes gently without deep scratches or edge breakage, the perfect choice for luxury stone mirror finishing.
Q: Does T105 resin frankfurt fit all Keda automatic marble polishing machines?
A: Absolutely. Our universal T3/T105 horseshoe base with standard mounting holes matches all Keda 8/12/16/20-head marble continuous polishing lines directly, no machine modification needed. Custom non-standard sizes are available for bulk orders.
Q: What grit sequence uses resin bond frankfurt on marble line?
A: Standard full polishing flow: Metal bond frankfurt #36/#60/#120 → Magnesite frankfurt #240/#400 → Resin bond frankfurt #800/#1500/#3000/Buff for final mirror gloss finishing. Do not skip grit sizes to avoid residual scratches on slab surface.
Q: Is soft resin frankfurt for onyx more expensive than regular marble resin frankfurt?
A: Yes. The flexible anti-scratch elastic resin formula for fragile onyx and travertine adds special soft fillers, so it costs $3–$6 higher per piece than standard hard resin frankfurt for ordinary marble.
Q: Is thicker segment resin frankfurt worth buying for mass production lines?
A: Yes. 45–50mm thick wear layer extends service life by 18%–25%, reducing frequent downtime for abrasive replacement for factories running 24 hours a day.
Q: Can resin diamond fickert replace metal fickert for rough slab leveling?
A: No. Resin bond fickert has weak cutting power, it cannot remove deep saw scratches and large unevenness. Metal bond fickert must be used for front rough calibration first.
As one of the most experienced resin frankfurt abrasive enterprises in China, we are able to meet the needs of the majority of our customers. Please feel free to wholesale advanced resin frankfurt abrasive made in China here from our factory. For price consultation, contact us.
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