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double roller rock crusher

China Brick Slag Clinker Feldspar Double Roller Crusher ...

Roll Crushers, What Are These Machines ... Coal plants will use roll crushers, either single roll or double roll, as primary crushers, reducing the ROM coal. Usually, these crushers will have teeth or raised forms on the face of the roll. (Roll crushers used for …

Roller Crusher, Double Toothed Roll Crusher, Smooth Roll ...

Roller Crusher Stone Cone Single Double Small with High Capacity. We manufacture Roller Crusher Stone Cone Single Double Small with High Capacity. We devote ourselves to mining machinery many years, and our machines have been exported to South Asia, South America, Africa, Middle East and some other area.

roller crusher,roller crusher price,roller crusher for ...

Double Roll Crusher is widely used for secondary and fine crushing in the industry of mining, building materials, chemical industry, metallurgy and so on. It can crush materials in middle hardness such as rocks, ore, coke, lump coal, slag,now our factory is the largest manufacturer and supplier of gravity mining equipment in China.shaking table,spiral chute,spiral chute manufacturer,shaking ...

Double Roll & Teethed Roll Crusher

China Top Marble Three Double Roll Mill Crusher Making Machine Price ... New Design Mini Mining Double Roller crusher Cement Rock Salt Roll Crusher Price For Sale ..... Mini hot sale double roll crusher designed by hongji gold supplier. Chat Online

double roll crusher ore crushing machine manufacturers

The applied material for teeth roller crusher are diverse. Double toothed roller crusher can crush limestone and rocks with compressive strength more than 200MPa. However, the most suitable materials for teeth roll crusher are clammy ones with water content between 25%-30% or hard material with mud inside. Since the teeth roll crusher has ...

3-Stage Rock Crusher: Online

double roller rock crusher for russia market; apa yang dimaksud crushing plant; energy saving jaw crusher for sale capacity 80 220 t h; galvanic interaction significantly; jaw crusher for lime dolomite; flat iron machine laundry equipment ypaiii 3000; what do you mean by 100 tpd; crusher plant conveyor layout; high fine cement milltin ore crusher

double roller rock crusher 1 - restoreservice.in

DOUBLE ROLLER CRUSHER from Tangshan Tianhe Environmental Protection Technology Co., Ltd.. Search High Quality DOUBLE ROLLER CRUSHER Manufacturing and …

Roll Crusher | Lump Breaker | Williams Crusher

Laboratory Roll Crusher. Lab use double roller small roll crusher crushing metallic ore and coal for analysis. US $860 8800 Tags: Lab Crusher Lab Double Roller Crusher Lab Crusher Machine Laboratory Sample Crusher Apparatus Roll Crusher For Mining. Get Price Rock Crusher Machine Price Wholesale, Machine Prices Suppliers

Small Roller Crusher Manufacturers - sankay-crusher.com

Sri lanka tooth roll crusher, 2018 stone crusher machine, gold crushing machine Henan Manufacturer Sell Rock Stone Tooth Double Roller Roll Crusher . Ore grinding Application and Roller Crusher Type lab double toothed roll crusher. Get Price Mini Crusher Machine, Mini Crusher Machine Suppliers .

gold mining machine double roller rock crusher

Double Roll Crusher is widely used for secondary and fine crushing in the industry of mining, building materials, chemical industry, metallurgy and so on. It can crush materials in middle hardness such as rocks, ore, coke, lump coal, slag,now our factory is the largest manufacturer and supplier of gravity mining equipment in China.shaking table,spiral chute,spiral chute manufacturer,shaking ...

2015 hot sale double roller rock crusher - 2PG - TARZAN ...

Rock Crusher, Rock Crusher Machine, Stone Prodution Line manufacturer / supplier in China, offering Brick Slag Clinker Feldspar Double Roller Crusher, Low Noise Rotary River Sand Trommel Vibrating Screen, High Temperature Fertilizer Rotary Drum Cooler and so on.

Roll Crusher - Metallurgist & Mineral Processing Engineer

Find great deals on eBay for roll crusher. Shop with confidence. Skip to main content. eBay Logo: ... rock crusher jaw crusher cone crusher. Include description. Categories. Selected category All. ... Allen Sherman Hoff Double Roll Crusher / Clinker Grinder 24" x 24" Refurbished. $3,499.99. or Best Offer.

roll crusher | eBay

Jul 05, 2018· Keene's RC46DR Double Roller Rock Crusher - Duration: 32:52. Inc. 1,103 views. 32:52. Loading more suggestions... Show …

roll crusher | eBay

Crushing rolls might, logically, include roll crushers of the sledging type, the name, by popular usage, is restricted to the double-roll machine (with either smooth or corrugated shells) which crushes entirely by pressure between the surfaces of the roll faces. The sledging type of either single or double-roll arrangement is usually differentiated by such titles as "roll crusher" or ...

Small Roller Crusher Manufacturers - sankay-crusher.com

Roller Crusher Roller Crusher is widely used for fine or superfine crushing in the industries of mining, construction materials, metallurgy, chemical industries and so on. It can crush all kinds of materials under middle hardness, such as ore, rock, coke, coal, clinker, ceramic raw materials, slag, refractory materials, chemical materials and so on.

Rock Crushers

Mar 03, 2016· Crusher Bearings: Knowing the basics leads to better care ... High shock loads and severe contamination make rock and aggregate crushers among the toughest applications for precision components—particularly roller bearings. ... In hammer mills and horizontal crushers, spherical roller bearings in solid or split pillow block housings generally ...

grinding machine mining machine double roller crusher

Roller Crusher Stone Cone Single Double Small with High Capacity. We manufacture Roller Crusher Stone Cone Single Double Small with High Capacity. We devote ourselves to mining machinery many years, and our machines have been exported to South Asia, South America, Africa, Middle East and some other area.

Double Roll Crusher, 13mm Particle Size - Gilson Co.

High Capacity Rock Crusher Double Roller Crusher, Find Complete Details about High Capacity Rock Crusher Double Roller Crusher,Double Roller Crusher Metal Recycling Machines Small Stone Cutting Machine,Stones Crusher Double Roller Crusher Manufacturer,Mobile Crushing Plant Stone Crushing Machine Pisolite Roller Crusher from Crusher Supplier or Manufacturer-Zhengzhou General Mining …

Crusher Bearings: Knowing the basics leads to better care

Jackshafts for control of roller speed are standard on double roll crushers, optional on larger Single Roll Crushers. Protective Spring Releases. Heavy-duty compression springs permit movement of floating roll to pass tramp metal and other uncrushables, avoiding overload and damage. Smaller Single Roll Crushers are equipped with a shear pin ...

gold mining machine double roller rock crusher

Double Roller Crusher, Rock Crusher Used, Spring Cone Crusher manufacturer / supplier in China, offering High Production Double Roller Crusher, Low Price Exporter Gypsum Powder Production Line, High Efficiency Pulverized Coal Crusher Price and so on.

Double Roller Crusher - Shandong Jiuchang Heavy Industry ...

Double roller crusher's the materials by relying on the two round rollers rotating at the opposite direction, and four-roll crusher crushes the materials by relying on the two pairs of round rollers rotating at the opposite direction.

Double-roller crusher - Knowledge - Shenyang Northern ...

Our products feature customized systems for high-volume reduction. Browse our complete line of heavy-duty size reduction products, including shredders, crushers, grinders, pulverizers and more below to discover how Williams Crusher can bring efficiency and quality to your industry.

Size Reduction Equipment | Pulverizers & Crushers ...

.ywords$ double roller rock crusher . Our Services. Service . 1) Pre-sale service:Freely provide project designing, process designing, select suitable equipment for you. 2) Order execution service: Provide equipment layout draw, foundation draw and detail equipment manauls.Timely report you the manufacturing schedule and related photos for keep monitoring.

DOUBLE ROLLER CRUSHER - techheir.en.alibaba.com

China Top Marble Three Double Roll Mill Crusher Making Machine Price ... New Design Mini Mining Double Roller crusher Cement Rock Salt Roll Crusher Price For Sale ..... Mini hot sale double roll crusher designed by hongji gold supplier. Chat Online

double roll crusher - miningshakingtable.com

double roller rock crusher for russia market; apa yang dimaksud crushing plant; energy saving jaw crusher for sale capacity 80 220 t h; galvanic interaction significantly; jaw crusher for lime dolomite; flat iron machine laundry equipment ypaiii 3000; what do you mean by 100 tpd; crusher plant conveyor layout; high fine cement milltin ore crusher

Double roller crusher,rock roller crusher,roll crusher ...

Roll Crushers, What Are These Machines ... Coal plants will use roll crushers, either single roll or double roll, as primary crushers, reducing the ROM coal. Usually, these crushers will have teeth or raised forms on the face of the roll. (Roll crushers used for …

China High Production Double Roller Crusher - China Double ...

Double-roller crusher Apr 15, 2019. Double-roller crusher are used f or the mineral processing, chemical, cement, refractories, abrasive, building materials and other industrial department in the crushing of various high and medium hardness of the ore and rock, especially in the building materials industry to produc e of melon and mung bean s and and other products.

Shuguang High Buying Rate And Advanced Double Roll Rock ...

New and Used Roll Crushers for Sale Savona Equipment is a roll crusher supplier worldwide.We can supply new and used belt-driven roll crushers. There are in four designs of roll crushers: single roll crushers, double roll crushers, triple roll crushers, and quad roll crushers.Roll Crushers are built to handle primary, secondary and tertiary stage crushing of friable materials such as coal ...

High Capacity Rock Crusher Double Roller Crusher - Buy ...

China Double Roller Crusher catalog of Stone Mining Equipment Crushing Machine Supplier From China Roller Crusher, Double Roller Crusher for Crushing Gypsum with High Efficiency provided by China manufacturer - Shandong Jiuchang Heavy Industry Technology Co., Ltd., page1.

double roller rock crusher 1 - restoreservice.in

Roll Crusher for sale & rental | Rock & Dirt. Search from 1000's of listings for new & used Roll Crushers for sale or rental updated daily from 100's of dealers & private sellers.

Dual roll crushers, how they function - Mine Engineer.Com

double roll roller crusher, rock crushing.source from a double roller double teethed limestone crusher at low shuguang high buying rate and advanced double roll rock. raymond grinding mill manufacturers in. mobile impact crusher stable, advanced mobile vibrating screen is equip c6x series jaw crusher. c6x series jaw crusher double wedge ...

A Factory Double Roller Rock Crusher With High Quality

3-Stage Rock Crusher RC46DR. $10,650.00. ... The material then falls down into the first roller mill and is crushed down from 30 to 80 mesh. The material then drops into a second roller mill which reduces matter down to 80 to 150 mesh. With the upgraded double roller mill option, you can do it …

New & Used Roll Crushers For Sale & Rental - Rock & Dirt

Double roller crusher can be used for intermediate and fine crushing such hard and medium hard ore and rock in mineral separation,chemical industry, cement, corhart, abradant materials, building materials and other industrial department, especially for producing rice-like and bean-like stone. The roll crusher is of simple structure, reliable operation and low cost.

New & Used Roll Crushers for Sale | Rock Crushing ...

Find great deals on eBay for roll crusher. Shop with confidence. Skip to main content. eBay Logo: ... rock crusher jaw crusher cone crusher. Include description. Categories. Selected category All. ... Allen Sherman Hoff Double Roll Crusher / Clinker Grinder 24" x 24" Refurbished. $3,499.99. or Best Offer.

Dual roll crushers, how they function - Mine Engineer.Com

A Factory Double Roller Rock Crusher With High Quality new type high quality double roll crusher /rollernew type high quality double roll crusher /roller crusher for mining/ore, find complete details about new type high quality double roll crusher /roller crusher for mining/ore,roller crusher for mining,mining stone crusher,sand making roll crusher from crusher supplier or manufacturer a ...

double roll crusher - miningshakingtable.com

Although its brief period of popularity passed some thirty-odd years since, and only a few sets were installed before interest reverted to other types, the high-speed double roll crusher developed by Thomas A. Edison shortly before the end of the last century warrants a place in any discussion-of crushing equipment. In 1960, the largest machine of this type the 6 x 7 foot "giant" rolls ...

Toothed Spiked Roller Mill Coal Roller Rock Crusher - YouTube

This model is capable of reducing most rock-like materials of 0.5in (13mm) feed size to minus No. 10 (2mm) at a capacity up to 3,000lbs/hr. Operates at 60Hz. Voltage of 230V or 460V must be selected at time of order. LC-14 Marcy® Double Roll Crusher features 9x12in (229x305mm), Dia.xW heavy 304 stainless steel rolls with Ni-Hard facings. The ...

China Brick Slag Clinker Feldspar Double Roller Crusher ...

Roll Crushers, What Are These Machines ... Coal plants will use roll crushers, either single roll or double roll, as primary crushers, reducing the ROM coal. Usually, these crushers will have teeth or raised forms on the face of the roll. (Roll crushers used for …

Roller Crusher, Double Toothed Roll Crusher, Smooth Roll ...

Roller Crusher Stone Cone Single Double Small with High Capacity. We manufacture Roller Crusher Stone Cone Single Double Small with High Capacity. We devote ourselves to mining machinery many years, and our machines have been exported to South Asia, South America, Africa, Middle East and some other area.

roller crusher,roller crusher price,roller crusher for ...

Double Roll Crusher is widely used for secondary and fine crushing in the industry of mining, building materials, chemical industry, metallurgy and so on. It can crush materials in middle hardness such as rocks, ore, coke, lump coal, slag,now our factory is the largest manufacturer and supplier of gravity mining equipment in China.shaking table,spiral chute,spiral chute manufacturer,shaking ...

Double Roll & Teethed Roll Crusher

China Top Marble Three Double Roll Mill Crusher Making Machine Price ... New Design Mini Mining Double Roller crusher Cement Rock Salt Roll Crusher Price For Sale ..... Mini hot sale double roll crusher designed by hongji gold supplier. Chat Online

double roll crusher ore crushing machine manufacturers

The applied material for teeth roller crusher are diverse. Double toothed roller crusher can crush limestone and rocks with compressive strength more than 200MPa. However, the most suitable materials for teeth roll crusher are clammy ones with water content between 25%-30% or hard material with mud inside. Since the teeth roll crusher has ...

3-Stage Rock Crusher: Online

double roller rock crusher for russia market; apa yang dimaksud crushing plant; energy saving jaw crusher for sale capacity 80 220 t h; galvanic interaction significantly; jaw crusher for lime dolomite; flat iron machine laundry equipment ypaiii 3000; what do you mean by 100 tpd; crusher plant conveyor layout; high fine cement milltin ore crusher

double roller rock crusher 1 - restoreservice.in

DOUBLE ROLLER CRUSHER from Tangshan Tianhe Environmental Protection Technology Co., Ltd.. Search High Quality DOUBLE ROLLER CRUSHER Manufacturing and …

Roll Crusher | Lump Breaker | Williams Crusher

Laboratory Roll Crusher. Lab use double roller small roll crusher crushing metallic ore and coal for analysis. US $860 8800 Tags: Lab Crusher Lab Double Roller Crusher Lab Crusher Machine Laboratory Sample Crusher Apparatus Roll Crusher For Mining. Get Price Rock Crusher Machine Price Wholesale, Machine Prices Suppliers

Small Roller Crusher Manufacturers - sankay-crusher.com

Sri lanka tooth roll crusher, 2018 stone crusher machine, gold crushing machine Henan Manufacturer Sell Rock Stone Tooth Double Roller Roll Crusher . Ore grinding Application and Roller Crusher Type lab double toothed roll crusher. Get Price Mini Crusher Machine, Mini Crusher Machine Suppliers .

gold mining machine double roller rock crusher

Double Roll Crusher is widely used for secondary and fine crushing in the industry of mining, building materials, chemical industry, metallurgy and so on. It can crush materials in middle hardness such as rocks, ore, coke, lump coal, slag,now our factory is the largest manufacturer and supplier of gravity mining equipment in China.shaking table,spiral chute,spiral chute manufacturer,shaking ...

2015 hot sale double roller rock crusher - 2PG - TARZAN ...

Rock Crusher, Rock Crusher Machine, Stone Prodution Line manufacturer / supplier in China, offering Brick Slag Clinker Feldspar Double Roller Crusher, Low Noise Rotary River Sand Trommel Vibrating Screen, High Temperature Fertilizer Rotary Drum Cooler and so on.

Roll Crusher - Metallurgist & Mineral Processing Engineer

Find great deals on eBay for roll crusher. Shop with confidence. Skip to main content. eBay Logo: ... rock crusher jaw crusher cone crusher. Include description. Categories. Selected category All. ... Allen Sherman Hoff Double Roll Crusher / Clinker Grinder 24" x 24" Refurbished. $3,499.99. or Best Offer.

roll crusher | eBay

Jul 05, 2018· Keene's RC46DR Double Roller Rock Crusher - Duration: 32:52. Inc. 1,103 views. 32:52. Loading more suggestions... Show …

roll crusher | eBay

Crushing rolls might, logically, include roll crushers of the sledging type, the name, by popular usage, is restricted to the double-roll machine (with either smooth or corrugated shells) which crushes entirely by pressure between the surfaces of the roll faces. The sledging type of either single or double-roll arrangement is usually differentiated by such titles as "roll crusher" or ...

Small Roller Crusher Manufacturers - sankay-crusher.com

Roller Crusher Roller Crusher is widely used for fine or superfine crushing in the industries of mining, construction materials, metallurgy, chemical industries and so on. It can crush all kinds of materials under middle hardness, such as ore, rock, coke, coal, clinker, ceramic raw materials, slag, refractory materials, chemical materials and so on.

Rock Crushers

Mar 03, 2016· Crusher Bearings: Knowing the basics leads to better care ... High shock loads and severe contamination make rock and aggregate crushers among the toughest applications for precision components—particularly roller bearings. ... In hammer mills and horizontal crushers, spherical roller bearings in solid or split pillow block housings generally ...

grinding machine mining machine double roller crusher

Roller Crusher Stone Cone Single Double Small with High Capacity. We manufacture Roller Crusher Stone Cone Single Double Small with High Capacity. We devote ourselves to mining machinery many years, and our machines have been exported to South Asia, South America, Africa, Middle East and some other area.

Double Roll Crusher, 13mm Particle Size - Gilson Co.

High Capacity Rock Crusher Double Roller Crusher, Find Complete Details about High Capacity Rock Crusher Double Roller Crusher,Double Roller Crusher Metal Recycling Machines Small Stone Cutting Machine,Stones Crusher Double Roller Crusher Manufacturer,Mobile Crushing Plant Stone Crushing Machine Pisolite Roller Crusher from Crusher Supplier or Manufacturer-Zhengzhou General Mining …

Crusher Bearings: Knowing the basics leads to better care

Jackshafts for control of roller speed are standard on double roll crushers, optional on larger Single Roll Crushers. Protective Spring Releases. Heavy-duty compression springs permit movement of floating roll to pass tramp metal and other uncrushables, avoiding overload and damage. Smaller Single Roll Crushers are equipped with a shear pin ...

gold mining machine double roller rock crusher

Double Roller Crusher, Rock Crusher Used, Spring Cone Crusher manufacturer / supplier in China, offering High Production Double Roller Crusher, Low Price Exporter Gypsum Powder Production Line, High Efficiency Pulverized Coal Crusher Price and so on.

Double Roller Crusher - Shandong Jiuchang Heavy Industry ...

Double roller crusher's the materials by relying on the two round rollers rotating at the opposite direction, and four-roll crusher crushes the materials by relying on the two pairs of round rollers rotating at the opposite direction.

Double-roller crusher - Knowledge - Shenyang Northern ...

Our products feature customized systems for high-volume reduction. Browse our complete line of heavy-duty size reduction products, including shredders, crushers, grinders, pulverizers and more below to discover how Williams Crusher can bring efficiency and quality to your industry.

Size Reduction Equipment | Pulverizers & Crushers ...

.ywords$ double roller rock crusher . Our Services. Service . 1) Pre-sale service:Freely provide project designing, process designing, select suitable equipment for you. 2) Order execution service: Provide equipment layout draw, foundation draw and detail equipment manauls.Timely report you the manufacturing schedule and related photos for keep monitoring.

DOUBLE ROLLER CRUSHER - techheir.en.alibaba.com

China Top Marble Three Double Roll Mill Crusher Making Machine Price ... New Design Mini Mining Double Roller crusher Cement Rock Salt Roll Crusher Price For Sale ..... Mini hot sale double roll crusher designed by hongji gold supplier. Chat Online

double roll crusher - miningshakingtable.com

double roller rock crusher for russia market; apa yang dimaksud crushing plant; energy saving jaw crusher for sale capacity 80 220 t h; galvanic interaction significantly; jaw crusher for lime dolomite; flat iron machine laundry equipment ypaiii 3000; what do you mean by 100 tpd; crusher plant conveyor layout; high fine cement milltin ore crusher

Double roller crusher,rock roller crusher,roll crusher ...

Roll Crushers, What Are These Machines ... Coal plants will use roll crushers, either single roll or double roll, as primary crushers, reducing the ROM coal. Usually, these crushers will have teeth or raised forms on the face of the roll. (Roll crushers used for …

China High Production Double Roller Crusher - China Double ...

Double-roller crusher Apr 15, 2019. Double-roller crusher are used f or the mineral processing, chemical, cement, refractories, abrasive, building materials and other industrial department in the crushing of various high and medium hardness of the ore and rock, especially in the building materials industry to produc e of melon and mung bean s and and other products.

Shuguang High Buying Rate And Advanced Double Roll Rock ...

New and Used Roll Crushers for Sale Savona Equipment is a roll crusher supplier worldwide.We can supply new and used belt-driven roll crushers. There are in four designs of roll crushers: single roll crushers, double roll crushers, triple roll crushers, and quad roll crushers.Roll Crushers are built to handle primary, secondary and tertiary stage crushing of friable materials such as coal ...

High Capacity Rock Crusher Double Roller Crusher - Buy ...

China Double Roller Crusher catalog of Stone Mining Equipment Crushing Machine Supplier From China Roller Crusher, Double Roller Crusher for Crushing Gypsum with High Efficiency provided by China manufacturer - Shandong Jiuchang Heavy Industry Technology Co., Ltd., page1.

double roller rock crusher 1 - restoreservice.in

Roll Crusher for sale & rental | Rock & Dirt. Search from 1000's of listings for new & used Roll Crushers for sale or rental updated daily from 100's of dealers & private sellers.

Dual roll crushers, how they function - Mine Engineer.Com

double roll roller crusher, rock crushing.source from a double roller double teethed limestone crusher at low shuguang high buying rate and advanced double roll rock. raymond grinding mill manufacturers in. mobile impact crusher stable, advanced mobile vibrating screen is equip c6x series jaw crusher. c6x series jaw crusher double wedge ...

A Factory Double Roller Rock Crusher With High Quality

3-Stage Rock Crusher RC46DR. $10,650.00. ... The material then falls down into the first roller mill and is crushed down from 30 to 80 mesh. The material then drops into a second roller mill which reduces matter down to 80 to 150 mesh. With the upgraded double roller mill option, you can do it …

New & Used Roll Crushers For Sale & Rental - Rock & Dirt

Double roller crusher can be used for intermediate and fine crushing such hard and medium hard ore and rock in mineral separation,chemical industry, cement, corhart, abradant materials, building materials and other industrial department, especially for producing rice-like and bean-like stone. The roll crusher is of simple structure, reliable operation and low cost.

New & Used Roll Crushers for Sale | Rock Crushing ...

Find great deals on eBay for roll crusher. Shop with confidence. Skip to main content. eBay Logo: ... rock crusher jaw crusher cone crusher. Include description. Categories. Selected category All. ... Allen Sherman Hoff Double Roll Crusher / Clinker Grinder 24" x 24" Refurbished. $3,499.99. or Best Offer.

Dual roll crushers, how they function - Mine Engineer.Com

A Factory Double Roller Rock Crusher With High Quality new type high quality double roll crusher /rollernew type high quality double roll crusher /roller crusher for mining/ore, find complete details about new type high quality double roll crusher /roller crusher for mining/ore,roller crusher for mining,mining stone crusher,sand making roll crusher from crusher supplier or manufacturer a ...

double roll crusher - miningshakingtable.com

Although its brief period of popularity passed some thirty-odd years since, and only a few sets were installed before interest reverted to other types, the high-speed double roll crusher developed by Thomas A. Edison shortly before the end of the last century warrants a place in any discussion-of crushing equipment. In 1960, the largest machine of this type the 6 x 7 foot "giant" rolls ...

Toothed Spiked Roller Mill Coal Roller Rock Crusher - YouTube

This model is capable of reducing most rock-like materials of 0.5in (13mm) feed size to minus No. 10 (2mm) at a capacity up to 3,000lbs/hr. Operates at 60Hz. Voltage of 230V or 460V must be selected at time of order. LC-14 Marcy® Double Roll Crusher features 9x12in (229x305mm), Dia.xW heavy 304 stainless steel rolls with Ni-Hard facings. The ...