GYROPACTOR
NAKAYAMA VSIBest solu�on for shaping aggregates and M-sand.
www.ncjpn.com

ver.2.07_20230718

NAKAYAMA VSI developed with tenacious eﬀorts and experience for 30 years
NAKAYAMA has made 3 beneﬁts on VSI a�er development eﬀorts.
Nakayama SR series VSI is highly advanced crusher, which can be widelyused in quarries, sand produc�on plants, and recycling plants.

BENEFITS

Low
running cost
p.03 - 04

Highperformancep.05 - 06

Easymaintenancep.09 - 1001 ll 02

Design concept

Low running cost
The rotor rota�on is reversible, giving equal wear on both sidesof the part, thus cuts down the parts replacement down�meinterval to a half. The rotor is not one-piece construc�on, but it
is made up of assembled parts. Therefore, there is no need torepair or replace the rotor itself. And the total maintenancecost on VSI will be minimised.

Shorter passage in the rotor
The passage in the rotor is shorter than other VSI toreduce power consump�on and to avoid vibra�oncaused by the unbalanced rock distribu�on in thelong passage.

NAKAYAMA VSIOTHER VSIREVERSIBLE, OPEN TYPE ROTORREVERSIBLE

ROTATION

Cuts down thereplacement downparts
�me to a half.

ABRASION-RESISTANT TIPS
made of Tungsten CarbideSec�onalised rotor for easy
parts replacement
Adjustable par ts ﬁ�ng posi�onmaximises the rate of parts u�liza�onand minimises the wear costs.

ROCK-ON-METAL crushing chamber (Type A)
ANVIL GEOMETRY for maximum crushing eﬀect

No blocking of material in the rotor
with the ample rotor passage

ROCK-ON-ROCK crushing chamber (Type D)
ROCK BED with op�mum slope angle for shaping

The rotor speed is rela�vely slower than that of theVSI of other manufacturers. The op�mum slower
rotor speed enables lower power consump�on, andwhat is more, the produc�on of unnecessary ﬁnes
smaller than 0.075mm can be minimised.
03 l

l 04

Design concept

High performance
The inter-par�cle crushing around the sloped rock bed gives
eﬀec�ve crushing by and among the par�cles of aggregates.
There is no need to speed up the rotor to hurl the rock strongly
against the ver�cal rock bed or anvils using a high power motor.
Slower rotor speed helps to prolong the service life of the parts.

Material feedLower dust emission
The ﬂow of air inside the VSI is designed tocirculate within the machine to mininise thedust emission.

Upper casing
Guide ﬂange

Slower rotor speed

Upper frame

The Nakayama VSI was designed to assureop�mal rock bed forma�on around the rotor.
Not like other VSI, the wall behind therock-bed is higher and the rock bed angle isnot steep. Therefore, the rock hurled from therotor is subjected to par �cle-to-par �cle
impac t crushing. This is the reason whyNakayama VSI gives be�er VSI eﬀects inaggregate shape and grada�on at a rela�vely
slow rotor speed (40-50m/sec).

Hydraulic casing opener
Air Circula�on
Crushing chamberRotor

ComparisonVer�cal sha�Rock bed(or anvil)

PulleyWithoutVSIDischarge
20 - 10mm

CHANGE DEAD STOCK TO PRODUCTS
Unsellable products (eg. 40-0mm, 20-0mm, 5-2.5mm, etc) stocked in quarries causea headache for quarry managers. Nakayama VSI can change these non-marketable
stock to sellable products.

With VSI05 ll 06

10 - 5mm5 - 0mm

MALAYSIAN QUARRY ”Y” MANAGER’S COMMENTS：
Before installa�on of VSI:
The produc�on of M-Sand, before using Nakayama VSI, wasabout 25% of the total plant produc�on of 160TPH ; namely40TPH
The produc�on level of this Quarry “Y” was 3-0mm. 5-3mm
size was rejected by the screen as the waste material
because this 5-3mm size shows ﬂaky and elongated size inthe M-Sand.
This rejected 5-3mm size was no use and made mountains ofstockpile.

A�er installa�on of VSI:
A�er installa�on of Nakayama VSI (SR100), the produc�on dras�callyincreased.
The total plant produc�on of 160TPH doubled. M-Sand produc�onincreased by 4 �mes; from 40TPH to as much as 160TPH, and that,much be�er sand shape. It was not necessary to separate with 3mmmesh. The crushed sand by Nakayama VSI of 5-0mm was high-quality
M-Sand.
Thanks to Nakayama VSI, the produc�on increased dras�cally withthe op�mum se�ngs, giving cubical product shape and grada�onideal for the M-sand, the customer said.

QUARRY “Y” FLOW SHEET//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////FROMINTERMEDIATESTOCKYARDSURGEBIN

2ND CONE
CRUSHER

3RD CONE
CRUSHER+30-25mm
VIBRATING
SCREEN
320t/h

NAKAYAMA VSI
SR100C
VSI feed size 30/25-0mm
VSI feed rate 320TPH

VSI EFFECT ON
AGGREGATESBefore installa�on of VSI+20mm
20-13mmVIBRATING
SCREEN13-5mm20-5
A�er installa�on of VSI

140t/h20〜5mm20〜13mm

20t/h

13〜5mm320t/hApplica�on - Outstanding eﬀect with Nakayama VSI
20-507 ll 08

160t/h

5〜0mm

Design concept

Easy maintenance
The wear parts are simple in design, enabling easy andsafe ﬁ�ng. Maintenance can be minimised allowing
long-�me opera�on without servicing. Furthermore, therotor is open type and there will be virtually no blockageof foreign material in the rotor, allowing con�nuous opera�on for maximum produc�on.

Wide-open top cover

Parts management

Wide-open top cover (lid) is hydraulically raised andlowered providing easy and instant access to theopen rotor for servicing and parts replacement.

NAKAYAMA keeps a large amount of parts instock to enable us to supply the necessary
parts immediately to the customers (Partsstock total 7,50 0 in item and 20,0 0 0 inquan�ty)

N-Link Infinite possibility when the plant equipment is connected to internet.
The plant opera�ng scene canbe monitored by the camera.
The opera�ng condi�on of theplant equipment and produc�onoutput are also easily accessible.
An emergency alarm and daily
produc�on records are automa�callytransmi�ed to oﬃce computersand smart phones.

The operating condition canbe monitored by cameras.

The production output can bemonitored on real-time basis.

The operating conditions canbe monitored.

E-mail can be automatically transmitted.
2: The massage is received
by Outlook so�ware.
1: The machine sends the mail.

Green box

The plant equipment can becontrolled from a remote location.

(Data recording device)

The plant operating Programme, suchas plant ag gregates f low, c an bechanged from a remote place.

Automa�c data recording and storage ofthe equipment state is possible when atechnical problem occurs.
It is also possible to record the datereplacement �me of each spare part, to improve servicing and scheduledown�me maintenance.

Crushed stoneOﬃceOutside09 ll 10

4: Instant and automa�c storage of
CSV ﬁles in the designated folder.
(Outlook Visual Basic Func�on)

3: In case “abnormal ”
should be included in the mail�tle, the mail will be instantly
and automa�cally transferred
the designated address(Outlook Assor�ng RuleFunc�on)Computer

GUIDANCE CURVESCAPACITY / MOTOR REQUIREMENT (Based on Type D, Rock-on-rock crushing)
GUIDANCE CURVE vs SPEED & ROCK HARDNESS

50-0mm VSI feed

FEED SIZEROTOR SPEED (m/sec)
HARD (160MPa or more)ROCK HARDNESSMEDIUM (100 ~160MPa)
FRIABLE (100MPa or less)

MODEL

50-0mm40 45 50CA B
DB CEC DSR 100C

SIZE (mm)991.023451020304050

100

MOTOR POWER ( KW )ROTORSPEED

110

132

150

190

220

250

40 m/s180215245

310--45 m/s

145

175

200

250

290

330

50 m/s

-

135

150

190

220

250

Note: 1) Op�onal rotor top plate is available for faster speed range between 50-60m/sec.
2) Motor shall be VERTICAL type.
3) Capacity is based on the con�nuous feed of andesite having a speciﬁc gravity of 2.6.
4) The capacity varies depending on the material - size, hardness, toughness and moisture content and the feeding method.

UNIT : TPH (ton per hour)80

DIMENSIONS

706050402350

Φ457

E D C B A

108654Φ19252950

2345

SIZE (mm)10203040501250

28-0mm40 45 50
F G H
IG H
IJH

2350

FEED SIZEROTOR SPEED (m/sec)
HARD (160MPa or more)ROCK HARDNESSMEDIUM (100 ~160MPa)
FRIABLE (100MPa or less)

1001100

991.0

VSI UNIT can be loaded into a 40FT container.

GUIDANCE CURVE vs SPEED & ROCK HARDNESS

28-0mm VSI feed

PERCENTAGE PASSING (%)

9590807060504030201900

FEED (50-0mm)

700201190

302300PERCENTAGE PASSING (%)

9590175

2000

2140
5925

1610

1002140
2340

100■ In order to keep our policy of con�nuous development, speciﬁca�ons are subject to change without no�ce.

JI H G F

SPECIFICATIONSFEED (28-0mm)

10865411 ll 12

FEATURES● Reversible rota�on cuts down parts replacement down�me.
● Assembled (sec�onalised) rotor made up of compnents for easy parts replacement.
● Hydraulic top cover opener for easy servicing.
● Vibra�on sensor to detect excessive vibra�on for countermeasure at an early stage.
● VSI UNIT can be loaded into a 40FT container.

NAKAYAMA VSI – GYROPACTOR in opera�on