Nomura 21YB2 Series

More powerfull!!For large and difficult-to-cut material. / High speed!!Eliminated wasteful idle time.

Power up main spindle motor ($1: 3.7→5.5kW、$2: 2.2→3.7kW) Rapid feed rate speed 36m/min. (Conventional model:15m/min)(＊z axis 32m/min.) New CNC M70V (MITSUBISHI) built-in (PLC computing power:4 times the speed of conventional model)

Operation panel	Main Spindle
Mitsubishi M70V built-in. Rapid feed rate speed of 36m/min.(*Z axis 32m/min)	Difficult-to-cut-material can be machined in easier by the main spindle with 5.5kW.

Back Spindle	Casting
Power up Back Spindle motor 3.7kW	Our casting supports accuracy and rigidity.

Chip Tank	Parts Conveyor
The chip tank is specious. There is a large-capacity cutting oil tank under the chip tank. Provided sufficient oil and prevented from increased temperature.	Finished parts are taken out of the machine with parts conveyor and are placed in stock on the parts receiver(oil-bath style).

Tool Post

High efficiency production and complicated machining can be possible by the optimum alignment of $1 and $2. Tool post is made of special casting iron which is strong for abrasion resistance. Sliding surface is crafted by scrapers, which ensures longer-lasting and high rigid.

 

 

Main Tool Post

Tool		Size
Standard	OD Tool	□16×5
	ID Tool	4 (ER16×3 + ER20×1)
	Live Tool	6 (ER16×1 + ER20×5)
Option	E unit	3 Live tool (ER16×1 + ER20×2) 3 off-center tool (ER11)
Option	OD Tool	口20×6 (Direct mount type)

 

Back Tool Post

Tool Name		Size
Tool Type A (Standard)	OD Tool	□16×2
	ID Tool	ER16×3
	Live Tool	ER16×2
Tool Type B (Option)	OD Tool	□16×1
	ID Tool	ER16×3
	Live Tool	ER16×3
Tool Type C (Option)	OD Tool	□12×1
	ID Tool	ER16×3
	Live Tool	ER16×1
	Off-center Tool	ER11×3
ID Tool (Option)		ER20×3

 

Tool presetter Nomura's original "Tool Presetters" increase machine utilization through "off machine" tool presetting of quick change tooling, reducing the time required to replace and adjust tools up to 60%. The Nomura Tool Presetter is a microscope-type unit that presets a turning tool to the same gauge length. This makes programming and operation much easier. It also makes it unnecessary to "touch off" tools after they are mounted on the machine, making the tool change process a 2-screw operation. With this unit, tooling can be set up even while the machine is running parts. Tooling can be quickly changed, and you can get back into operation fast.

 

Safety System (Standard Equipment)

Coolant oil cut-off detecton

• Stops the machine automatically when the pressure of coolant oil decreases below specified level.

Lightning surge protection function

• Protects electronic circuit from high voltage to shutdown noise such as lightning.

Main spindle load detection mode

• Stops the machine detecting defects in the main spindle when standard load and actual main spindle load are different.

Door safety interlock switch

• Causes the main power breaker to trip and the power to shut down when electric cabinet cover is opened.

Auto power interception

• Switches off the power breaker on the machine automatically when the machine is stopped during the automatic operation for any reason.

Cut-off tool breakage detector

• Stops the machine automatically detecting materials that cannot be completely cut-off due to the breakage failure of the parting tool.

Tap breakage detector (Optional)

• Stops the machine automatically detecting broken tap while processing the edge face of the tap.

 

Options

Automatic fire extinguisher Automatically put out the fire and breaks the power source when fire happens.

Signal warning light, 3-stage type Facilitate confirmation in the distance on how the machine is working.

Oil mist collector Collects floating mist and helps for better working environment.

 

Specification Item

	Specification Item	Specification Value
Max.Machining Capacity	Machining diameter	φ32mm (Option.φ25mm)
	Machining length	190mm /1 chuck
	Max. Parts unloading length	93mm
Main spindle	Main spindle through-hole diameter	φ37mm (φ27mm)
	Main spindle RPM	8,000r.p.m. max.
	Max. no. of tools (as standard)	22
$1	OD (□16×150mmMax)	5
	ID Frontal hole	4 (ER16×3 + ER20×1)
	Live tool	6 (ER20×5 + ER16×1)
	Max frontal drill diameter	φ13mm
	Max. frontal drill length	50mm
	Max. frontal tap diameter	M10×1.5
	Max. live tool spindle drill diameter	φ8mm
	Max.live tool spindle tap diameter	M8×1.25
	Live main tool spindle	Max 6,000r.p.m
$2	OD (□16×150mmMax)	2
	ID Frontal hole	3 (ER16)
	Live tool	2 (ER16)
	Max. frontal drill diameter	φ18mm
	Max. frontal drill length	60mm
	Max. frontal tap diameter	M8×1.25
	Max. live tool spindle drill diameter	φ6mm
	Max. live tool spindle tap diameter	M6
	Feed rate	Z1,Z2 : 32m/min. X1, X2, Y1, Y2 : 36m/min
	Min. command unit	0.0001mm
	Main spindle C-axis min. command unit ($1, $2)	0.001°
Motor	Main spindle motor	3.7/5.5kW
	Live tool motor	0.75/1.5kW
	Sub spindle motor	1.5/3.7kW
	Sub live tool motor	0.75/1.5kW
	X1, Y1, Z1, X2, Y2, Z2	1.0kW
	Coolant pump	0.25kW × 2
	Lubricant pump	0.003kW
Dimensions and Others	Main spindle center height	1000mm
	Input power capacity	25kVA
	Pneumatic pressure & flow rate	0.5MPa, 6.4L/min.
	Coolant tank	100L
	Lubricant tank	0.8L
	W × D × H	2,275 × 1,185 × 1,825mm
	Weight (incl. options)	3,030kg
NC Standard Function	MITSUBISHI NC	M70V TypeA
	NC display (10.4 color TFT LCD)
	Machining program memory capacity 1,280m
	Number of tool off-set correction (40pcs)
	Background programming editing function
	Main spindle C-axis function
	User macro function
	Tool nose wear compensation
	Corner chamfering/Corner rounding
	Fixed cycle
	Complex fixed cycle
	geometric commands
	Oeration manual
	Serial In/Output interface
	CF Card interface

 

Standard Accessories

• ID attachment

• Live tool unit

• Back tool unit A
  2OD tool + 3 ID tool + 2 Live tool

• Main spindle cooling unit(for main and back)

• Synchronous rotary guide bush unit / transmission unit

• Drill holder

• Tap holder

• Tool holder

• Main: Chuck sleeve / Spring / Spindle cap(1 set)

• Back: Chuck sleeve / Spring / Spindle cap(1 set)

• Auto power interception

• Automatic lubricator(with level detector)

• Coolant oil unit(for main and back)

• Coolant oil cut-off detector (for main and back)

• Main spindle load detection mode

• Door safety interlock switch

• Working light (LED light)

• Parts conveyor (with parts recever and basket)

• Parts catcher

• Leveling pads

 

Optional Accessories

• $1

  • 3 ID attachment (ER20×3)

  • E unit
    3 Live tool (ER16×1 + ER20×2)
    + Off-center drill (ER11)

• $2

  • Back tool Type B
    1 OD tool (口16) + 3 ID tool (ER16) + 3 Live tool (ER16)

  • Back tool Type C
    1 OD tool (口12) + 3 ID tool (ER16) + 1 Live tool (ER16) + 2 Off-center drill(ER11)

• Sleeve & nut for synchronous rotary bush

• Fixed guide bush unit

• Bush sleeve & nut for fixed guide bush

• Tap breakage detector (for main and back)

• REGO-FIX cap & wrench

• Tool presetter

• Manual pulse generator 37P

• NC display lanuage(English / Chinese / Korean and others)

• Singal warning light(1-stage and 3-stage type)

• Chip conveyor

• Medium pressure coolant

• Automatic fire extingushisher

• Dent preventive kit

• Oil mist collector

• Specified color

• Tooling

• Working tool kit

• NC manual

 

 

Note:

The above-mentioned machine capabilily is for the case when work material is SUS303.
Depending on the processing condition such as the qualily of work material and the tools to be used, machine capabilities values may differ from the above-mentioned values.

 

The specification based on the specifications applied within Japan. Specifications are subject to change without notice.

 

This product could be classified as strategic item or other export regulated under the Foreign Exchange and Foreign Trade Law. Contact our sales representative when exporting this product.

 

 

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