Weldon AGN4

Specs verified 2026-10-03 · weldonsolutions.com Updated 2026-10-03

Image: weldonsolutions.com, Weldon Solutions

Key Specifications

Spindle Power

5 hp (3.7 kW), T.E.F.C.

max work swing

7.08 in (180 mm)

max distance between centers

9.84 in (250 mm)

max workpiece weight

44 lb (20 kg)

workhead type

Live/dead spindle

workhead speed

0-1,400 rpm (variable)

How much does the Weldon AGN4 cost?

Price estimate

Uncertain

We do not have a price for the Weldon AGN4 that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.

Overview

The Weldon AGN4 is a compact CNC cylindrical grinder for small parts: 7.08 in (180 mm) of swing, 9.84 in (250 mm) between centers and a workpiece limit of 44 lb (20 kg). The whole machine weighs 4,600 lb (2,087 kg) on a cast iron base and measures 58 x 76 x 74 in (1,473 x 1,930 x 1,880 mm) (W x D x H), so it goes into cells and corners where a full-size grinder would not. For scale, the G300 weighs 11,000 or 14,000 lb (4,990 or 6,350 kg) and carries a 10 hp (7.5 kW) wheel motor.

The AGN4's wheel motor is 5 hp (3.7 kW), T.E.F.C., turning a 14 x 2 x 5 in (356 x 51 x 127 mm) wheel (OD x width x ID) on a hydrodynamic spindle bearing at up to 8,800 SFPM. The wheelhead is fixed at 0° or 30°. It does not swivel between the two, so the choice between a straight plunge and an angled approach that reaches a shoulder along with a diameter has to be settled when the machine is specified.

The workhead is a live/dead spindle, variable from 0 to 1,400 rpm on a 1.9 hp (1.4 kW) AC servo motor. Running dead, the part turns on stationary #2 Morse centers at both ends, the usual route to good roundness on pins and small shafts. Running live, the spindle drives a chuck, and the 0.625 in (16 mm) through hole sets what can pass behind it. The tailstock quill moves 1.2 in (30 mm) under air pressure, which keeps part changes quick. Taper correction comes from a swivel adjustment of +/- 1°.

Both axes are short and fast. The worktable travels 14 in (356 mm) with a 640 in/min (16.3 m/min) rapid. The wheelhead travels 6.7 in (170 mm) at up to 320 in/min (8.1 m/min), with programmable feed from 0.00001 to 200 in/min. X and Z each use a 0.6 hp (0.4 kW) AC servo motor under a FANUC 0i-TF Plus control. Site services are modest: 208/240 V, 3-phase, 60 Hz, plus 5 SCFM of air at 80 psi.

Full Specifications

Parameter	Value
Max Work Swing	7.08 in (180 mm)
Max Distance Between Centers	9.84 in (250 mm)
Max Workpiece Weight	44 lb (20 kg)
Workhead Type	Live/dead spindle
Workhead Speed	0-1,400 rpm (variable)
Workhead Center Taper	#2 Morse
Workhead Through Hole	0.625 in (16 mm)
Workhead Motor	1.9 hp (1.4 kW) AC servo
Spindle Motor Power	5 hp (3.7 kW), T.E.F.C.
Wheel Size	14 x 2 x 5 in (356 x 51 x 127 mm) (OD x width x ID)
Wheel Speed	8,800 SFPM max
Wheel Spindle Bearing	Hydrodynamic
Wheelhead Angle	0° or 30° fixed
Wheelhead Travel	6.7 in (170 mm)
Wheelhead Rapid Traverse	320 in/min (8.1 m/min)
Worktable Travel	14 in (356 mm)
Table Rapid Traverse	640 in/min (16.3 m/min)
Programmable Feed Rate	0.00001-200 in/min (wheelhead)
Swivel Taper Adjust	+/- 1°
Tailstock Center Taper	#2 Morse
Tailstock Quill Travel	1.2 in (30 mm), pneumatic
Axis Servo Motors	0.6 hp (0.4 kW) AC servo (X and Z)
CNC Control	FANUC 0i-TF Plus
Power Requirement	208/240 V, 3-phase, 60 Hz
Air Requirement	80 psi, 5 SCFM
Machine Dimensions	58 x 76 x 74 in (1,473 x 1,930 x 1,880 mm) (W x D x H)
Machine Weight	4,600 lb (2,087 kg)
Base Construction	Cast iron

Specifications sourced from weldonsolutions.com — verified 2026-10-03

Strengths & Limitations

Strengths

Compact and light for a CNC grinder: 58 x 76 x 74 in (1,473 x 1,930 x 1,880 mm) and 4,600 lb (2,087 kg) on a cast iron base
Live/dead workhead spindle, variable 0-1,400 rpm, so one machine grinds between dead centers or drives a chuck
Pneumatic tailstock quill with 1.2 in (30 mm) of travel for quick part changes
Rapids of 640 in/min (16.3 m/min) on the table and 320 in/min (8.1 m/min) on the wheelhead keep idle time short on small parts
Wheelhead feed is programmable from 0.00001 in/min up to 200 in/min, and the wheel runs on a hydrodynamic spindle bearing
Runs on 208/240 V, 3-phase power and 5 SCFM of air at 80 psi

Limitations

Work is limited to 44 lb (20 kg), 7.08 in (180 mm) of swing and 9.84 in (250 mm) between centers
The wheelhead angle is fixed at 0° or 30°; it is one or the other, not adjustable between jobs
Swivel taper adjustment is +/- 1°, enough to correct taper but not to set up a steep one
The 5 hp (3.7 kW) wheel motor is half the 10 hp (7.5 kW) of the G300, which caps stock removal on wider plunges
The 0.625 in (16 mm) workhead through hole and #2 Morse centers restrict the machine to small workholding

Best For

Pins, spools and small shafts up to 9.84 in (250 mm) between centers Parts under 44 lb (20 kg) ground between dead #2 Morse centers Small chucked parts on the live spindle at up to 1,400 rpm Shops short of floor space or limited to a 208/240 V, 3-phase supply Diameter-and-shoulder plunges on a machine built with the 30° wheelhead

Frequently Asked Questions

01 What size parts can the Weldon AGN4 grind?

The table lists a maximum work swing of 7.08 in (180 mm), 9.84 in (250 mm) between centers and a maximum workpiece weight of 44 lb (20 kg). Worktable travel is 14 in (356 mm) and wheelhead travel is 6.7 in (170 mm). The grinding wheel is 14 x 2 x 5 in (356 x 51 x 127 mm), outside diameter by width by bore.

02 Can the wheelhead angle on the AGN4 be changed?

No. Weldon lists the wheelhead angle as 0° or 30° fixed, so a given machine has one or the other. What can be adjusted is the swivel for taper, by +/- 1°. If your parts need both straight plunges and angled shoulder grinding, raise that with Weldon before ordering.

03 What does the live/dead workhead spindle do?

It lets the workhead run two ways. As a dead spindle the #2 Morse center stays still and the part rotates on it, which is the normal method for grinding between centers. As a live spindle the nose itself rotates to drive a chuck. Speed is variable from 0 to 1,400 rpm from a 1.9 hp (1.4 kW) AC servo motor, and the through hole is 0.625 in (16 mm).

04 What power and air supply does the AGN4 need?

Electrical supply is 208/240 V, 3-phase, 60 Hz. Compressed air is 5 SCFM at 80 psi, and the tailstock quill is pneumatic, so the air supply is part of normal operation. The machine weighs 4,600 lb (2,087 kg) and occupies 58 x 76 in (1,473 x 1,930 mm) of floor, 74 in (1,880 mm) high.

05 How does the AGN4 compare with the Weldon G300?

The AGN4 is the smaller machine by a wide margin. Its wheel motor is 5 hp (3.7 kW) against 10 hp (7.5 kW) on the G300, and it weighs 4,600 lb (2,087 kg) against 11,000 or 14,000 lb (4,990 or 6,350 kg). Both use the FANUC 0i-TF Plus control.