Hartford Horizontal Machining Centers (HMC)

Hartford HMC-6

Q: How much does the Hartford HMC-6 cost?

The price estimate for the Hartford HMC-6 is uncertain: we have no price for it that we can cite and no estimate we can stand behind, so we give no figure. Configuration, tooling, automation and installation move the final price substantially. A specific price can be requested at https://machinetoolindex.com/machines/hartford-hmc-6#price; the request is passed to Hartford or an authorised dealer.

Specs verified 2026-10-04 · hartfordcnc.com Updated 2026-10-04

Image: hartfordcnc.com, Hartford

Key Specifications

Spindle Taper

#50

Tool Capacity

A: 40 / 60 / 90 pcs

Table Size

630 x 630 mm (24.8 x 24.8 in)

Spindle Power

15 /18.5 opt. 18.5 / 22, 22/26 kW (Cont. / 30 min)

max table load

600 kg (1,323 lb)

x axis travel

750 mm (29.5 in)

How much does the Hartford HMC-6 cost?

Price estimate

Uncertain

We do not have a price for the Hartford HMC-6 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 Hartford HMC-6 is a 50-taper horizontal machining center with a 630 x 630 mm (24.8 x 24.8 in) pallet. Travels are 750 mm (29.5 in) in X, 700 mm (27.6 in) in Y and 650 mm (25.6 in) in Z, and the pallet load is 600 kg (1,323 lb).

A 630 mm pallet with a #50 spindle is the heavy-cutting end of this size class, where many machines carry a smaller taper. Hartford's spindle for the HMC-6 is a gear type listed at 6,000 rpm. It is an ISO 50 spindle with a two-step transmission and large-module spur gears, described by the maker as giving high torque at low speed for heavy-duty cutting. The motor is 15 / 18.5 kW, with 18.5 / 22 kW and 22 / 26 kW as options (Cont. / 30 min). No built-in high-speed spindle is listed for this size; that starts with the HMC-8.

The automatic pallet changer is anchored on the machine base instead of standing beside it, which Hartford says removes a source of accuracy deviation. It is servo-driven with a switching speed of 12 sec. Pallets seat on 4 taper cones with air blast on the cone surfaces and are held by a hydraulic drawbar.

Tool capacity is 40, 60 or 90 with BBT50 shanks (CAT50 and DIN69871 as alternatives). The column is a one-piece casting on a T-shape base, with 580mm between the linear guideways.

Full Specifications

Parameter	Value
Table Size	630 x 630 mm (24.8 x 24.8 in)
Max Table Load	600 kg (1,323 lb)
X Axis Travel	750 mm (29.5 in)
Y Axis Travel	700 mm (27.6 in)
Z Axis Travel	650 mm (25.6 in)
Spindle Taper	#50
Spindle Speed Gear	6,000 rpm
Tool Capacity	A: 40 / 60 / 90 pcs
Tool Shank	BBT50 (CAT50 / DIN69871)
Spindle Motor Power	15 /18.5 opt. 18.5 / 22, 22/26 kW (Cont. / 30 min)

Specifications sourced from hartfordcnc.com — verified 2026-10-04

Strengths & Limitations

Strengths

#50 gear spindle on a 630 x 630 mm (24.8 x 24.8 in) pallet machine
Motor options up to 22 / 26 kW (Cont. / 30 min)
Servo-driven pallet changer anchored on the base, switching in 12 sec
Tool magazine of 40, 60 or 90 tools
Pallet location on 4 taper cones with air blast

Limitations

Only the 6,000 rpm gear spindle is listed; the built-in spindle option starts with the larger HMC models
Pallet load of 600 kg (1,323 lb) is low next to the 1,500 kg (3,307 lb) of the HMC-800
The table gives no B-axis indexing increment, rapid traverse or maximum workpiece swing
BBT50 tools are heavier and slower to change than smaller-taper tools on similar-size machines

Best For

Cast-iron and steel housings machined on several faces Heavy boring and face milling within a 630 mm pallet Two-pallet production with loading during the cut Shops standardised on 50-taper tooling

Frequently Asked Questions

01 What is the pallet size of the Hartford HMC-6?

630 x 630 mm (24.8 x 24.8 in), with a maximum average load of 600 kg (1,323 lb). Axis travels are 750 mm (29.5 in), 700 mm (27.6 in) and 650 mm (25.6 in) in X, Y and Z.

02 What spindle does the HMC-6 use?

A #50 gear-head spindle listed at 6,000 rpm. Hartford describes it as an ISO 50 gear type spindle with two-step transmission. The motor is 15 / 18.5 kW, optionally 18.5 / 22 kW or 22 / 26 kW, as continuous / 30 min ratings.

03 How does the pallet changer on the HMC-6 work?

The auto pallet changer is integrated on the machine base and is servo-driven, with an APC switching speed of 12 sec. Pallets are positioned on 4 taper cones, with air blast on the cone surface to keep chips and fluid out, and clamped by a hydraulic drawbar.

04 What is the difference between the HMC-6 and the HMC-600?

Hartford publishes the same specification table for both: the same pallet, travels, 6,000 rpm gear spindle, motor options and 40 / 60 / 90 tool magazine. The product pages do not explain the difference between the two model names, so it has to be asked of Hartford.