Long Milling Arbors
Product Code : LSK-MMTM-10611
Long Milling Arbors (SKU LSK-MMTM-10611), often shortened to LM arbors, are cutter-carrying shafts for horizontal and universal milling machines, held in the spindle by a drawbar and supported at the outer end by bearing bushes in the overarm brackets. They are used in machinist and tool-room training at ITI centres, polytechnics, engineering colleges and TVET institutes. Science Lab Supplies ships these arbors from Ambala, India, to institutes, contractors and distributors.
Specifications
Taper, hardness, concentricity and thread options for the LM arbors appear one per row below. In short, they are forged manganese-chromium alloy steel hardened to 58-62 HRC, take size 30, 40 or 50 tapers as well as BT and Morse tapers, hold concentricity to 0.015-0.030 mm, and use spacers to position the cutters.
| Specification | Value |
|---|---|
| SKU | LSK-MMTM-10611 |
| Material | Forged manganese-chromium alloy steel |
| Hardness | 58-62 HRC |
| Construction | Sturdy; withstands wear and heavy loads on cutters |
| Standard tapers | Size 30, 40 and 50 |
| Other tapers | BT and Morse taper |
| Length | Chosen to suit the machine and its brackets (from 100 mm) |
| End thread (standard) | RH |
| End thread (on request) | LH |
| Concentricity | 0.015-0.030 mm |
| Spindle fixing | Drawbar |
| Outer support | Bearing bushes fitting into the brackets |
| Cutter positioning | Spacers |
| Machines | Horizontal and universal milling machines |
| Full set | Arbor with bearing bushes, spacers, nut and keys |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Long Milling Arbors
These arbors mount milling cutters on horizontal and universal milling machines. In training they are used for straddle, gang and slab milling, where one or more cutters are spaced along the arbor and the outer bush keeps the long shaft rigid under load.
- ITI Machinist trade: slab, straddle and gang milling setups on a horizontal machine such as the Universal Milling Machine.
- Tool and Die Maker training: setting cutter positions with spacers.
- TVET machining modules: arbor selection, fitting and drawbar tightening.
- Diploma and B.Tech workshop technology: horizontal milling demonstrations, with cutting forces read on the Milling Tool dynamometer.
Select the thread against spindle rotation so it does not loosen: LH threads for clockwise rotation and RH threads for anticlockwise. Shorter arbors give better performance where the brackets allow.
Standard Scope of Supply
A full set of Long Milling Arbors comprises the arbor with its bearing bushes, spacers, nut and keys. To order the right arbor, state the taper, the length the machine brackets allow, and the end thread (RH or LH) required for your spindle rotation.
Packing, MOQ and Lead Time
A quotation can be prepared for a single arbor set or several sets in different tapers and lengths. It lists packing, delivery time and price for each, and cutters or other vocational training equipment can be added to it.
With an Importer-Exporter Code, Science Lab Supplies is a registered exporter that can ship to buyers in Saudi Arabia, Oman, the Philippines, Nepal, Bangladesh and Zambia. Tell us the spindle taper, bracket length and thread hand on the contact page, list several sets in the enquiry cart, or use the lab tender page for tender quoting.
Frequently Asked Questions
What comes in a full set?
A full set has the arbor with bearing bushes, spacers, a nut and keys, so cutters can be positioned along the shaft and the outer end supported in the machine brackets.
Which taper should I order?
Choose the taper from your machine's spindle specification. The arbors come in size 30, 40 and 50 tapers, and BT and Morse tapers are also available.
Who supplies the Long Milling Arbors?
They are a supplied line from Science Lab Supplies in Ambala, India. Each set is matched to the taper and length a machine needs before it is quoted to training institutes, colleges or workshop contractors.
Related Milling Equipment and CNC Mills
Long arbors are used on horizontal and universal milling machines, and can be combined with a dividing head for gear work and a cutter grinder for resharpening. These items complete that milling setup and add CNC mills for programmed work, and they can be quoted together with the arbors.
- Milling Arbor — application-based arbor weighing about 3 to 5 kg.
- Universal Dividing Head — spindle bores of 20, 32 or 38 mm, depending on size.
- Tilting and Swiveling Vice — tenon slots of 13 to 20 mm locate it on the machine table.
- Universal Tool and Cutter Grinder — holds jobs up to 25 kg between centres or 15 kg in the chuck.
- CNC Milling Machine Floor Model — 1 kW spindle motor and 0.015 mm positioning precision.
- 8 Directional Vertical Milling — X, Y and Z travels of 229, 178 and 137 mm.
Browse the full Metal Manufacturing Training Machine range, the CNC Trainer Machine range, the Theory of Machine Lab Equipments range, or all TVET lab equipment.
Last updated: 9 October 2026
