INTBUYING® | 90° Angle Head CNC Milling – Technical Documentation
90° Angle Head CNC Milling Attachment
CAT40 · ER32 · 1:1 Gear Ratio · 5000 RPM · 40 Nm · 4 kW · INTBUYING®
90° Angle Head CNC Milling Attachment main view

Product Overview

The AG90-CAT40-ER32-60 Fixed 90° Angle Head is a precision CNC milling attachment designed to convert vertical machining center spindle rotation into horizontal-side cutting capability, enabling machining of workpiece sides, grooves, slots, and complex profiles without repositioning the part. Built with an aerospace-grade aluminum alloy housing and 20CrMnTi alloy steel drive shafts, this angle head delivers 4KW of cutting power at 5000 RPM with a maximum torque of 40Nm, making it suitable for face milling, slotting, drilling, and light roughing operations on steel, aluminum, and cast iron workpieces.

Featuring a CAT40 spindle taper input with standard pull stud, the angle head mounts directly onto any CAT40-equipped VMC in seconds using the machine's automatic tool changer or manual insertion. The 1:1 direct gear drive transmits full spindle power to the ER32 collet output, accepting tools from 2mm to 20mm diameter. The angle body can be rotated and locked in 1° increments from 0° to 90° via the positioning ring and locking bolt system, allowing cutting at any angle along the vertical-to-horizontal arc. Grease-lubricated spiral bevel gears ensure quiet, smooth power transmission with minimal maintenance requirements.

Product Parameters

ModelAG90-CAT40-ER32-60
Spindle Taper (Input)CAT40 (ISO/DIN 69871)
Collet Type (Output)ER32 (Capacity 2-20 mm / 0.08-0.79 in)
Angle90° Fixed (0-90° Adjustable Body Rotation)
Max. Speed5000 r/min
Max. Torque40 Nm (29.5 lbf·ft)
Max. Power4 kW (5.36 HP)
Gear Ratio1:1 Direct Drive
Rotation DirectionL-R (Left/Right Reversible)
Housing MaterialAerospace Aluminum Alloy
Shaft Material20CrMnTi Alloy Steel (Carburized)
LubricationGrease Lubrication (Long Life)
Net Weight / Gross Weight8.2 kg (18.1 lb) / 11.9 kg (26.2 lb)
Package Dimensions45 × 37 × 28 cm (17.7 × 14.6 × 11.0 in)

Product Features

Aerospace Aluminum Housing

Aerospace Aluminum Housing

Precision-machined aluminum alloy housing delivers excellent strength-to-weight ratio. Lightweight at 8.2 kg while maintaining rigidity under 40Nm cutting loads.

0-90° Adjustable Body

0-90° Adjustable Body

Body rotates and locks at any angle from 0° to 90° in 1° increments. Positioning ring with locking bolt and anti-rotation stop bar ensures stable cutting.

CAT40 Precision Taper

CAT40 Precision Taper

Ground CAT40 taper (ISO/DIN 69871) with pre-installed pull stud. ATC-compatible for automatic tool changes. AT3 accuracy class with runout < 0.005mm.

ER32 Collet Output

ER32 Collet Output

Accepts 2-20mm tools with 1:1 direct drive. Ball-bearing collet nut reduces tightening torque by 30% for faster tool changes.

Grease-Lubricated Gearbox

Grease-Lubricated Gearbox

Precision-ground spiral bevel gears in sealed housing. Grease-packed for consistent lubrication without oil lines or regular relubrication.

ATC-Compatible Mounting

ATC-Compatible Mounting

Mounts directly onto VMC spindle like a standard tool. Stored in tool magazine and called up automatically through ATC cycle. No special brackets or manual alignment required.

Product Advantages

  • Aerospace Aluminum Housing: Lightweight yet rigid, 8.2kg total weight.
  • 20CrMnTi Alloy Shafts: Carburized steel for superior wear resistance.
  • 0-90° Adjustable: Body rotates and locks at any angle increment.
  • ER32 Collet: Accepts 2-20mm tools with 1:1 direct drive.
  • Grease Lubricated: Sealed gearbox, no external lubrication needed.
  • 40Nm / 4KW: Heavy-duty cutting capacity for steel and aluminum.
  • ATC Compatible: Mounts through automatic tool changer like standard tool.

Operation Method

  • 1. Installation onto Spindle: Clean the CAT40 taper on the angle head and the machine spindle bore. Insert the angle head into the spindle until the taper seats fully. Engage the drawbar to secure the pull stud. Verify that the angle head is firmly seated by gently attempting to rotate it by hand.
  • 2. Angle Adjustment: Loosen the positioning ring locking bolt. Rotate the angle body to the desired cutting angle (0° to 90°) using the engraved scale as reference. Tighten the locking bolt securely. Install the anti-rotation stop bar against the positioning ring to prevent movement during cutting.
  • 3. Tool Installation: Insert an ER32 collet of the appropriate size into the output spindle. Install the cutting tool into the collet. Thread the collet nut onto the spindle and tighten using the provided spanner wrench. Verify the tool protrusion is adequate for the intended cutting depth.
  • 4. Programming: Set the CNC program to use the angle head tool number. Program standard XY feed moves for side-wall machining. The Z-axis controls depth of cut. Use conservative feed rates (50-70% of normal) for the first operation. Adjust speeds and feeds based on tool manufacturer recommendations and material being cut.
  • 5. Operation: Start the spindle at the programmed RPM (do not exceed 5000 r/min). Engage the workpiece with a shallow initial cut (0.5-1mm). Monitor cutting sound and chip formation. Adjust feed override as needed. For slotting operations, use conventional milling (climb milling not recommended for deep slots).
  • 6. Removal and Storage: Stop the spindle. Retract to safe Z-height. Release the drawbar and remove the angle head. Clean coolant and chips from the housing. Store in the tool magazine or on a padded rack. Apply a light coat of rust preventive oil to exposed steel surfaces.

Safety Precautions

WARNING: This is a precision CNC cutting tool. Improper use can cause tool breakage, workpiece damage, or personal injury.
  • 1. Speed Limit: Do not exceed 5000 r/min. Exceeding the rated speed can cause bearing failure, gear damage, or tool ejection. Always verify the programmed RPM before cycle start.
  • 2. Torque Limit: Maximum cutting torque is 40Nm. Do not take depths of cut that overload the gears. Use conservative feeds for materials harder than HRC30. Listen for gear distress sounds (chattering, grinding) and reduce load immediately if detected.
  • 3. Secure Mounting: Verify the CAT40 taper is fully seated and the drawbar is engaged before every operation. A loose angle head can drop from the spindle, causing severe damage and injury.
  • 4. Angle Lock: Always tighten the positioning ring locking bolt and install the anti-rotation stop bar before cutting. A loose angle body can rotate under cutting force, destroying the workpiece and tool.
  • 5. Chip Clearance: The angle head extends significantly from the spindle face. Verify adequate clearance to fixtures, workpiece clamping, and machine enclosure before rapid positioning moves. Program a safe Z-height for all non-cutting moves.
  • 6. Coolant: Flood coolant is recommended for steel and stainless steel cutting. The sealed gearbox is protected against coolant spray, but avoid directing high-pressure coolant streams directly at the gearbox seals.
  • 7. Tool Balance: Use balanced collets and tools. Unbalanced tools at high RPM cause vibration that damages bearings and produces poor surface finish. Check tool protrusion does not exceed 4x diameter.
  • 8. Inspection: Before each use, inspect the angle head for cracks, loose fasteners, or abnormal wear. Check the CAT40 taper for nicks or scoring. Do not use if damage is found.
  • 9. Training: This tool is for trained CNC machinists only. Operators must understand CNC programming, cutting parameters, and machine safety before using this angle head.
  • 10. Maintenance: The gearbox is sealed and pre-lubricated. Do not attempt to open the gearbox. If lubrication service is required, contact an authorized service center.

Product Dimensions

Product dimensions diagram

Item Included (057125)

CAT40 ER32 90° Angle Head Main Unit × 1

Shipping & Handling Details

Default Shipping Cost or Free Shipping Information:
Default shipping cost or free shipping service is only for the customers from Canada or the lower 48 United States by Canada Post, USPS or the UPS Ground. Customers from other areas or needs other shipping ways, please contact us.

▲ Buyers from Guam, Puerto Rico, Virgin Islands, American Samoa, Alaska, Hawaii, PO Boxes, APO/FPO addresses or other countries/areas — there WILL be extra shipping costs, please contact us for more detailed information.

▲ Please make sure your address is valid for both UPS and USPS services. Any costs incurred because of incorrect or undeliverable address should be undertaken by buyer.

Handling Time: Shipping is usually made in 1-3 business days after payments cleared. Orders are processed from Monday-Friday; Not on the weekends & public holidays.

Sales tax / Customs duties: Any sales taxes or Customs duties are not included. If came out, they must be undertaken by the buyer.

Damage In Shipping: Email or call us First! We will work with you to get the case resolved in the fastest method.

Return / Refund

If you are not 100% happy with your purchase, please contact Us. Please don't directly opened a request or case without informing us, or else, we will do some discounts on the warranty and other sales-services later on. Hope for your understanding.

Returns & Exchanges

  • All returns must be made within 14 days of delivery date. Items must be in new, unused condition, with all original materials included with the shipment. A partial refund may be applied for opened or damaged items, depending on the condition.
  • Items returned under the buyer's remorse: The return shipping fee must be covered by the buyer; The original shipping cost will also be deducted from the refund. 15% restocking fee of the items purchase price will be charged.
  • Returns that are the result of our seller's error: Buyer will receive a full refund of the item as well as shipping charges.
  • All returns require a RA (Return Authorization) number that will be given by our seller. Please contact with us at first for more details.

Defective & Damaged Products

  • If product was received damaged or not as described, please send us some pictures or videos, so we could well understand your problem, then solve them for you ASAP. Besides, it's much helpful for us to claim with UPS, remind our related department to pay much more attention to packaging later on. Hope for your understanding.
  • Replacement or refund of defective or damaged products can only be returned in exchange for the exact same product, or else, the purchase price will be refunded back to your original payment method.
  • If an item is received damaged, customer service must be contacted within 7 days of receiving your item. All returns require a RA (Return Authorization) number as above.

Payment

eCheck Issues: Payments via eCheck do not clear immediately. Usually you will wait 5-7 days after checkout for it to clear. Then we will arrange shipments for you.

Warranty & Feedback

  • 6 months' warranty for the machines, not for the consumables. We stand behind our products all the item, so even if your warranty period has expired, you can still seek for service or technical support from us with low cost.
  • Any warranty shipping cost to us is responsible by buyer.
  • Any shipping cost to buyer is responsible by the seller.
  • We committee to the customer satisfaction and want to bring you the best purchase experience. If there is any problems, please contact us ASAP. If not, please leave us a positive feedback as it's very important for us. Thanks very much.
INTBUYING® — CNC Tooling & Accessories | 90° Angle Head & Right Angle Milling Attachment
CAT40 · ER32 · 1:1 Gear Ratio · 5000 RPM · 40 Nm · 4 kW · ATC Compatible


On Jul 12, 2026 at 23:26:16 PDT, seller added the following information:

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