Products >> Workholding >> Unilock
UNILOCK: ZERO POINT CLAMPING SYSTEM
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UNILOCK utilizes spring pressure to drive wedges against a tapered wedge lock (clamping knob). Air pressure is used to compress the springs, releasing the wedge lock. Clamping is achieved by bleeding the air pressure out of the chuck. To facilitate palletization, the clamping knob is attached to a base plate, fixture or directly to a workpiece. The result is quick and repeatable clamping.
A product of: 
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UNILOCK Specifics:
- Clamping Mechanism: Heavy-duty die springs
- Chuck Opening: Air pressure compresses springs
- Clamping Stability: Low profile with matching taper wedges
- Positional Accuracy: Adaptable to workpiece conformation
- Unlocking Air Pressure: 75 PSI
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ASM 120
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Features:
- Integrated toe clamp lip
- Reduced diameter for small work or tight spaces
- Jig ground reference pin location on bottom of chuck
- Air supply from bottom or side of chuck
- Optional reference pin hole in face of chuck
- Non-air mechanical version available
Click here for Technical Drawings
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The manual version comes with a
handle for easy opening and closing. |
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ESM 138
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EFM 138 |
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Features:
- Reduced diameter for small work or tight spaces
- Turbo option for increasing holding power
- Air supply from bottom or side of chuck
- Optional reference notch in face of chuck
Click here for Technical Drawings
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The flange version reduces projection height and is easily mounted in
thinner walled tombstones. |
Chucks for Your Smaller Applications
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Zero Point Chuck ASM 90
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Features:
- Reduced diameter for small work or tight spaces
- Integrated toe clamp lip
- Turbo option for increasing holding power
- Air supply from bottom or side of chuck
- Optional reference notch in face of chuck
Click here for Technical Drawings
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Zero Point Chuck ESM 100/75
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Features:
- Flange mounting design
- Reduced size for small work or tight spaces
- High clamping force in a small package
- Edge of chuck can be used as a timing surface
- Turbo option for increased holding power
Click here for Technical Drawings
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Larger More Robust Chucks
MSM 170
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Features:
- Large diameter, heavy duty mechanical clamping
- Clamping lip for topside table clamping
- Threaded holes for bottom side clamping to plates
- Integrated timing notch locations every 90 degrees
- Air supply from bottom or side of chuck
Click here for Technical Drawings
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ESM 176 Turbo
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Features:
- Flange design for topside mounting
- Large diameter with turbo-clamping for more rigidity
- Air supply from bottom or side of chuck
- Optional reference notch in face of chuck
Click here for Technical Drawings
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Optional reference notch chuck |
HSM 196
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Features:
- Large Diameter
- Turbo Feature for more rigidity
- Flange design for topside mounting
- Air ports on bottom and side
- 3 clamping rams for more stable clamping
- ø61mm access hole
- 2240 lb-f (10,000 N) pull down force
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Optional reference notch
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Single Table Chucks
MCM 150
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The MCM 150 is prepared to accept 4 hardened 12mm index
bushings, one every 90 degrees. Order 1 index bushing to orient a
pallet with a single knob. If you need to execute multiple 90 degree
indexes, additional bushings can be installed.
Click here for Technical Drawings
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MLM 150
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Features:
- Base plate for mounting on machine tables
- Air supply from side of base plate
- 4 x 90 degree indexing on MCM version
- Optional timing notch in face of MLM chuck
- Key ways on bottom for positioning on work table
Click here for Technical Drawings
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For applications where a timing pin is
required, the MLM series of chucks can be ordered with a timing pin notch integrated into the face of the UNILOCK chuck.
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Double Table Chucks
DCM 200
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Features:
- Base plate for mounting on machine tables
- Air supply from side of base plate
- 4 x 90 degree indexing on DCM version
- Optional timing notch in face of DLM chuck
- Key ways on bottom for positioning on work table
Click here for Technical Drawings
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DLM 200
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The DLM 200 chuck does not have timing pin bushing
locations. If you want to orient a double pallet with
this chuck, add one timing pin notch. If you need to run 2 single pallets add a timing notch for each chuck.
Click here for Technical Drawings
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Optional 14mm timing notch on DLM 200 chuck
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Automation Chucks
ESA 110
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The ESA 110 automation chuck can be used as a single or multiple chuck solution. Pallets seal off air passages allowing for the verification of a pallet through back pressure monitoring.
Features:
- Tapered chuck eases cleaning
- Air assisted clamping option
- Air blast cleaning passages
- Air verification of pallet presence
- Four elevated support pads
Click here for Technical Drawings
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| NSA 125
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The NSA 125 automation chuck can be used as a single or multiple chuck solution. Pallets seal off air passages allowing for the verification of a pallet through back pressure monitoring.
Features:
- Tapered chuck eases cleaning
- Air assisted clamping options
- Air blast cleaning passages
- Air verification of pallet presence
- Two elevated support pads
Click here for Technical Drawings
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| ESA 185
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The ESA 185 chuck is the largest self cleaning Unilock clamping chuck. It is especially well suited for the use in heavy machining. Supporting pallets up to 1000mm x 1000mm with weight in excess of 10 tons, this chuck offers rigid clamping for turning and milling. After the blow-off function cleans the chuck during a load cycle, it can be used to monitor pallet presence.
Features:
- Tapered chuck eases cleaning
- Air assisted clamping options
- Air blast cleaning passages
- Air verification of pallet presence
- Two elevated support pads
Click here for Technical Drawings
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| ASSF 170
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This automation chuck is produced from a steel body with dimensions of 170mm x 170mm. It is designed to accept a single clamping ring at centerline of the pallet. A stable platform is provided for all machining applications through the use of four clamping wedges and four supporting orientation pads.
Click here for Technical Drawings
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| ASSF 250
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This automation chuck is produced from a steel body with dimensions of 250mm x 250mm. It is designed to accept a single clamping ring at centerline of the pallet. A stable platform is provided for all machining applications through the use of four clamping wedges and four supporting orientation pads. This chuck supports a passage for delivering compressed air to the top side of the fixture plate.
Click here for Technical Drawings
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Multi Axis
5-AXIS Duo Bridge
Dual 45° 105/65 Base Plates
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This base plate can be mounted directly to the top of a 5-axis table or loaded through a pair of Unilock zero-point chucks. Two elevated Unilock chucks are mounted at 90 degrees to each other so one is out of the way while the other is being machined. Each cycle, two parts can be completed. Special base plates can be designed and manufactured, so there is no limit to the machine table configurations that can be supported by this solution.
Features:
- Process two workpieces at a time without interference
- Turbo option provides over 2,000 lbs of clamping force
- Two timing notches provide increased rigidity
- Timing pins can also locate off the sides of the chuck
- Plumbing is integrated into the bottom of the base plate
Click here for Technical Drawings
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| First Grip
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First Grip is a minimally intrusive clamping solution for 1st operations using raw bar or plate stock. Designed to bite into raw material, First Grip leaves an impression that in most cases will be machined away in a subsequent operation. First Grip can be used in a single jaw configuration or it can be used in series to hold larger workpieces. The fixed jaw can be removed allowing for unlimited workpiece sizes and shapes. For special fixture designs, dowel pin locations are provided to accurately position First Grip where you need it.
Features:
- No preparatory machining of workpieces is required
- Can be used in series for wide workpieces
- Available in two widths: 34mm and 50mm
- Unilock adapter plates are available
Click here for Technical Drawings
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| Dovetail Grip
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Dovetail Grip is a universally adjustable clamping system where workpiece size is only limited by the length of the be positioned anywhere on your machine table through the use of multiple bases that supports dowel pin position for 40mm and 50mm grid plates. The top of the bases are serrated allowing each jaw to be locked into the baseplate in 1.5mm increments.
Multiple jaw sets can be used on the same workpiece and the dovetail does not have to be cut to a specific size. The 78.9mm opening limit is only applicable when both jaws are attached to a single serrated base. Longer bases are available on request; however there is more system flexibility when multiple short bases are used. The serrated bases also support a vise jaw solution.
Features:
- Specific dovetail sizes are not required
- Infinitely adjustable when two base rails are used
- Can be used in sets to hold irregular shapes
- Conventional style vise jaws are available
- Multiple base rail lengths available
Click here for Technical Drawings
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| 5-Axis Riser Chucks
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Unilock riser chucks have a working diameter of 80mm. They are available on base plates or as stacking modules in heights of 75mm and 100mm. Base plate chucks have 12mm dowel pin holes that locate chucks on 40mm and 50mm grid patterns. Base chucks can also have clamping knobs attached for use in other Unilock chucks or the stacking version can be used for elevation and clearance. All chucks open and close quickly with a single hex key.
The chucks are all capable of clamping any Unilock 40mm knob. By using a riser assembly, workpieces allow the clamping knob to be anchored 25mm from diameter from 80mm to 50mm and add an additional elevation of 25mm or 50mm.
Click here for Technical Drawings
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Electrostatic Discharge Machining
EDM 100/150
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Features:
- Thin Profile = 39mm
- Turbo
- Multiple mounting surfaces
- Optional air block supplies air to pallet
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UNILOCK Pneumatics Kits
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Kits Include:
- BSP & NPT fittings
- 10 feet of tubing
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Mount Knobs to Your Pallets and Workpieces
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UNILOCK clamping knobs can be attached to fixtures or directly to
workpieces. Our standard knobs can be mounted in a blind hole
from the bottom or pulled up from the top.
Standard clamping knobs have a metric positioning boss
which is ø25mm in diameter and ground to a fit of h6 tolerance. This
boss is 5mm tall. The overall measurements of the clamping
knob is ø40mm by 40mm tall.
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Standard clamping
knobs accept the following:
1. M12 set screw - The set screw is threaded into the
clamping knob and also the workpiece or fixture.
2. M10 cap screw - The screw passes through the clamping
knob and threads into the workpiece or fixture.
3. M12 cap screw - The cap screw passes through the part
or fixture and pulls the clamping knob up into position.
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The A Knob is ground to fit with the center ground
taper of the chuck. This fit establishes centerline
location. This location will repeat to better than
± .0001 inches.
The B Knob is ground like a diamond pin and orients
your work relative to the centerline of the SBA knob.
The C Knob is ground undersize to provide downward clamping only. It will bring the
bottom of the workpiece or fixture down on the top
of the UNILOCK chuck. Additional clearance sizes available. |
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UNILOCK Workholding Applications in Action
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