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Pneumatic Non-Shift Wedge Grip 10-20 kN
Pneumatic wedge grip whose jaws move horizontally only, keeping axial preload low on ceramics and brittle specimens; 10 kN standard, 20 kN version.
Brand: Universal Grip | Model: UGC-PG-170 | ● Configured to order
Jaws move horizontally only, so the pin-to-jaw distance stays constant
Minimal axial load on the specimen during clamping
22 kN (about 4,950 lbf) clamping at 7 bar; 40 kN at 15 bar
10 kN (about 2,250 lbf) tensile load standard; 20 kN version available
Pyramid, V and diamond jaws, 33 x 40 mm, openings to 16 mm
Pull-rod version for chambers; 20 kN version rated -70 to +280 °C
Standards: ASTM E8 · ISO 6892-1
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A wedge grip that clamps without pulling on the specimen
In many wedge grips the jaws travel along the wedge as they close, and that motion can pull on the specimen before the test has started. For a ductile metal strip the effect is small. For technical ceramics or brittle composites, an unintended preload can crack or pre-stress the specimen before the first data point. The UGC-PG-170 is designed to avoid this.
How the non-shift design works
The jaws move horizontally only. The distance between the coupling pin and the jaws stays constant during clamping, so the gauge position does not shift and the axial load on the specimen stays minimal. Clamping is pneumatic: the standard grip develops 22 kN of clamping force at 7 bar (about 4,950 lbf at roughly 102 psi) and 40 kN at 15 bar (about 8,990 lbf at 218 psi), and it carries a tensile load of 10 kN (about 2,250 lbf).
Versions
10 kN standard: 22 kN clamping at 7 bar, 0 to +70 °C
10 kN with pull rods: for use in temperature chambers
20 kN high temperature: -70 to +280 °C, male clevis with Ø 25 mm pin hole
The body is nickel-plated steel, with stainless steel also listed, and each grip weighs 9.7 kg (about 21.4 lb) without jaws.
Jaws
All jaws have a 33 x 40 mm face, and the 0–16 mm total opening is covered in three ranges:
Pyramid jaws for openings of 0–6, 6–12 or 10–16 mm
V-jaws for round specimens Ø 2–6 or 6–12 mm
Diamond jaws for openings of 0–6 mm
Applications and machine fit
Besides technical ceramics and brittle composites, the grip handles wires and round bars as well as flat metal and plastic specimens. Standard couplings are a female clevis for a Ø 15.9 mm (5/8 in) or Ø 20 mm pin, with others on request. Given the grip mass and the 10–20 kN tensile range, it pairs with Galdabini 25 kN and 50 kN benchtop universal testing machines or a floor-standing UTM. For temperature work, combine the pull-rod or high-temperature version with one of our environmental chambers. Foot pedals and hand switches are on the pneumatic grip accessories page.
Tell us the tensile capacity, coupling, temperature range and jaw opening you need, and we will configure the grips. Request a quote.
Operating pneumatic grips with foot pedals
At a glance
Max. tensile load: 10 kN (20 kN version available)
Clamping force: 22 kN at 7 bar; 40 kN at 15 bar
Jaw opening: 0–16 mm in three ranges, depending on jaws
Jaw face size: 33 x 40 mm
Coupling: Female clevis Ø 15.9 mm (5/8 in) or Ø 20 mm pin; others on request
Body material: Steel, nickel-plated; stainless steel
Pneumatic Non-Shift Wedge Grip 10-20 kN Specifications
MAX. TENSILE LOAD
10 kN (20 kN version available)
CLAMPING FORCE
22 kN at 7 bar; 40 kN at 15 bar
JAW OPENING
0–16 mm in three ranges, depending on jaws
JAW FACE SIZE
33 x 40 mm
COUPLING
Female clevis Ø 15.9 mm (5/8 in) or Ø 20 mm pin; others on request
BODY MATERIAL
Steel, nickel-plated; stainless steel
TEMPERATURE RANGE
0 to +70 °C; other ranges on request
WEIGHT
9.7 kg per grip, without jaws
OPERATION
Pneumatic
PART REF.
UGC-PG-170
Models & Options
Name — Description (Part #)
10 kN standard — 22 kN clamping at 7 bar, 0 to +70 °C (Specify at order)
10 kN with pull rods — For use in temperature chambers (Specify at order)
20 kN high temperature — 40 kN clamping at 7 bar, -70 to +280 °C, male clevis Ø 25 mm pin hole (On request)
Pyramid jaws 33 x 40 mm — Openings 0–6, 6–12 or 10–16 mm (Specify at order)
V-jaws — Round specimens Ø 2–6 or 6–12 mm (Specify at order)
Diamond jaws 33 x 40 mm — Opening 0–6 mm (Specify at order)
What's Included
A pair of pneumatic non-shift wedge grips in the capacity and version ordered
Pull rods come with the temperature-chamber version only
Jaws are ordered separately for your opening range
Foot pedals or hand switches are ordered separately
Supported Test Standards
ASTM E8 — Tension testing of metallic materials
ISO 6892-1 — Tensile testing of metallic materials at room temperature
Compatible Grips & Fixtures
Pneumatic Grip Accessories and Foot Switches — Foot pedals and hand switches
25 kN benchtop UTM — Galdabini benchtop machine
50 kN benchtop UTM — Galdabini machine with headroom for the 20 kN version
Floor-standing UTMs — Higher-capacity frames
Environmental chambers — For the pull-rod and high-temperature versions
Metals testing — Wire, bar and flat metal specimens
“Customer quote”
Related Equipment
UGC-PG-160 Small Lightweight Pneumatic Grip 100 N
240 g single-rod pneumatic grip: 200 N clamping at 7 bar, rated 100 N tensile, with jaws from 25 x 25 mm to 25 x 100 mm.
UGC-PG-180 Symmetric Pneumatic Grip for Bitumen Sheet
Two-rod pneumatic grip with water-cooled insert jaw carriers for bitumen roofing membranes; 7 kN clamping at 7 bar, 16 k
UGC-PG-150 Pneumatic Grips with 1 or 2 Rods 1.2 kN
Lightweight 1.2 kN pneumatic grips with one or two rods, supplied with carriers for quick-change insert jaws; 0.56 kg pe
UGC-PG-190 Symmetric Pneumatic Grip 5 kN
Pneumatic grip whose jaws close symmetrically about the test axis: 5 kN max. load, 3.5 kN clamping at 7 bar, specimens 0
Pneumatic Non-Shift Wedge Grip 10-20 kN FAQ
What does "non-shift" mean?
The jaws move horizontally only, so the distance between the coupling pin and the jaws stays constant during clamping and the specimen sees minimal axial load before the test starts.
Why use it for ceramics?
Brittle materials such as technical ceramics can be pre-loaded or damaged by jaw travel during clamping. Horizontal-only jaw motion keeps that preload low.
What capacity is it rated for?
The standard grip carries a 10 kN tensile load with 22 kN clamping at 7 bar. A 20 kN version rated -70 to +280 °C is available on request.
What jaw openings are available?
Pyramid jaws cover 0–6, 6–12 and 10–16 mm; V-jaws take round specimens Ø 2–6 or 6–12 mm; diamond jaws cover 0–6 mm. All faces are 33 x 40 mm.
Is there a version for temperature testing?
Yes. Order the version with pull rods for chamber use, and see our environmental chambers.
How heavy are the grips?
9.7 kg per grip without jaws, so allow for that mass when you choose the load cell and machine.