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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 kN at 16 bar.
Brand: Universal Grip | Model: UGC-PG-180 | ● Configured to order
Two pneumatic rods: 7 kN (about 1,575 lbf) at 7 bar, 16 kN at 16 bar
Insert jaw carriers with two ports for a water cooling circuit
Special wave insert jaws for soft bituminous specimens
Quick-change 65 x 70 mm insert faces; opening 0–14 mm
Large-opening pyramid jaws to 42 mm with special piston rods
Anodized aluminum body, 4.5 kg per grip without jaws
Standards: ASTM D4073 · ASTM D5147
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Pneumatic grips for bitumen sheeting and roofing membranes
Bituminous roofing membranes soften as they warm, and a soft specimen tends to creep out of ordinary jaws during a tensile test. The UGC-PG-180 is a two-rod pneumatic grip built for this material. Its insert jaw carriers have ports for a water cooling circuit, so chilled jaws hold soft bituminous specimens without slipping. It is used for tensile tests on bitumen sheeting and roofing felt such as ASTM D4073 and ASTM D5147, and it also handles waterproofing sheets and soft polymer sheet.
How it works
Two pneumatic rods close the jaws with 7 kN of clamping force at 7 bar (about 1,575 lbf at roughly 102 psi), rising to 16 kN at 16 bar (about 3,600 lbf at 232 psi). Air connects through a 1/8 in port. Each insert jaw carrier has two cooling ports that connect to a circulator, which is quoted separately. The body is anodized aluminum for low weight and corrosion resistance, and each grip weighs 4.5 kg (about 9.9 lb) without jaws.
Insert jaws
All faces are quick-change 65 x 70 mm inserts that mount on the carrier set:
Special wave insert jaws for bitumen, opening 0–14 mm
Smooth insert jaws, opening 0–14 mm
Rubber-faced insert jaws, opening 0–12 mm
Pyramid insert jaws, opening 0–14 mm
Large-opening pyramid jaws, 0–42 mm, supplied with special piston rods
Setting up a bitumen test
For bitumen work, order the carrier set together with the special wave inserts and connect the carriers to a cooling circulator. Because the same carriers take smooth, rubber-faced and pyramid inserts, the grips can also be used on other sheet materials without changing the grip body. For thick or layered membranes, the large-opening pyramid jaws extend the opening to 42 mm.
Machine fit
The coupling is a female clevis for a Ø 15.9 mm (5/8 in) pin, with other couplings and adapters on request. The 7–16 kN clamping range suits Galdabini 10 kN and 25 kN benchtop universal testing machines. The rated temperature range is 0 to +70 °C. Foot pedals and hand switches are on the pneumatic grip accessories page, and a compressor can be included in the quote.
Tell us your membrane type, test method and machine coupling, and we will put together grips, carriers, inserts and cooling. Request a quote.
Symmetric Pneumatic Grip for Bitumen Sheet Specifications
CLAMPING FORCE
7 kN at 7 bar; 16 kN at 16 bar
TEST TYPE
Tension
PNEUMATIC RODS
Two
JAW OPENING
0–14 mm, depending on jaws
JAW FACE SIZE
65 x 70 mm insert jaws
COUPLING
Female clevis, Ø 15.9 mm (5/8 in) pin; others on request
PNEUMATIC CONNECTION
1/8 in
BODY MATERIAL
Anodized aluminum
TEMPERATURE RANGE
0 to +70 °C
WEIGHT
4.5 kg per grip, without jaws
PART REF.
UGC-PG-180
Models & Options
Name — Description (Part #)
Wave insert jaws — Special wave faces for bitumen, 65 x 70 mm, 0–14 mm (Specify at order)
Smooth insert jaws — 65 x 70 mm, 0–14 mm (Specify at order)
Rubber-faced insert jaws — 65 x 70 mm, 0–12 mm (Specify at order)
Pyramid insert jaws — 65 x 70 mm, 0–14 mm (Specify at order)
Pyramid jaws, large opening — 65 x 70 mm, 0–42 mm, with special piston rods (Specify at order)
Carrier set — Required for insert jaws, with cooling ports (Specify at order)
Cooling circulator — Water circulation for the jaw carriers (On request)
What's Included
A pair of two-rod pneumatic grips
Carrier set with cooling ports, required for insert jaws, specified with the order
Insert jaws are ordered separately
Cooling circulator is not included; available as an option
Foot pedals, hand switches or compressor are optional
Supported Test Standards
ASTM D4073 — Tensile-tear strength of bituminous roofing membranes
ASTM D5147 — Sampling and testing modified bituminous sheet material
Compatible Grips & Fixtures
Pneumatic Grip Accessories and Foot Switches — Foot pedals and hand switches
10 kN benchtop UTM — Galdabini benchtop machine
25 kN benchtop UTM — Galdabini machine for higher-strength membranes
Tear testing — Tear test setups for sheet materials
Adapters — Couplings for other machine connections
“Customer quote”
Related Equipment
UGC-PG-170 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
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
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-200 Wide Pneumatic Grip with Pyramid Jaws
Three-rod pneumatic vise grip with 60 x 220 mm hardened jaws and 7.8 kN clamping at 7 bar for textiles, webbing, geotext
Symmetric Pneumatic Grip for Bitumen Sheet FAQ
Why are the jaw carriers water-cooled?
Bitumen softens with temperature. Cooling the carriers lets chilled jaws hold soft bituminous specimens without slipping.
Is the cooling circulator included?
No. Each carrier has two cooling ports; the circulator is quoted separately.
Which tests is the UGC-PG-180 used for?
Tensile tests on bitumen sheeting and roofing felt such as ASTM D4073 and ASTM D5147, plus waterproofing sheets and soft polymer sheet.
What clamping force does it give?
7 kN at 7 bar, rising to 16 kN at 16 bar.
What jaw opening is available?
0–14 mm with standard inserts (0–12 mm with rubber-faced inserts), or 0–42 mm with the large-opening pyramid jaws and special piston rods.
Does it need a different grip for other sheet materials?
No. The same carriers take smooth, rubber-faced and pyramid inserts, so you only change the insert faces.