Low Profile HEx type Hydraulic Torque Wrench
BOLTORQ LOW Series Direct Hex Drive Hydraulic Torque Wrenches are designed for extreme low spaces where normal tools cannot reach. The light weight and compact hydraulic cylinder is made of special Aircraft Grade Aluminum Alloy and the internal spares are made of high Nickel Alloy Steel. There are 5 Models in the LOW Series ranging from 230 to 45,000 Nm. All models have a small nose radius which allows the tool to fit in such areas where space constraint is observed.
BOLTORQ 2 LOW DIRECT HEX DRIVE HYDRAULIC WRENCH
Built for ultra-tight spaces and narrow nose radii where standard square drive tools cannot fit.
TORQUE RANGEBOLTORQ 4 LOW INTERCHANGEABLE HEX WRENCH
The definitive refinery turnaround tool with multiple hex cassette options ranging from 34mm to 80mm.
BOLTORQ 8 LOW LOW-PROFILE HYDRAULIC TORQUE WRENCH
Engineered for heavy industrial flanges and restricted bolt spacings requiring high repeatability and durability.
BOLTORQ 14 LOW HIGH-CAPACITY HEX WRENCH
Heavy-duty low-profile power tool featuring an advanced slim cylinder design and fine-toothed ratchet pawl.
BOLTORQ 30 LOW MAXIMUM-CAPACITY HEX WRENCH
Boltorq’s flagship low-profile torque tool, built for extreme industrial applications up to 175mm nut sizes.
HEX DRIVE TORQUE WRENCH
Every Boltorq hex drive torque wrench is engineered for confined-access bolting—combining compact geometry, high torque output, and controlled hydraulic operation. Its direct hex-drive design delivers precise torque application where conventional square-drive tools cannot fit.
| TYPE | Torque (N.m) | Nut Sizes (Mm) | Power Head Weight (Kg) | Cassette Weight (Kg) | L1 | L2 | H1 | H2 | W1 | W2 |
| 2 LOW | 232–2328 241–2414 | 19–55 60 | 1 1 | 1.6 1.7 | 195.4 | 186 | 125.9 128.5 | 102.3 105 | 32 | 51 |
| 4 LOW | 585–2510 to 647–6474 | 34–80 | 2 | 4.4 – 4.6 | 261.6 | 245 | 177 – 187 | 135.7 – 145.7 | 42 | 66 |
| 8 LOW | 1084–10941 1177–11774 | 41–95 | 3.3 | 8 | 304 | 300 | 207 | 169 | 53 | 83 |
| 14 LOW | 1852–18521 | 50–117 | 5.5 | 11.6 | 361 | 361 | 239 | 204 | 64 | 99 |
| 30 LOW | 4188–41882 4459–44593 | 110–155 160–175 | 11.4 | 29 – 30 | 441 | 430 | 303 – 315 | 272 – 285 | 85 | 131 |
ENGINEERED FOR THE NARROWEST GAPS.
Boltorq’s LOW series hydraulic torque wrenches incorporate advanced metallurgical and mechanical features designed to maximize tool life and eliminate backlash:
Aircraft-Grade Cylinder
Lightweight specialized aluminum alloy cylinder body built for extreme cyclic pressure.
First-Stroke Rod Engagement
Ensures the piston rod engages immediately on the first stroke, eliminating mechanical backlash.
Fine-Toothed Ratchet & Pawl
Delivers superior gear engagement and smooth torquing cycles in cramped spaces.
Torsion-Free Reaction Pad
Absorbs reaction forces safely without placing side-load stress on internal components.
360° x 180° Swivel Manifold
Leak-proof multi-directional hydraulic hose rotation for maximum maneuverability.
TRUSTED ACROSS
GLOBAL REFINERIES & HEAVY PLANT SHUTDOWNS.
Petrochemical Heat Exchangers
Tightening tightly nested tube-sheet and bonnet flanges where standard sockets fail.
Pipeline Flange Maintenance
Servicing high-pressure valve connections in restricted subterranean or offshore modules.
Heavy Machinery Assembly
Securing high-torque bolts in confined structural frames with certified +-3% accuracy.
FREQUENTLY ASKED QUESTIONS ABOUT
LOW PROFILE WRENCHES
What materials are used in the construction of Boltorq LOW series wrenches?
The hydraulic cylinder is made of specialized aircraft-grade aluminum alloy, internal spares use high-nickel alloy steel, and drive bushes feature self-lubricating low-nickel bronze.
How do I select the correct cassette size for the LOW series?
Select your cassette based on the exact nut across-flat (A/F) dimension, ranging from 19mm on the 2 LOW model up to 175mm on the 30 LOW model.
Where can I submit a commercial or technical proposal request?
Contact our export and engineering desk directly at sales@boltorq.com or call +91 98927 03895.
What mechanical design allows the Boltorq LOW Series to operate in narrow clearances?
The LOW series incorporates an ultra-compact nose radius, direct-hex inline cassette drive, and a lightweight Aircraft-Grade Aluminum Alloy housing that fits tightly nested bolt circles where standard square drive sockets cannot enter.
What is the operating hydraulic pressure and torque range of the LOW Series?
All Boltorq LOW Series models operate at 700 Bar (10,000 PSI) working pressure, providing calibrated torque outputs from 230 Nm (2 LOW) up to 45,000 Nm (30 LOW) with +-3% accuracy.
How does the fine-toothed ratchet and pawl mechanism prevent mechanical backlash?
The fine-toothed ratchet pawl design combined with first-stroke rod engagement ensures immediate engagement upon piston extension, eliminating backlash and providing smooth, highly repeatable stroke cycles.
What across-flat (A/F) nut sizes can be handled by Boltorq LOW hex cassettes?
Interchangeable hex cassettes cover a broad nut size range from 19 mm to 175 mm A/F across the 5 models (2 LOW, 4 LOW, 8 LOW, 14 LOW, and 30 LOW).
READY TO SOLVE YOUR TIGHT-SPACE BOLTING CHALLENGES?
Contact our team at sales@boltorq.com or info@boltorq.com for custom cassette configurations and fast global delivery.