English 
 |
| Base Model: | |
|---|---|
| PDF Export | |
RTH Series
Baier
RTH
OVERVIEW
The Baier RTH Series is a low-profile, direct-hex hydraulic torque wrench for controlled tightening and loosening where surrounding clearance is limited. The hollow working head acts directly on the nut, reducing the space required by a separate square-drive socket arrangement.
Restricted-clearance design: The hollow flat working head is intended for bolting positions with limited surrounding space.
Direct hex engagement: The working head engages the nut directly.
Detachable two-part structure: The power head and working head separate for configuration changes.
Flexible working-head selection: Five base models cover 69 cataloged working-head variants.
Wide series coverage: Confirmed configurations cover 267–48,427 N·m and 19–175 mm hex openings.
Controlled hydraulic operation: Maximum operating pressure is 70 MPa and catalog-stated torque accuracy is ±3%.
Important: Each working head has its own permitted torque and dimensional limits. Confirm the exact base model and head before quotation.
SPECIFICATIONS
Series | RTH |
|---|---|
Base Models | 5 |
Cataloged Working-Head Variants | 69 |
Series Torque Coverage | 267–48,427 N·m |
Hex Opening Coverage | 19–175 mm |
Torque Accuracy | ±3% |
Maximum Operating Pressure | 70 MPa |
Base Model | Combined Torque Coverage | Combined Hex Range | Power Head Weight |
|---|---|---|---|
RTH03 | 267–3,013 N·m | 19–60 mm | 2.9 kg |
RTH05 | 531–6,015 N·m | 27–80 mm | 5.1 kg |
RTH12 | 1,152–14,328 N·m | 50–105 mm | 10.5 kg |
RTH20 | 2,124–23,266 N·m | 70–115 mm | 18.9 kg |
RTH40 | 4,380–48,427 N·m | 80–175 mm | 46.2 kg |
Base Model | Hex Range | Torque Coverage | L | H1 | H2 | W1 | W2 | A |
|---|---|---|---|---|---|---|---|---|
RTH03 | 19–46 mm | 267–2,602 N·m | 193 | 125 | 97 | 32 | 51 | 10–15 |
RTH03 | 50–60 mm | 304–3,013 N·m | 193 | 136 | 108 | 32 | 51 | 10–11 |
RTH05 | 27–65 mm | 531–5,386 N·m | 250 | 158 | 125 | 41 | 64 | 11–19 |
RTH05 | 70–80 mm | 604–6,015 N·m | 250 | 169 | 136 | 41 | 64 | 11.5–12 |
RTH12 | 50–80 mm | 1,152–11,725 N·m | 310 | 189 | 157 | 52 | 78 | 15–15.2 |
RTH12 | 85–105 mm | 1,430–14,328 N·m | 310 | 214 | 182 | 52 | 78 | 16–22 |
RTH20 | 70–100 mm | 2,124–21,243 N·m | 378 | 223 | 191 | 64 | 97 | 8–21 |
RTH20 | 105–115 mm | 2,315–23,266 N·m | 378 | 236 | 204 | 64 | 97 | 18–24 |
RTH40 | 80–117 mm | 4,380–43,827 N·m | 405 | 291 | 242 | 83 | 93 | 25–31 |
RTH40 | 120–175 mm | 4,853–48,427 N·m | 425 | 309 | 260 | 83 | 93 | 25–34 |
Dimensions are in millimetres. The table summarizes confirmed working-head groups; exact head dimensions and permitted torque must be checked for the selected hex size.
APPLICATIONS
The RTH Series is designed for industrial bolted connections where a conventional square-drive wrench and socket arrangement does not have enough surrounding clearance.
The hollow working head fits directly around the nut. This arrangement is useful when adjacent structures, nearby fasteners or equipment geometry limit radial access.
The wrench supports controlled hydraulic tightening and loosening within the selected working head's permitted torque range.
Suitability depends on required torque, hex size, available clearance, joint geometry and access for the hydraulic connection. Send a drawing or clear dimensional photos when space is critical.
SELECTION & CONFIGURATION
RTH selection requires both a compatible power head and the correct working head. Do not select only from the combined base-model range.
Confirm the required working torque.
Confirm the nut hex size.
Measure the available surrounding and height clearance.
Check the exact working head's permitted torque and dimensions.
Confirm the hydraulic connection and 70 MPa pump-and-hose compatibility.
Send joint drawings or dimensional photos, quantity and destination market for quotation.
A selected RTH configuration consists of one compatible power head and one matching working head. One power head may support multiple compatible working heads, but each combination must be verified.
Hydraulic pump, hose, couplers, additional working heads, reducers, carrying case and other pictured accessories are not confirmed as standard supply. Confirm the quotation and packing list before ordering.
FAQ
It is a low-profile hydraulic wrench whose hollow working head engages the nut directly, supporting controlled bolting where surrounding clearance is limited.
Confirmed catalog configurations cover 267–48,427 N·m across five base models and their compatible working heads.
The cataloged working-head range covers 19–175 mm. Exact availability depends on the selected base model and working head.
Maximum operating pressure is 70 MPa, and catalog-stated torque accuracy is ±3%.
Yes. A compatible power head can be paired with multiple working heads, subject to base-model compatibility and each head's permitted torque.
Send the required torque, nut hex size, available clearance and joint drawing or dimensional photos. Exact working-head limits must be checked before quotation.
No. It requires a compatible 70 MPa hydraulic pump and pressure-rated hose system.
Supply scope varies by order. Confirm the hydraulic pump, hose, couplers, additional heads, reducers, carrying case and other accessories in the quotation.
