GTO / Linear HB100 Bracket Set for PRO1000, 2000XL, 3000XL and Mighty Mule Swing Gate Operators
The HB100 bracket set is a replacement swing gate mounting bracket package for select GTO, Linear Pro, and Mighty Mule operator arms. This is the bracket set, not just a bag of loose fasteners. It is commonly used when the original post brackets, post pivot bracket, gate end bracket, or positive stop bracket are bent, missing, rusted, or damaged. This set is especially important because the bracket geometry controls the arm pivot point, gate travel, and opening force. A similar-looking bracket from another operator family may mount to the post but still create the wrong arm geometry.
This item is commonly used when servicing older GTO, Linear Pro, and Mighty Mule gate operator systems where the original part number, radio generation, or bracket style needs to be matched before ordering. Because these product families have been sold under multiple brand names over the years, the part number on the operator, receiver, transmitter, or parts diagram is the best way to confirm the correct replacement.
Compatible With
- GTO PRO-SW1000 swing gate operator
- GTO PRO-SW2000 swing gate operator
- GTO PRO-SW2000XL and PRO-SW2000XLS swing gate operators
- GTO PRO-SW3000 and PRO-SW3000XL units made before 10/2008 where HB100 is specified
- GTO / Linear Pro 1500 swing gate operator family where HB100 is listed
- GTO / Linear Pro 2500, 2502, and 2550 swing gate applications where the HB100 bracket group is used
- Mighty Mule FM350 swing gate operator
- Mighty Mule FM500 swing gate operator
- Select Mighty Mule FM502 dual swing gate installations using the same arm/bracket style
- Older Linear Pro / GTO swing arm systems using 350IH, 351IH, 352IH, and 353IH bracket references
Also Known As / Related Part Numbers
- HB100
- 350IH
- 351IH
- 352IH
- 353IH
- R4621
- GTO HB100
- Linear HB100
- Mighty Mule HB100
- SW1000 bracket set
- PRO1000 bracket set
- FM350 bracket set
- FM500 bracket set
Features & Specifications
| Manufacturer | Linear / GTO / Mighty Mule |
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| Part Number | HB100 |
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| Product Type | Swing gate bracket set |
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| Application | Replacement mounting brackets for select linear-arm swing operators |
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| Common Bracket References | 350IH, 351IH, 352IH, 353IH |
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| Operator Type | Residential and light commercial DC swing gate operators |
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| Typical Contents | Post brackets, post pivot bracket, gate end bracket, and positive stop bracket depending on kit version |
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Technician Notes
Replace bent or cracked brackets instead of trying to force the operator arm back into position. Incorrect pivot spacing can cause limit problems, motor strain, bracket failure, and unsafe gate movement.
Before Ordering
- Match HB100 to the operator model and production generation.
- Confirm whether you need a bracket set, a hardware bag, or both.
- Inspect gate hinges and the mounting post before replacing brackets.
- Measure and reset the arm geometry according to the operator manual after bracket replacement.
- For dual gate systems, verify whether one or both leaf brackets need service.
Professional Advisory
Gate hardware, radio controls, and receiver wiring should be installed so the operator continues to meet the required safety setup for the gate. Do not bypass photo eyes, edges, entrapment protection, or other required safety devices to make a repair work. If the gate has damaged brackets, excessive binding, incorrect limits, or unsafe wiring, have the system checked by a qualified gate technician before returning it to service.
Questions & Answers
Does HB100 include the loose bolts and pins?
HB100 is primarily the bracket set. Some kits may include related mounting pieces, but fastener contents can vary by listing. Compare the kit contents before ordering.
Can HB100 replace brackets on a SW4000XL?
No. SW4000XL style heavy duty operators use a different bracket group. Use the parts diagram for that operator before ordering.
Why does the compatibility list include both GTO and Mighty Mule?
Many older Mighty Mule products came from the same GTO / Linear Pro parts family, but generation and bracket style still need to be verified.
