Product Overview
The HB100 bracket set is used to replace the main mounting brackets that position a compatible Mighty Mule, GTO or Linear swing gate opener arm on the gate and post. These brackets are more than simple hardware; they set the pivot points that determine how the actuator pushes and pulls the gate. Worn, bent, missing or incorrectly placed brackets can cause the opener to bind, stop short, overload, break mounting hardware, or place stress on the gate hinges. HB100 is commonly used on FM350, FM500, FM502 and related Mighty Mule installations, and it also appears in several GTO PRO series bracket references. Because model years and operator generations vary, the bracket set should be matched by the parts diagram and not only by the opener name.
Compatible With
- Mighty Mule FM350, FM352, FM500 and FM502 swing gate operators.
- Current Mighty Mule models commonly listed with HB100, including MM271, MM272, MM371W, MM372W, MM571W and MM572W.
- Related Mighty Mule FM600 and select MM series bracket applications.
- GTO PRO-SW1000, PRO-SW2000, PRO-SW2000XL(S), and select older PRO-SW3000 / PRO-SW3000XL applications when parts diagrams confirm HB100.
- Verify each operator arm, gate geometry and production date before ordering.
Features & Specifications
| Manufacturer | Linear / GTO / Mighty Mule |
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| Product Type | Hardware bracket set |
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| Part Number | HB100 |
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| Application | Swing gate opener arm mounting brackets |
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| Compatible Operator Type | Select Mighty Mule, GTO and Linear swing gate openers |
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| Quantity Guidance | One bracket set is typically used per opener arm |
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| Related Item | H101P hardware bag is related but not the same item |
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| Notes | Fitment depends on model, generation, bracket layout and gate geometry |
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Also Known As / Related Part Numbers
- HB100
- HB-100
- SR-HB100
- GTO HB100
- Mighty Mule HB100
- Linear HB100
- Hardware Brackets Box
- Hardware bracket set
- Bracket set for FM350
- Bracket set for FM500
- Bracket set for FM502
Technician Note
If the old brackets are bent, look for the reason before replacing them. Binding hinges, lack of gate stops, wrong pivot geometry or a gate impact can damage the new brackets if the cause is not corrected.
Before Ordering Checklist
- Confirm the gate opener model and arm type.
- Check whether you need HB100 brackets, H101P hardware, or both.
- Compare the existing brackets to the parts diagram.
- Inspect gate hinges, posts and stops before reinstalling the operator.
- Use proper bracket geometry for push-to-open or pull-to-open installations.
Important Ordering Warnings
- HB100 and H101P should not be confused.
- Wrong bracket geometry can overload the actuator and create unsafe gate movement.
Professional Advisory
A swing gate is heavy and can move when the operator arm is removed. Secure the gate before servicing brackets, and have a qualified technician address structural gate or hinge issues.
Product Questions & Answers
What is included with the HB100 bracket set?
HB100 is a replacement hardware bracket set for compatible Mighty Mule and GTO swing gate opener arms. Exact contents should be checked against the current parts diagram.
Is HB100 compatible with FM350 and FM500?
Yes. HB100 is commonly listed for FM350, FM352, FM500 and FM502, along with current Mighty Mule models such as MM271, MM272, MM371W, MM372W, MM571W and MM572W.
Is HB100 the same as H101P?
No. HB100 is the bracket set. H101P is the hardware bag or hardware kit. Many repairs require one or the other, not always both.
How many HB100 sets are needed?
Each swing gate opener arm typically uses one bracket set. Dual gate systems may require a set for each arm if both sides need brackets.
Can HB100 be used on older GTO PRO operators?
Some listings associate HB100 with PRO1000, PRO2000, PRO2000XL(S), and select pre-10/2008 PRO3000 / PRO3000XL models. Confirm by parts diagram before ordering.
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