LiftMaster 2100P standard-duty weld-on gate hinge (Guardian 2100.100) — flat mount, both sides, prime coated, rated 1,000 lb per pair. Sold as a pair: two hinges, enough to hang one gate leaf. Part of the Guardian hinge line LiftMaster took over in 2016 (Guardian has made gate hinges since 1985), with the roller-cage bearing that gives it several times the bearing surface of an ordinary barrel hinge.
How to read the part number. The last two digits give the mount, the letter the finish. Flat = weld plate for square or rectangular tube; round = curved plate for round pipe; bolt = bolt-on plate. Pick the heavy-duty (20xx) line for leaves over about 1,000 lb for the pair, the Gorilla (2060/2062/2064) where the gate must not be lifted off, and stainless (2180SS/2185SS) near salt water or pool chemicals.
Specifications
Factory dimension drawing — applies to 2100P, 2100U and 2100Z.
| Part number | 2100P (Guardian 2100.100) |
|---|---|
| Family | LiftMaster Standard-Duty (Guardian Standard-Duty) |
| Rating | 1,000 lb per pair |
| Bearing | Roller cage bearing |
| Mount | Flat mount, both sides |
| Finish | Prime coated |
| Dimensions | 2-3/8 in H; body 2-7/8 in W; 1-1/2 in post saddle |
| Lubrication | Grease zerk |
| Pack | Pair (2 hinges) |
| Condition | Genuine LiftMaster, new |
Welding and maintenance
- Weld the yoke to the gate and the channel to the post.
- Weld the vertical edges only — never across the top or bottom, which can distort the bearing.
- Keep the top and bottom hinge pins on one straight vertical line, or the gate will bind and drift.
- Grease through the zerk: one pump of multi-purpose grease every 3 months, more often in severe weather. Do not over-grease.
The full LiftMaster hinge range
| Part number | Family | Rating per pair | Mount | Finish |
|---|---|---|---|---|
| 2000P | Heavy-Duty | 3,000 lb | Flat mount, both sides | Prime coated |
| 2000U | Heavy-Duty | 3,000 lb | Flat mount, both sides | Unfinished |
| 2000Z | Heavy-Duty | 3,000 lb | Flat mount, both sides | Zinc plated |
| 2010P | Heavy-Duty | 3,000 lb | Round mount, both sides | Prime coated |
| 2010Z | Heavy-Duty | 3,000 lb | Round mount, both sides | Zinc plated |
| 2015P | Heavy-Duty | 3,000 lb | Flat to gate, round to post | Prime coated |
| 2015Z | Heavy-Duty | 3,000 lb | Flat to gate, round to post | Zinc plated |
| 2025P | Heavy-Duty | 3,000 lb | Flat to gate, bolt to post | Prime coated |
| 2050P | Heavy-Duty | 3,000 lb | Bolt to gate, bolt to post | Prime coated |
| 2050Z | Heavy-Duty | 3,000 lb | Bolt to gate, bolt to post | Zinc plated |
| 2060P | Gorilla Tamperproof | 1,000 lb | Flat mount, both sides | Prime coated |
| 2060U | Gorilla Tamperproof | 1,000 lb | Flat mount, both sides | Unfinished |
| 2060Z | Gorilla Tamperproof | 1,000 lb | Flat mount, both sides | Zinc plated |
| 2062P | Gorilla Tamperproof | 1,000 lb | Bolt to gate, bolt to post | Prime coated |
| 2064P | Gorilla Tamperproof | 1,000 lb | Round to gate, round to post | Prime coated |
| 2100P | Standard-Duty | 1,000 lb | Flat mount, both sides | Prime coated |
| 2100U | Standard-Duty | 1,000 lb | Flat mount, both sides | Unfinished |
| 2100Z | Standard-Duty | 1,000 lb | Flat mount, both sides | Zinc plated |
| 2110P | Standard-Duty | 1,000 lb | Round mount, both sides | Prime coated |
| 2110Z | Standard-Duty | 1,000 lb | Round mount, both sides | Zinc plated |
| 2115P | Standard-Duty | 1,000 lb | Flat to gate, round to post | Prime coated |
| 2125P | Standard-Duty | 1,000 lb | Flat to gate, bolt to post | Prime coated |
| 2150B | Standard-Duty | 1,000 lb | Bolt to gate, bolt to post | Black powder coat |
| 2150P | Standard-Duty | 1,000 lb | Bolt to gate, bolt to post | Prime coated |
| 2150Z | Standard-Duty | 1,000 lb | Bolt to gate, bolt to post | Zinc plated |
| 2170AS | Specialty Aluminum/Steel | 600 lb | Flat to gate, flat to post | Aluminum with steel yoke |
| 2180SS | Specialty Stainless Steel | 1,000 lb | Flat mount, both sides | Stainless steel |
| 2185SS | Specialty Stainless Steel | 1,000 lb | Bolt to gate, bolt to post | Stainless steel |
| 3100P | Adjustable Standard-Duty | 1,000 lb | Flat mount, both sides | Prime coated |
| 3100Z | Adjustable Standard-Duty | 1,000 lb | Flat mount, both sides | Zinc plated |
| 3110P | Adjustable Standard-Duty | 1,000 lb | Round mount, both sides | Prime coated |
| 3150P | Adjustable Standard-Duty | 1,000 lb | Bolt to gate, bolt to post | Prime coated |
| 3150Z | Adjustable Standard-Duty | 1,000 lb | Bolt to gate, bolt to post | Zinc plated |
| 3300AS | Olympian Adjustable | 2,000 lb | Flat or round mount (adjustable) | Aluminum body, steel yoke, zinc finish |
Common questions
Is this one hinge or two?
Two — a pair, for one gate leaf.
Will it carry my gate?
The 1,000 lb rating is for the pair on a properly built, plumb leaf. Heavy or tall leaves, or leaves on a gate operator, are better on the heavy-duty (20xx) line.
Can I use it on an automated gate?
Yes — these are sold in LiftMaster's gate operator accessory range. A free-swinging leaf on good hinges is what every swing operator manufacturer asks for; binding hinges are a common cause of operator overload faults.
Related
All swing gate hinges · 2000P heavy-duty · 2060P Gorilla · 2180SS stainless · 3300AS Olympian
Not sure which mount you need? Send a photo of the post and gate frame to parts@gatehousesupplies.com or call 866-965-5599.
