Commercial Rear Delt Fly Machine MF-RD100

Shoulder Machines
$2,099 – $2,799

The MF-RD100 Commercial Rear Delt Fly Machine isolates the posterior deltoids and upper back musculature with biomechanically optimized converging arm paths. Dual independent arms with multi-grip handles allow neutral, pronated, and supinated hand positions. The adjustable chest pad stabilizes the torso while the converging arc maximizes rear delt and rhomboid activation at peak contraction. Features a 200 lb selectorized weight stack with sealed bearing pivot system. Also functions as a reverse pec deck for complete posterior shoulder development.

⚖ Capacity 200
▦ Dimensions 58"L × 42"W × 54"H
⚎ Machine Weight 395
☹ Max User 350 lbs (159 kg)
Best For: Commercial Gym Home Gym
Load Type: Selectorized (Pin Loaded)
Certifications: CE, ISO 20957 Class S
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Key Features

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Converging Arm Path

Biomechanically optimized arc maximizes rear delt and rhomboid engagement at peak contraction

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Multi-Grip Handles

Switch between neutral, pronated, and supinated grips to target different posterior shoulder fibers

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Dual Function Design

Use as a rear delt fly or reverse pec deck — one machine, two exercises

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Sealed Bearing System

Commercial-rated pivot points for friction-free, silent operation in 24/7 gyms

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Quick-Adjust Chest Pad

One-hand chest pad adjustment for fast setup between users of all sizes

Technical Specifications

Construction & Materials

Frame Material11-gauge steel, fiberglass-reinforced nylon cams, sealed commercial bearings
Steel Gauge / Wall Thickness11-gauge (3.0mm) structural steel tubing
Footprint (L x W x H)58"L × 42"W × 54"H
Machine Weight395

Performance & Capacity

Load Capacity200
Max User Weight350 lbs (159 kg)

Detailed Specifications

Weight Stack200 lb selectorized
Arm PathConverging arc for peak rear delt activation
HandlesMulti-grip (neutral, pronated, supinated)
AdjustmentChest pad depth + seat height
BearingsSealed commercial grade
Frame11-gauge steel
FinishElectrostatic powder coat, scratch-resistant
UpholsteryHigh-density foam, marine-grade vinyl
ColorBlack/Red

Warranty & Support

WarrantyLifetime frame, 2 years parts
Shipping & DeliveryFreight delivery (curbside); 2–4 weeks lead time. White glove installation available.

Frequently Asked Questions

What muscles does a rear delt fly machine work?
The primary target is the posterior deltoid (rear shoulder). Secondary muscles include the rhomboids, middle trapezius, teres minor, and infraspinatus — collectively the upper back and rotator cuff muscles.
Rear delt fly machine vs dumbbell reverse fly — which is better?
The machine provides constant tension through the full range of motion, which is hard to replicate with dumbbells. For hypertrophy and beginners, the machine is superior. For athletic training, dumbbell variations add stability demands.
Should I buy a dedicated rear delt machine or a pec deck/rear delt combo?
A combo pec deck/rear delt machine saves space and budget. Our MF-RD100 is a dedicated rear delt machine — best for commercial gyms that want to separate chest and shoulder stations to minimize wait times.
How often should I train rear delts?
Rear delts recover quickly and can be trained 2-3 times per week. Most lifters under-train posterior deltoids, leading to shoulder imbalances and increased injury risk.
What maintenance is required?
Inspect pivot bearings annually, check cable tension monthly, and clean upholstery weekly. The sealed bearing design requires no daily lubrication.

Ready to Get Started?

Get a personalized quote for your gym setup. Volume discounts available for commercial orders.

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