Commercial Self-closing Hinge

Commercial self-closing hinges need to handle the daily rigors of frequent use.  Waterson hinges are designed to manage commercial closing demands, while maintaining fluid and efficient motion.  A typical 7’0 door utilizes three active Waterson Closer Hinges to create a perfect, self-closing system. Each hinge’s unique digital panel allows the spring tensions to adjust precisely according to door weight and environmental conditions.  Additionally, Waterson hinges meet all ADA codes concerning speed control, force, and clearance.

Automatic fire door closers-K51M

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Comparison With Door Closer

Waterson Self-closing hingeTraditional door closer
Position
On door and easy as regular hinges
On door and need to preserve installation space
Aesthetics
Elegant and minimized visual intrusion
Bulky and maximized visual intrusion
Opening
Effortless
Strenuous
Outdoor
Yes, High Weather resistance
Yes and easily broken
Fire resistanceYesYes
Durability
1 million cycle test passed
Mostly 20 thousand cycles depending on brands
CostHardware+ Installation+ Maintenance

Low total cost

Hardware+ Installation+ Maintenance

High total cost

Waterson Self Closing Hinge V.S. Door Closer

UL And SGS Test Report

UL cert _Waterson Hinge USA
SGS-TEST REPORT1

Specification and Configuration

US STANDARD 

1. Specification

Hinge TypeDIM (H x W)Door thicknessModel#GageOptions
Full Mortise4″ x 4″1-3/8″K51M400

0.130″ /3.30MM

Square

1/4R

5/8R

4-1/2″ x 4-1/2″1-3/4″K51M-450

0.134″ / 3.40MM

5″ x 5″1-3/4″~2-1/2″K51M-500

0.146″ / 3.71MM

5″ x 5″1-3/4″~2-1/2″K51M-500D

0.190″ / 4.83MM

6″ x 6″1-3/4″~2-1/2″K51M-660

0.160″ / 4.06MM

Swing Clear4-1/2″ x 4-1/2″1-3/4″K51L-SWRH-450

0.130″ /3.30MM

2. Configuration

Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C) 

Hold-openQty of HingeFinish
1-3/4″
< 7’0 x 4’0
≤ 260 lbs
K51M-450-A3 3 hinges/door (SA.SA.SA1)Satin Brushed

Black

Gold

ORB

K51M-450-B3
3 hinges/door (DS.HA.SA1)
K51M-450-C33 hinges/door (SB.SA.SA1)
K51M-450-D33 hinges/door (DS.HA.SB)
1-3/4″
< 8’0 x 4’0
≤ 260 lbs
K51M-450-C44 hinges/door (SB.SA.SA.SA1)
K51M-450-D44 hinges/door (DS.HA.SB.SA1)
1-3/4″
< 8’0 x 4’0
≤ 330 lbs
K51M-450-A44 hinges/door (SA.SA.SA1.SA1)
K51M-450-B44 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C) 

Hold-openQty of HingeFinish
1-3/8″
< 7’0 x 4’0
≤ 260 lbs
K51M-400-A33 hinges/door (SA.SA.SA1)Satin Brushed

Black

Gold

ORB

K51M-400-B33 hinges/door (DS.HA.SA1)
K51M-400-C33 hinges/door (SB.SA.SA1)
K51M-400-D33 hinges/door (DS.HA.SB)
1-3/8″
< 8’0 x 4’0
≤ 260 lbs
K51M-400-C44 hinges/door (SB.SA.SA.SA1)
K51M-400-D44 hinges/door (DS.HA.SB.SA1)
1-3/8″
< 8’0 x 4’0
≤ 330 lbs
K51M-400-A44 hinges/door (SA.SA.SA1.SA1)
K51M-400-B44 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C)  

Hold-openQty of HingeFinish
1-3/4″ or 2-1/4″
< 7’0 x 4’0
≤ 260 lbs
K51M-500D-A33 hinges/door (SA.SA.SA1)Satin Brushed

Black

Gold

K51M-500D-B33 hinges/door (DS.HA.SA1)
K51M-500D-C33 hinges/door (SB.SA.SA1)
K51M-500D-D33 hinges/door (DS.HA.SB)
1-3/4″ or 2-1/4″
< 8’0 x 4’0
≤ 260 lbs
K51M-500D-C44 hinges/door (SB.SA.SA.SA1)
K51M-500D-D44 hinges/door (DS.HA.SB.SA1)
1-3/4″ or 2-1/4″
< 8’0 x 4’0
≤ 330 lbs
K51M-500D-A44 hinges/door (SA.SA.SA1.SA1)
K51M-500D-B44 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C)  

Hold-openQty of HingeFinish
1-3/4″ or 2-1/4″
< 7’0 x 4’0
≤ 260 lbs
K51L-SWRH-450-A33 hinges/door (SA.SA.SA1)Satin Brushed
K51L-SWRH-450-B33 hinges/door (DS.HA.SA1)
K51L-SWRH-450-C33 hinges/door (SB.SA.SA1)
K51L-SWRH-450-D33 hinges/door (DS.HA.SB)
1-3/4″ or 2-1/4″
< 8’0 x 4’0
≤ 260 lbs
K51L-SWRH-450-C44 hinges/door (SB.SA.SA.SA1)
K51L-SWRH-450-D44 hinges/door (DS.HA.SB.SA1)
1-3/4″ or 2-1/4″
< 8’0 x 4’0
≤ 330 lbs
K51L-SWRH-450-A44 hinges/door (SA.SA.SA1.SA1)
K51L-SWRH-450-B44 hinges/door (DS.HA.SA.SA1)

US STANDARD 

1. Specification

Hinge TypeDIM (H x W)ModelDoor thicknessModel#GaugeRadius
Full Mortise4″ x 4″1-3/8″K51M400

0.13″ /3.3MM

Square

1/4R

5/8R

4-1/2″ x 4-1/2″1-3/4″K51M-450

0.13″ / 3.3MM

5″ x 5″1-3/4″~2-1/2″K51M-500

0.146″ / 3.71MM

5″ x 5″1-3/4″~2-1/2″K51M-500D

0.190″ / 4.83MM

6″ x 6″1-3/4″~2-1/2″K51M-660

0.16″ / 4.06MM

Swing Clear4-1/2″ x 4-1/2″1-3/4″K51L-SWRH-450

0.13″ /3.3MM

2. Configuration

Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C) 

Hold-openQty of HingeFinish
1-3/4″
< 7’0 x 4’0
≤ 260 lbs
K51M-450-A3 3 hinges/door (SA.SA.SA1)Satin Brushed

Black

Gold

ORB

K51M-450-B3
3 hinges/door (DS.HA.SA1)
K51M-450-C33 hinges/door (SB.SA.SA1)
K51M-450-D33 hinges/door (DS.HA.SB)
1-3/4″
< 8’0 x 4’0
≤ 260 lbs
K51M-450-C44 hinges/door (SB.SA.SA.SA1)
K51M-450-D44 hinges/door (DS.HA.SB.SA1)
1-3/4″
< 8’0 x 4’0
≤ 330 lbs
K51M-450-A44 hinges/door (SA.SA.SA1.SA1)
K51M-450-B44 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C) 

Hold-openQty of HingeFinish
1-3/8″
< 7’0 x 4’0
≤ 260 lbs
K51M-400-A33 hinges/door (SA.SA.SA1)Satin Brushed

Black

Gold

ORB

K51M-400-B33 hinges/door (DS.HA.SA1)
K51M-400-C33 hinges/door (SB.SA.SA1)
K51M-400-D33 hinges/door (DS.HA.SB)
1-3/8″
< 8’0 x 4’0
≤ 260 lbs
K51M-400-C44 hinges/door (SB.SA.SA.SA1)
K51M-400-D44 hinges/door (DS.HA.SB.SA1)
1-3/8″
< 8’0 x 4’0
≤ 330 lbs
K51M-400-A44 hinges/door (SA.SA.SA1.SA1)
K51M-400-B44 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C)  

Hold-openQty of HingeFinish
1-3/4″ or 2-1/4″
< 7’0 x 4’0
≤ 260 lbs
K51M-500D-A33 hinges/door (SA.SA.SA1)Satin Brushed

Black

Gold

K51M-500D-B33 hinges/door (DS.HA.SA1)
K51M-500D-C33 hinges/door (SB.SA.SA1)
K51M-500D-D33 hinges/door (DS.HA.SB)
1-3/4″ or 2-1/4″
< 8’0 x 4’0
≤ 260 lbs
K51M-500D-C44 hinges/door (SB.SA.SA.SA1)
K51M-500D-D44 hinges/door (DS.HA.SB.SA1)
1-3/4″ or 2-1/4″
< 8’0 x 4’0
≤ 330 lbs
K51M-500D-A44 hinges/door (SA.SA.SA1.SA1)
K51M-500D-B44 hinges/door (DS.HA.SA.SA1)
Door InfoModel#Self-closingFluid Motion

– door open ≤ 120°
– temperature > 32°F (0°C)  

Hold-openQty of HingeFinish
1-3/4″ or 2-1/4″
< 7’0 x 4’0
≤ 260 lbs
K51L-SWRH-450-A33 hinges/door (SA.SA.SA1)Satin Brushed
K51L-SWRH-450-B33 hinges/door (DS.HA.SA1)
K51L-SWRH-450-C33 hinges/door (SB.SA.SA1)
K51L-SWRH-450-D33 hinges/door (DS.HA.SB)
1-3/4″ or 2-1/4″
< 8’0 x 4’0
≤ 260 lbs
K51L-SWRH-450-C44 hinges/door (SB.SA.SA.SA1)
K51L-SWRH-450-D44 hinges/door (DS.HA.SB.SA1)
1-3/4″ or 2-1/4″
< 8’0 x 4’0
≤ 330 lbs
K51L-SWRH-450-A44 hinges/door (SA.SA.SA1.SA1)
K51L-SWRH-450-B44 hinges/door (DS.HA.SA.SA1)

OTHER COUNTRIES

ModelDIMDoor ThicknessGaugeFinishDoor Spec
Self-closing Combination
Self-closing & Hold-open Combination
K51M-6406″ x 4″ (H*W)35-45 mm4.1 mmSatin Brushed

Polished

Golden

Black

≤ 70kg
<1800 x 1250 mm
 ( DS, HA ) = ( Top, Bottom)
( SA, SA1 ) =( Top, Bottom)
( SB, HS ) = ( Top, Bottom)
K51M-6456″ x 4.5″ (H*W)40-50 mm
K51M-6506″ x 5″ (H*W)45-55 mm≤ 120kg
<2200 x 1250 mm
( DS, HA, SA1 ) = (Top, Middle, Bottom)
( SA, SA, SA1 ) = (Top, Middle, Bottom)
 ( SB, SA, HS ) = (Top, Middle, Bottom)
( SB, SA, SA1 ) = (Top, Middle, Bottom)
K51M-6556″ x 5.5″ (H*W)50-60 mm
K51M-6606″ x 6″ (H*W)55-65 mm

Specification

OTHER COUNTRIES

ModelDIMDoor ThicknessGaugeFinishDoor Spec
Self-closing Combination
Self-closing & Hold-open Combination
K51M-6406″ x 4″ (H*W)35-45 mm4.1 mmSatin Brushed

Polished

Golden

Black

≤ 70kg
<1800 x 1250 mm
 ( DS, HA ) = ( Top, Bottom)
( SA, SA1 ) =( Top, Bottom)
( SB, HS ) = ( Top, Bottom)
K51M-6456″ x 4.5″ (H*W)40-50 mm
K51M-6506″ x 5″ (H*W)45-55 mm≤ 120kg
<2200 x 1250 mm
( DS, HA, SA1 ) = (Top, Middle, Bottom)
( SA, SA, SA1 ) = (Top, Middle, Bottom)
 ( SB, SA, HS ) = (Top, Middle, Bottom)
( SB, SA, SA1 ) = (Top, Middle, Bottom)
K51M-6556″ x 5.5″ (H*W)50-60 mm
K51M-6606″ x 6″ (H*W)55-65 mm

Catalog

US AREA
Non-US Area

Specification

US Area
Non-US Area

Templates

K51M-400
K51M-450
K51M-500
K51M-500D
K51M-660-US
K51M-640
K51M-645
K51M-650
K51M-655
K51M-660

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