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SLF & SLFH Unhoused Spring Mounts

Pump with SPring Mount

SLF & SLFH Unhoused Spring Mounts provide the greatest deflection – up to 2″ to ensure excellent isolation. They are used to support equipment located on upper building levels where there are wide vibration sensitive spans. For outdoor applications where wind loads may affect lateral stability, see SLR or SSLRH restrained spring mounts.

SLFH one inch deflection spring mounts provide far greater vibration control than the lower deflection neoprene mounts. Each Powder coated steel spring is in series with neoprene, providing excellent isolation efficiency. The spring serves to isolate a broad range of disturbing vibration frequencies, while the rubber is a high frequency or noise break. Start and stop as well as horizontal wind force will require the use of C, SLR or SSLFH Type mounts that have built-in horizontal limits.

SLFH two inch deflection spring mounts are for use on equipment located on upper level wide building spans, where more than one inch of deflection is needed to cancel the effect of the building span’s deflection. Two inch deflection springs use the same holders as one inch springs.


SLF – Unhoused Spring Mount

SLF Unhoused Spring Mount

SLFH – Unhoused Spring Mount

SLFH Unhoused Spring Mount
Height Saving Bracket

Height Saving Bracket –
Use when equipment cannot be raised to mount’s free & operating height.

INSTALLATION: Block up equipment to mount’s required free and operating height (see tables below), then make connections to the unit. Position mounts under unit. Take two turns on each adjustment bolt working around the unit until springs are compressed just enough to remove blocks. Do not “jack up” equipment significantly during spring adjustment. All springs have additional travel to solid equal to 50% of the rated deflection except SLFH-B2-450, which has 38% at rated capacity.

SLF 1″ Deflection Unhoused Spring Mounts
Type & Size Rated Capacity Rated Deflection Mount Constant Spring Color/Stripe Dimensions
A Free & Oper.
Height
SLF-X-12 12 lbs 1.25″ 10 lbs/in Orange 2 ″ 3-3/4″
SLF-X-23 23 lbs 1.30″ 18 lbs/in Brown
SLF-X-33 33 lbs 1.10″ 30 lbs/in Red
SLF-X-54 54 lbs 1.20″ 45 lbs/in White
SLF-X-76 76 lbs 1.02″ 73 lbs/in Black
SLF-X-113 113 lbs 1.00″ 113 lbs/in Yellow
SLF-X-130 130 lbs 1.00″ 130 lbs/in Purple
SLF-X-175 175 lbs 1.00″ 175 lbs/in Silver
SLF-X-210 210 lbs 1.00″ 210 lbs/in Blue
3/4″ Minimum Deflection
SLFH 1″ Unhoused Spring Mounts
Type & Size Rated Capacity Rated Deflection Mount Constant Spring Color/Stripe Dimensions
C E G Free & Oper. Height
SLFH-A-45 45 lbs 1.60″ 28 lbs/in Blue 2-1/4″ 3″ 3-5/8″ 4-1/4″
SLFH-A-75 75 lbs 1.50″ 50 lbs/in Orange
SLFH-A-125 125 lbs 1.33″ 94 lbs/in Brown
SLFH-A-200 200 lbs 1.15″ 174 lbs/in Black
SLFH-A-310 310 lbs 1.00″ 310 lbs/in Yellow
SLFH-A-400 400 lbs 1.00″ 400 lbs/in Green
SLFH-A-510 510 lbs 1.00″ 510 lbs/in Red 2-1/4″ 3″ 3-5/8″ 4-5/8″
SLFH-A-625 625 lbs 1.00″ 625 lbs/in White
1-1/2″ Minimum Deflection
SLFH 2″ Deflection Unhoused Spring Mounts
Type & Size Rated Capacity Rated Deflection Mount Constant Spring Color/Stripe Dimensions
C E G Free & Oper. Height
SLFH-B-20 20 lbs 2.40″ 8 lbs/in Tan 2-3/4″ 4-1/4″ 5-1/8″ 6″
SLFH-B-26 26 lbs 2.18″ 12 lbs/in White/Blue
SLFH-B-35 35 lbs 2.20″ 16 lbs/in Purple
SLFH-B-50 50 lbs 2.20″ 24 lbs/in White/Red
SLFH-B-65 65 lbs 2.10″ 31 lbs/in Brown
SLFH-B-85 85 lbs 2.10″ 40 lbs/in White/Black
SLFH-B-115 115 lbs 2.00″ 57 lbs/in Silver
SLFH-B-150 150 lbs 2.00″ 75 lbs/in Orange
SLFH-B2-210 210 lbs 2.12″ 99 lbs/in Silver 2-3/4″ 4-1/8″ 5-1/4″ 6-3/4″
SLFH-B2-290 290 lbs 2.00″ 144 lbs/in Blue
SLFH-B2-450 450 lbs 2.00″ 224 lbs/in Tan
1-1/2″ Minimum Deflection