NFPA Mounting Style Guide

Per the catalog: “Good — While this style of mount is a widely used one, its use should be restricted to pressures under 1,000 psi, short strokes (under 36″) and standard rod diameters.” The round retainer is not used on 1⅛”, 1½”, 2″ bores or select 2½” and 3¼” bore/rod combinations — tie rods thread directly into the flange in those sizes.

1,000 PSI Limit Rod End 1⅛”–14″ Bore

Per the catalog: “Better — Satisfactory for maximum operating pressure and long strokes if properly applied.” The extra-size flange provides a larger bolt pattern for higher load capacity. Includes full round gland retainer on most bore/rod combinations. See Accessories Brochure for detailed mounting data.

Full Pressure Long Stroke OK Rod End

Per the catalog: “Best — Highly recommended. This is the best style of flange mounting. Used extensively on high tonnage presses and other heavy duty applications.” Features an RD pilot boss for precise alignment. Can be mounted on the back face of the head flange. Sheffer recommends Style 6 rod end with S.A.F.E. coupling for best radial alignment.

Best Rating High Tonnage RD Pilot

Per the catalog: “Good — While this style of mount is a widely used one, its use should be restricted to pressures under 1,000 psi, short strokes (under 36″) and standard rod diameters.” Round retainer not used on 1⅛”, 1½”, 2″ bores or select 2½”/3¼” combinations — a square retainer the same size as the head is used instead.

1,000 PSI Limit Cap End 1⅛”–14″ Bore

Per the catalog: “Better — Satisfactory for maximum operating pressure and long strokes if properly applied.” Larger bolt pattern than standard RF provides higher load capacity at full 3,000 PSI working pressure. Consult Accessories Brochure for detailed mounting data and Engineering Brochure for long-stroke information.

Full Pressure Long Stroke OK Cap End

Per the catalog: “Best — Highly recommended. This is the best style of flange mounting. Used extensively on high tonnage presses and other heavy duty applications.” Can be mounted on the back face of the flange. Sheffer recommends Style 6 rod end and S.A.F.E. Coupling for good radial alignment.

Best Rating High Tonnage Cap End

Lug pairs project from the side of the barrel with tapped mounting holes (SB bolt size). Key catalog dimensions: US (lug center spacing), SW (lug width), SU (lug height), ST (lug thickness), TS (overall lug span). When specifying with side ports (positions 2, 4, 6, or 8), verify clearance between port fitting and lug for bolt insertion.

Side Lug 1⅛”–14″ Bore All Pressures

The lug mounting holes align exactly with the bore centerline (ST dimension), so thrust passes directly through the lug fasteners with no offset moment. The catalog lists TS and US dimensional data for each bore size. Same gland retainer construction notes as SL apply — square retainer used on select small bores.

Centerline Thrust 1⅛”–14″ Bore All Pressures

Lugs are integral to both the cap and head ends (EB bolt size). Available 1⅛” through 8″ bore only. Key catalog dimensions: EL (lug length), EO (lug offset from cylinder end), EX (lug extension), ET (lug thickness). When using a rod eye or clevis, specify extra plain rod extension per catalog Chart A to clear the lug.

End Lugs 1⅛”–8″ Bore Only All Pressures

Integral trunnion pins at the front head (rod end). Per catalog: pins are designed for shear loads only — not bending. Pillow blocks must be mounted as close to the head as possible and support the full pin length. Key dimensions: TD (pin diameter, +.000/-.001), TL (pin length), UT (overall trunnion width), XG (cap to pivot). XI dimensions must be customer-supplied on all T-style mounts.

Front Pivot Shear Load Only 2,000 PSI limit on large bores

Integral trunnion pins at the rear cap end. Key dimensions: TD (pin diameter), TL (pin length), UT (overall trunnion width), XJ (rod end to pivot + stroke). The round gland retainer is not used on 1⅛”, 1½”, 2½” bore (with 1¾” rod), or 3¼” bore (with 2″ rod) — square retainer is used and the rod gland can be removed without loosening tie rods.

Rear Pivot Shear Load Only Lubrication Required

Trunnion ring positioned between the heads — position is NOT adjustable. Per catalog: “NOTE: XI Dimensions must be supplied by customer on all correspondence.” Both XI MIN and XI MAX + STROKE must be specified. Key dims: TB (ring width), TM (ring OD), TT (pin width), UM (overall width). Square retainer used on 1⅛”, 1½”, 2″ bore, 2½” with 1⅜”/1¾” rod, 3¼” with 2″ rod.

Mid-Barrel Pivot XI Dims Required Not Adjustable

Catalog dimensions include: CB (clevis bore width), CD (clevis bore diameter), CW (clevis width), CL (overall clevis length), LR (lug length), MR (mounting radius). Available 1⅛” through 8″ bore only. A pivot mount is also available — pivot width is the same as CB. Square retainer replaces round retainer on 1⅛”, 1½”, 2″, 2½” (with 1⅜”/1¾” rod), and 3¼” (with 2″ rod) bores.

Cap End Pivot 1⅛”–8″ Bore Only Pivot Option Available

Side rails fit flush to the barrel OD with a close E-.003/2-.008 tolerance and are tapped with NT thread (size varies by bore). Available 1½” through 8″ bore only. Some bore/rod combinations are not available — “NA” in the catalog. Catalog notes: the 1⅛” bore has only one tapped hole in the head and cap. Includes thrust key option for side-mounted cylinders in severe service.

Flush Rail 1½”–8″ Bore Only Thrust Key Option

L-shaped foot brackets bolt to flat surfaces using AB bolt size (6 holes per bracket; 4 holes on 1⅛” bore). Available 1⅛” through 8″ bore only. Per catalog: “This style of mount is not recommended for pressures in excess of 1,000 psi or strokes over 36 inches.” For higher pressures, the catalog recommends End Lug (EL) or Side Lug (SL) instead. Square retainer used on 1⅛”, 1½”, 2″, 2½” (with 1⅜”/1¾” rods), and 3¼” (with 2″ rod).

1,000 PSI Limit 1⅛”–8″ Bore Only Max 36″ Stroke