Linear Ball Bearings Special Designs Linear Shafting When it's 11:00 in your linear design schedule, who should you turn to for the linear bearing you really need as opposed to settling for an "almost ok" catalog More knowledge. More Options, m More Solutions.

Minuteman PTFE composite linear bearings offer a tough, hard ceramic coated aluminum shell which does not chip, flake or generate debris. Bonded to the bearing shell ID is our Minuteman - Green - PTFE , self-lubricating liner which ranges from .025" - .035" thickness depending on bearing size. Minuteman's self-lube PTFE linear is not filled with abrasive materials like glass or metallics that require hardened steel or 440c stainless shafting. Rather, our blend employs high load, non-abrasive polyimide fillers which are able to run on soft, 300 series stainless steels- 303, 304 and 316 SS. Our...

S E L F Special Bearing Design and Manufacture LM76 specializes in the design and manufacture of special linear bearings. Our many years of plain bearing experience make us the go-to company for short and long run special designs. We love to go “Off Catalog” to give you the linear bearing you really need. Don’t settle for catalog options - we’re here for you. Don’t settle for high prices, minimums and crazy lead times! Ceramic Coated Aluminum Twin Pillow Block with 300 series stainless, PTFE, FDA Food Process Bearing Assembly. Special 2” all stainless shaft, pillow block and linear ball bearings...

Comparison chart for LM76 Ceramic Coated, Minuteman Self Lube and FDA/USDA Bearings LINEAR BEARING CATAGORIES MINUTEMAN SELF LUBE BEARINGS CERAMIC COATED BEARINGS FDA/USDA LINEAR BEARINGS Max PV (continuous) 30,000 40,000 10,000 Max P-PSI (static) 5,000 5,000 1,000 Max V SFM (no load) 400 Shaft Hardness (minumum) unlimited! 400 RB 25 Temperature Limitstypical range 8-16 8-16 .09-.12 Coefficient of Friction RB 25 8-16 Shaft Finish (RMS) RC 35 .04-.08 .12-.20 -400 to +375F -200 to +400F -400 to +375F BEARING “Quick Look Chart” QUICK LOOK HIGH LOADS DEBRIS SHOCK/ VIBRATION WASHDOWN CHEMICALS LUBRICATION...

Minuteman PTFE Self-Lubricating Bearings S E L F Mechanicals Engineering Data PSI PV Friction Operating Temp 5000 30,000 .09 -.12 -400 / +385 F SFM 400 Shafting Class L 300SS 440C Rc60 OK 2:1 Ratio for Moment Loading Vertical “Z” Axis Sleeve-Type linear bearings can suffer from “edge loading” in over-turning moment designs. In the vertical “Z” axis, the distance between bearings on 1 shaft must be spaced a minimum of 1/2 the distance of the moment arm. See the example below for clarification. The optimal ratio is 1:1. 2:1 Ratio for Moment Loading Horizontal “X,Y”Axis Sleeve-Type linear bearings...

Engineering Data ( Cont.) S E L F Calculating Load Capacity Bearing ID x Length = Sq. Inches of potential loading (A) A x PSI ( 5000 ) = (B) *60% of B = Max Static Load Example: Part Number L 1625-18SL ( 1” Diameter ) 1 x 2.25 = 2.25” of Load Area 2.25 x 5000 = 11250 pounds 60% of 11250 = 6750 Max Static Load * Some bearing manufacturers use the Sq Inches x PSI as their final load value. We consider the fact that sleeve bearings have a running clearance - in our case .001 total, .0005 either side. Thus, the shaft is never in total contact with the ID or totally loaded. We use 60% as our true...

Engineering Data ( Cont.) S E L F Edge Loading Edge loading is a phenomena associated with sleeve bearings. If there are side loads and moment loads which have not been taken into consideration relative to bearing or shaft spacing, you may experience at least one of these issues: 1. Binding 2. Sticking 3. Excessive system friction and bearing wear. The difference between linear ball bearings and LM76 Minuteman PTFE Self-Lubricating Linear Bearings. Coefficient of Friction: .015 - .001 Running Clearance: Zero Clearance Operation: Noisy and Produces Resonance Requires Lubrication Motion: Linear...

Minuteman Single,Closed and Open, PTFE Self-Lubricating Pillow Blocks S E L F G (L) D K A M Closed E F C B G 30o L (LX) K A Open M E F C B Inch ( Imperial ) Sizes PART NUMB E R SHAFT DIA. NOM. M AX . (L) (LX) A +/ - B C D F +/ - . 010 . 003 E +/ - G BOLT/ HOL E K L M IN . M M IN . . 010 PB 408-6SL 1/4 .2495 .437 1 5/8 1 3/16 13/16 1.312 .750 1 #6-5/32 3/4 3/32 3/16 PB 610-7SL 3/8 .3745 .500 1 3/4 1 5/16 15/16 1.437 .875 1 1/8 #6-5/32 7/8 9/64 3/16 PB 814-10SL 1/2 .4995 .687 2 1 11/16 1 1/4 1.688 1.000 1 3/8 #6-5/32 1 1/8 5/16 1/4 PB 1018-12SL 5/8 .6245 .875 2 1/2 1 15/16 1 5/8 2.125 1.125 1 3/4...

Minuteman Twin, Closed and Open, PTFE Self-Lubricating Pillow Blocks Closed (LPB-T) and Open (LXPB-T) Flange Blocks

Minuteman European Metric Closed and Open, PTFE Self-Lubricating Bearings European Closed and Open PTFE Self-Lubricating Bearings Part Number Prefix L = Closed LX = Open LA = Adjustable Slot L50SL=Closed Bearing LX50SL= Open Bearing LA50SL= Adjuatable Slot Bearing Part Number Suffix SA=Self-Aligning L50SLSA= Closwd, Self-Aligning Bearing TWM PTFE Self-Lubricating Thin Wall Bearings

Minuteman Closed, PTFE Self-Lubricating Bull Dog Bearings • High load capacity/high-shock load capability Incredible compression loads that literally crush competing composite materials. •Self-lubricating design Provides maintenance-free operation and eliminates the need for costly lubrication systems. Reduces wear and extends operating life. Coefficients as low as 0.05 in dry applications and •Temperature resistant Operates flawlessly in temperatures ranging from cryogenic levels to a high of 300A°F (149C) • Dimensionally stable in fluids (water, corrosive liquids, and chemical solutions) Absorption...

Minuteman Twin Pillow Block Linear Rail Assembly Pre-assembled Shaft, Rail, and Matched Centerline ^ LM76SL Linear Bearing(s) — For "XXX" substitute "L" from standard length table, or for non-standard length (see example) — Guide bar diameter dimension in 1/16" increments (for example 10/16 = .625" diameter) — Pillow block style and quantity - Substitute "1", "2", or "3" etc. for the number of single bearings or "T", "T2", or "T3" etc. for the number of twin bearings per rail assembly 'Multiple bearings on an assembly will have matched centerline (H) dimensions. — "M" for LM76SL, Minuteman linear...