Used Okamoto Acc 52 Sa for sale (9,578)

Year of construction: 2016, condition: ready for operation (used), travel distance X-axis: 500 mm, travel distance Z-axis: 200 mm, spindle speed (max.): 3,500 rpm, table load: 200 kg, number of axes: 2, Surface grinding machine manufactured in 2016. This OKAMOTO ACC 52 SA features a grinding length of 500 mm and a grinding width of 200 mm, with a maximum table load of 200 kg. The hydraulic table feed rate reaches up to 27 m/min, and the spindle speed can go up to 3,500 rpm. If you are looking to get high-quality grinding capabilities, consider the OKAMOTO ACC 52 SA machine we have for sale. Contact us for further details. Nodpfx Anezwpt Esgslh * Grinding length: 500 mm* Grinding width: 200 mm* Maximum grinding height (table to spindle center): 350–397 mm* Magnetic chuck: 500 x 200 mm* Table load capacity: 200 kg* Hydraulic table feed: up to 27 m/min* Grinding spindle motor power: 1.5 kW* Standard grinding wheel: 225 x 19 x 50.8 mm Optional Accessories available

Condition: excellent (used), Year of construction: 2019, functionality: fully functional, OKAMOTO ACC-16*24SA1 Precision Surface Grinding Machine Nledpfxjzmhkns Angoh Okamoto Precision Surface Grinding Machine ----- Model ACC-16•24SA1 Automatic Wheelhead Approach, Retraction to Start Position, Automatic Dress Cycle with Wheel Wear Compensation, Shift Plunge Cycle--- ----- Grinding Capacity 16”x 24” Standard Accessories • Automatic Overhead Wheel Dresser • Touch Screen Controller with 10” Display With Compensation, including Diamond Tool • Vertical & Crossfeed Pulse Generator • Rapid Wheel head Retraction • Teach-Input Positioning • Load Meter for Grinding Wheel Motor • 5 HP Wheel Spindle Motor • Shift-Plunge Rough Grinding Cycle • Stainless Steel Wheel Guard • Selectable Rough/Fine Infeed Grinding Method • Leveling Bolts with Plates • Table Park for Safety • Necessary Tools & Tool Box • Stainless Steel Splash Guard • Installation and Training • Instruction Manual

Condition: good (used), Year of construction: 2001, functionality: fully functional, grinding length: 450 mm, grinding width: 150 mm, total height: 2,129 mm, total length: 1,940 mm, total width: 1,317 mm, workpiece weight (max.): 120 kg, grinding height: 510 mm, grinding wheel diameter: 205 mm, distance table to spindle center: 510 mm, table length: 510 mm, table load: 120 kg, type of input current: three-phase, table width: 150 mm, overall weight: 1,250 kg, grinding spindle motor power: 1,500 W, travel distance X-axis: 530 mm, travel distance Y-axis: 175 mm, rotational speed (max.): 2,400 rpm, grinding spindle speed: 2,400 rpm, input voltage: 400 V, Equipment: rotational speed infinitely variable, 2001 Okamoto ACC-450DXA Surface Grinder | 450 x 150mm Used 2001 Okamoto ACC-450DXA Hydraulic Surface Grinding Machine for Sale – 450 x 150mm Grinding Capacity – Automatic Grinding Cycle – Spare Grinding Wheels Included Manufacturer: Okamoto Model: ACC-450DXA Machine Type: Hydraulic Surface Grinder Year: 2001 Condition: Working Well Includes: Coolant Equipment Magnetic Chuck Cross Feed Digital Display Vertical Digital Display Wheel Guard Spare Grinding Wheels Machine Description Used 2001 Okamoto ACC-450DXA precision surface grinder available for sale. The Okamoto ACC-450DXA is a compact, high-quality hydraulic surface grinding machine designed for accurate flat and form grinding applications in precision engineering, toolrooms, mould and die shops and general manufacturing environments. The machine provides an approximate 450 x 150mm grindable surface, with 530mm longitudinal table travel and 175mm cross travel, making it particularly suitable for precision grinding of small and medium-sized components. The DXA version features an automatic grinding cycle, combining hydraulic table movement with controlled crossfeed and vertical grinding functions to provide repeatable production grinding while remaining straightforward to set and operate. This machine is supplied with a selection of spare grinding wheels. Nedpfoz Rqk Rsx Angjlh Main Specifications Manufacturer: Okamoto Model: ACC-450DXA Year: 2001 Machine Type: Precision Hydraulic Surface Grinder / Surface Grinding Machine Grinding Capacity Maximum Grindable Surface: Approx. 450 x 150mm Table Working Area: Approx. 510 x 150mm Longitudinal Travel: Approx. 530mm Cross Travel: Approx. 175mm Distance from Grinding Wheel to Table: Approx. 60–510mm Maximum Table Load: Approx. 120kg The generous longitudinal movement relative to the 450mm grinding length allows the wheel to clear the component during the grinding cycle. Grinding Wheel & Spindle Grinding Wheel Diameter: Approx. 205mm Grinding Wheel Peripheral Speed: Approx. 2,400m/min Grinding Spindle Motor: Approx. 1.5kW The spindle arrangement is designed for precision surface grinding where good finish, flatness and dimensional accuracy are required. Additional Drive Motors Hydraulic Pump Motor: Approx. 0.75kW Crossfeed Motor: Approx. 0.75kW Grinding Head Up/Down Motor: Approx. 0.4kW DXA Automatic Grinding Cycle The ACC-450DXA version is designed to provide an automatic grinding cycle, making it suitable for repetitive precision surface grinding operations. The DX-series design incorporates features aimed at both rough and finish grinding, including: Automatic grinding-cycle capability Hydraulic longitudinal table movement Powered crossfeed Powered vertical grinding-head movement Coarse and fine vertical feed Precision feed adjustment Robust saddle-type construction Hand-finished precision guideways Automatic lubrication system These features make the ACC-450DXA suitable for both one-off toolroom work and repetitive component grinding. Approximate Machine Dimensions Overall Length: Approx. 1,940mm Overall Width: Approx. 1,317mm Overall Height: Approx. 2,129mm Machine Weight: Approx. 1,250kg

Year of construction: 2012, condition: used, functionality: fully functional, OKAMOTO - ACC 64CA- 10 X: 800 mm, Y: 440 mm, Z: 522 mm Nedpezxri Ssfx Angelh

Condition: used, total height: 2,400 mm, total length: 3,500 mm, total width: 2,300 mm, Colour: Cream Nedpfx Aezubdwsngolh Empty weight: 2.500 kg - CE marking present: Yes - Drive system: CNC - Control system brand: Fanuc - X-axis travel [mm]: 750 - Z-axis travel [mm]: 340 - Table width [mm]: 600 - Table depth [mm]: 300 - Magnet width [mm]: 600 - Magnet depth [mm]: 300 - Max. grinding wheel diameter [mm]: 355 - Max. spindle speed [rpm]: 1500 - Options: Digital readout - Transport dimensions: 3500mm x 2300mm x 2400mm (l x w x h) - Transport weight [kg]: 2500kg - Transport packages [pcs.]: 3 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: like new (used), Year of construction: 2024, operating hours: 200 h, functionality: fully functional, grinding length: 600 mm, grinding width: 400 mm, workpiece weight (max.): 1,000 kg, grinding height: 430 mm, grinding wheel diameter: 405 mm, table load: 1,000 kg, grinding wheel width: 50 mm, spindle speed (max.): 2,500 rpm, spindle speed (min.): 500 rpm, grinding spindle motor power: 7,500 W, warranty duration: 12 months, input voltage: 400 V, Equipment: documentation/manual, rotational speed infinitely variable, First commissioning: 2024 Operating hours "grinding wheel in use": approx. 100 hours The machine will be completely inspected by the manufacturer OKAMOTO and delivered with an acceptance protocol for the geometry. Manufacturer's warranty: 12 months for delivery within the European Union and commissioning by T-Rade Service GmbH (commissioning optional in Germany: EUR 7,900, EU EUR 9,800) Design: Column feed Control: Fanuc Screen: Touchscreen Workshop programming: for flat, groove, and step grinding (optional) Conventional operation of the machine possible (manual operation) Automatic multiple plunge cuts Teach-in functions: vertical, dressing, and reversing points Folding dresser with 3 diamonds next to the magnetic clamping plate Automatic compensation of dressing amount Longitudinal guides: double prism, hand-scraped with thermally symmetrical behavior, PTFE coated Maximum table load: 1,000 kg Hydraulic table drive X-axis Electric servo table drive Z-axis Electric servo grinding spindle drive Y-axis Travel in longitudinal direction: 950 mm Travel in transverse direction: 440 mm Travel table-new wheel (Ø 355 mm): 522 mm Grinding wheel standard: Ø355x38 mm Grinding wheel Ø max.: 405 mm Grinding wheel width max.: 50 mm Grinding wheel bore: Ø 127 mm Grinding spindle drive power: 7.5 kW Grinding spindle speed, infinitely variable: 500-2500 rpm Leveling screws and support plates Operating/programming/maintenance manual, operating tool LED lamp Machine paint: Dark gray/silver structure Machine dimensions approx. L x W x H: 3,560 x 2,900 x 2,210 mm Weight approx.: 4,950 kg Connection value: 15 kVA Accessories: Folding dresser with automatic compensation Coolant flushing gun Flanges 1 piece Grinding wheels 1 piece Commissioning and training by OKAMOTO is mandatory for the warranty. Optionally available: Electro-permanent magnet, transverse pole: 800x400 mm, p=13 mm, extra charge EUR 9,000.00 Band filter tank: 180 liters, extra charge: EUR 9,000.00 All information is non-binding, subject to prior sale. The machines remain our property until full payment. Our general terms and conditions apply. Delivery: ex works Delivery date: upon agreement (approx. 8 weeks) Prices: plus VAT Payment terms: strictly net, 10% with order, 90% before shipment The price for the machine as stated is valid only in Germany. Other EU countries at an extra charge upon request. Nedpfxsz Hc Sds Angelh No export of the machine.

Condition: used, Year of construction: 2006, machine/vehicle number: 65126, Grinding area: 630x350 mm, grinding wheel diameter: 350 mm, magnetic clamping plate, size: 600x300 mm, with coolant system, fleece filter system and automatic depth feed. Nledpsz Nhqxefx Angoh

Condition: used, functionality: unexamined, machine/vehicle number: 68191, grinding length: 800 mm, type of input current: three-phase, input voltage: 400 V, Okamoto ACC-84DX surface grinding machine. Serial no. 68191, connection 3 x 400 V, 50 Hz, 8.5 kVA. Grinding length 800 mm. Magnetic clamping table, coolant supply with shut-off valve, splash guard, control panel with two digital displays, handwheel and fine feed adjustment. Nlsdoz A Ulhepfx Angjh Location: Homburg (Saar), Germany. Inspection by appointment only. Price on request, net plus VAT, ex works; dismantling and loading by arrangement. All information without guarantee.

Condition: used, Year of construction: 2001, functionality: fully functional, OKAMOTO ACC 64 DX Surface Grinding Machine Year: 2001 TBC Nedpszv Ef Usfx Angslh Servo Automatic Downfeed 600 x 400.0mm WALKER HAGOU MAGNET Electromagnetic chuck Paper coolant filtration system

Condition: good (used), Year of construction: 1989, functionality: fully functional, feed length X-axis: 650 mm, feed length Y-axis: 400 mm, feed length Z-axis: 230 mm, spindle speed (max.): 3,000 rpm, For sale is a surface grinding machine of the brand Okamoto, type PSG 52 UDX The machine is well-maintained and ready for immediate use Technical data: Year of manufacture: 1989 Grinding area: X-axis: 650 mm (manual) Z-axis: 230 mm Y-axis: 47 mm – 400 mm Max. height movement lower edge of new wheel (with ¯ 205 mm) min./max. - table) Grinding wheel ¯: Maximum ¯ 225 mm. Speed range: 3000 rpm (stepless speed control) Table feed: 0.3 – 25 m/min (hydraulic in X-axis) Table area ground: 550 x 200 mm Magnetic chuck: 500 x 200 mm (standard size) (Load incl. magnet max. 200 kg) Transport and loading can be arranged on request, for an additional charge, Europe-wide. Prices plus VAT Viewing possible by appointment. Contact us, our team looks forward to assisting you. Trade-in or exchange possible! Machinery purchase / sale Nljdpewnnbrjfx Angoh PURCHASE / SALE OF PRODUCTION & METALWORKING MACHINES AND MUCH MORE. Do you need a high-quality but affordable metalworking machine for your production? Or do you want to sell yours? For more information or ways to contact us, visit our website

Year of construction: 2013, condition: ready for operation (used), travel distance X-axis: 800 mm, travel distance Y-axis: 400 mm, overall weight: 3,000 kg, total width: 3,350 mm, total height: 1,800 mm, product length (max.): 2,180 mm, number of axes: 3, This 3-axis OKAMOTO ACC 84DX surface grinding machine was manufactured in 2013. It features a table size of 800 x 400 mm and a stone diameter of ø355 mm. With its robust design, this machine is ideal for precision grinding applications. If you are looking to get high-quality grinding capabilities, consider the OKAMOTO ACC 84DX machine we have for sale. Contact us for further details. Nlodpfxoztdz Ns Angeh • Stone = ø355 x 38 x ø127

Year of construction: 2018, condition: ready for operation (used), - USED - SURFACE GRINDING MACHINE MAX GRINDING LENGTH: 600 mm MAX GRINDING WIDTH: 400 mm LONGITUDINAL TRAVEL: 750 mm TRANSVERSAL TRAVEL: 340 mm 340 mm TABLE SIZE: 650 x 400 mm Nlsdpfx Aoyry R Ssngsh MAX ADMITTED LOAD: 420 Kg MAGNETIC CHUCK: 600 x 400 mm GRINDING WHEEL SIZE: 355 x 38 x 127 mm GRINDING WHEEL SPEED: 1500 rpm MOTOR POWER: 3,7 kW WEIGHT: 2900 Kg OVERALL DIMENSIONS: 2725 x 2205 x 1761 mm ACCESSORIES: PAPER FILTER

Condition: used, Year of construction: 1991, working area 225 mm table-size L:550 mm table-size B:200 mm sanding disc diameter 200mm mm magnetic plate size 500 mm weight of the machine ca. 1,8 t dimensions of the machine ca. 2000x1600x2100 m Nodpfjud Algex Angelh

Condition: reconditioned (used), Year of construction: 2006, functionality: fully functional, feed length X-axis: 750 mm, feed length Y-axis: 340 mm, feed length Z-axis: 525 mm, workpiece weight (max.): 420 kg, grinding height: 455 mm, grinding wheel diameter: 350 mm, distance table to spindle center: 455 mm, table length: 600 mm, table load: 420 kg, type of input current: AC, table width: 300 mm, grinding wheel width: 40 mm, spindle speed (max.): 1,500 rpm, overall weight: 2,500 kg, Precision grinding machine for flat surfaces "OKAMOTO mod. ACC-63DX BV" with viewer on the grinding wheel descent axis and on the table transversal axis. Nsdpfeu T N Igox Angelh

Condition: good (used), Year of construction: 2014, functionality: fully functional, Table surface: 850 x 400 mm Magnetic table: 800 x 400 x 105 mm Max. table travel (X x Y): 950 x 440 mm Max. workpiece weight: 700 kg (230 kg on the magnetic table) T-slots on the table: 3 pcs x 17 mm Distance between table and spindle center: 47,5 – 547,5 mm Grinding wheel dimensions: D355 x 38 x d127 mm Spindle speed: 1500 / 1800 rpm (50Hz / 60Hz) Spindle drive power: 3.7 kW / 4.0 kW Longitudinal travel: 3 – 25 m/min (hydraulic and stepless) Cross travel: 1 – 1000 mm/min Vertical feed rate: 1 – 1000 mm/min Minimum increment / feed amount: 0,0001 mm – 0,0002 mm Machine weight: 4000 kg Dimensions (L x W x H): 3310 x 2228 x 2710 mm Accessories / Equipment - Semi-automatic operation - Magnetic table 800 x 400 mm - Coolant system with magnetic separator - Paper band filter - Machine feet Nsdpfx Ajy T Nuwengolh - Digital display system for the infeed / increment - Built-in wheel dresser in the spindle head The machine is being sold due to company liquidation. It is in good condition and still under power in Hungary.

Condition: excellent (used), Year of construction: 2002, Grinding area: 550 x 200 mm Max. grinding height: 390 mm Grinding wheel dimensions: max. 225 x 20 mm Bore: 50.8 mm Speed: 2,880 rpm Max. table load: 200 kg Machine weight: 1,800 kg Nlsdpfx Anezi R Sgsgsh

Condition: used, Year of construction: 1995, grinding length 600 mm grinding width max. 320 mm workpiece height max. 500 mm magnetic clamping plate 300 x 605 mm horiz. table movement: longitudinal man. max. 750 mm horizontal table movement: cross max 340 mm sanding disc diameter 355 mm table load max. 420 kg Nlsdpfxszkv Ayj Angsh grinding wheel width 50 mm bore 127 mm spindle turning speed range 1500 U/min rapid traverse vertical 400 mm/min weight of the machine ca. 2500 kg dimensions of the machine ca. ca. 2800x2000x1800 mm

Year of construction: 2001, condition: ready for operation (used), travel distance X-axis: 530 mm, travel distance Y-axis: 175 mm, overall weight: 1,250 kg, total height: 2,129 mm, spindle motor power: 1,500 W, product length (max.): 1,940 mm, table load: 120 kg, table width: 1,317 mm, number of axes: 3, This 3s OKAMOTO ACC 450 DXA was manufactured in 2001. It features a grindable surface of 450 × 150 mm and a longitudinal travel of 530 mm, making it suitable for various grinding applications. With a maximum load capacity of 120 kg on the table, this machine offers robust performance. Consider the opportunity to buy this OKAMOTO ACC 450 DXA surface grinding machine. Contact us for further details. • Grinding table • Grindable surface: 450 × 150 mm • Distance spindle–table: 60–510 mm Nodsyiffgspfx Angslh • Max load on table: 120 kg • Wheel and spindle • Wheel diameter: 205 mm • Wheel peripheral speed: 2,400 m/min • Spindle motor power: 1.5 kW / 2P • Motors • Hydraulic pump motor: 0.75 kW / 4P • Cross feed motor: 0.75 kW / 3P • Headstock up/down motor: 0.4 kW

Condition: ready for operation (used), functionality: fully functional, grinding wheel diameter: 355 mm, spindle speed (max.): 1,500 rpm, travel distance X-axis: 750 mm, travel distance Z-axis: 340 mm, controller manufacturer: Fanuc, TECHNICAL DETAILS Travel range, X-axis: 750 mm Travel range, Z-axis: 340 mm Table width: 600 mm Table depth: 300 mm Magnet width: 600 mm Nlodpfxozuw Dmj Angeh Magnet depth: 300 mm Max. grinding wheel diameter: 355 mm Max. spindle speed: 1,500 rpm MACHINE DETAILS Drive system: CNC Control system: Fanuc DIMENSIONS & WEIGHT Dimensions (L x W x H): 3,500 x 2,300 x 2,400 mm Net weight: 2,500 kg Shipping packages: 3 units EQUIPMENT CE marking

Condition: not inspected (used), For sale is an Okamoto surface grinder type ACC-12.24DX The machine can not be tested by us, because it requires a 60 Hz connection. Visually the machine is in good condition new grinding wheel included in the offer. Technical data: Volt: 230/460 Freq.: 60 Hz phase: 3 Power: 7.5 KvA Control voltage AC: 100 V Control voltage DC: 12-24 V Clamping surface: 30*67 cm grinding wheel diameter: 30 cm Pitch circle diameter: 7.5 cm On request, for an additional charge, the machine can be loaded on truck and the transport can be organized Europe-wide. Prices plus value added tax Viewing by appointment possible. Contact us, our team is happy to help you. Trade-in or exchange possible! Machines purchase / sale PURCHASE / SALE OF PRODUCTION & METALWORKING MACHINES ETC. Do you need a high-quality but inexpensive metalworking machine for your production? Or do you want to sell yours? Nsdpfx Asnzhwwengelh For more information or to contact us, please visit our website

Condition: good (used), Year of construction: 2009, functionality: fully functional, The machine is fully operational and equipped with an MB CAS AM52 delivery table (short). In continuous use. Nljdpfoxcwb Ujx Angsh

Condition: as good as new (ex-display), Year of construction: 2020, operating hours: 200 h, functionality: fully functional, workpiece weight (max.): 150 kg, grinding length: 500 mm, grinding wheel diameter: 455 mm, grinding diameter: 300 mm, workpiece weight between centers: 150,000 g, type of input current: three-phase, workpiece diameter between centers: 500 mm, grinding wheel width: 75 mm, spindle speed (max.): 500 rpm, spindle speed (min.): 10 rpm, grinding spindle motor power: 7,500 W, overall weight: 4,600 kg, Demonstration CNC cylindrical grinding machine with automation setup Brand OKAMOTO Model OGM-350 P NCIII Year of manufacture 2020 Control: Fanuc Oi Model D Operating hours: approx. 200 hours Technical specifications Maximum swing diameter: 320 mm Maximum distance between centers: 500 mm Maximum workpiece diameter to be ground: 300 mm Maximum workpiece weight between centers: 150 kg Maximum workpiece weight: flange + chuck + workpiece: 40 kg Grinding wheel: Diameter x width x bore: 455 x 75 x 127 mm Nsdpfszn U S Isx Angslh Wheel speed: Continuously variable Circumferential speed: 45 m/sec Grinding headstock (x-axis) Maximum travel: 300 Swivel angle: Non-swivel Workpiece table (z-axis) Travel: 870 mm Swivel angle: 0 – 10° Workhead Fixed/Live Center Design MK 4 Taper Chuck Spindle Bore Diameter 20 mm Spindle Speed ​​10 – 500 rpm Swivel Angle: Non-Swivel Tailstock Tailstock Type: Manual Fine Taper Adjustment Quill Travel 30 mm MK 4 Taper Chuck Drive Power Grinding Wheel Drive 5.5 kW Total Power 20 kVA Dimensions/Weight Length x Width x Height approx. 3400 x 2330 x 1950 mm Machine Weight approx. 4,600 kg Standard Equipment: 2 Carbide Centers Full FANUC Keyboard with Radius Compensation for Creating ISO Programs Workshop Programming: Graphic Software for Grinding and Dressing Cycles with Teach-in Function GAP Eliminator Shoulder Positioning Constant Table coolant flush 3 color LED lamp Documentation Leveling screws and support plates Operating tool set Accessories Automation preparation Automatic door Automation interface Grinding wheel guard fully open when door is open Miscellaneous Signal lamp Tailstock with electric quill retraction 1 flange 1 grinding wheel Options upon request: Paper belt filter on request Clamping devices on request Commissioning and training on request (Commissioning by Okamoto is required for warranty purposes) Transport on request

Condition: used, functionality: fully functional, working width: 520 mm, Equipment: compressor, documentation/manual, Multimaster CAS 52-4-4 FSA consisting of 1. Four-pocket folding unit with flat-stack feeder 2. Four-pocket folding unit with angled roller table Nsdpfozwwfvjx Angslh Outfeed Compressor The machine can optionally be equipped with or without the second folding unit. The second folding unit can optionally be used for straight folding or cross folding. There is also the option of installing and commissioning it (this will be charged separately, and a functional guarantee will be provided).

Condition: new, Year of construction: 2025, machine/vehicle number: KK00050613, input frequency: 50 Hz, type of input current: three-phase, total length of planing tables: 2,250 mm, overall weight: 695 kg, chip removal: 5 mm, chip removal for surfacing (max.): 5 mm, number of planer blades: 4, planer shaft diameter: 120 mm, planing height: 240 mm, Equipment: motor brake, Holzkraft jointer and thickness planer minimax fs 52 TERSA, Planing width 520 mm, planing height 3 - 240 mm, Jointer table length 2,250 mm, 4-knife TERSA planing cutterhead, Motor 7 kW (9.5 hp); S6 5-meter connection cable 2.5 mm² with 16 Ah plug, complete with: simultaneously folding tables, common dust extraction hood for jointer and thickness planer D = 120 mm, thickness table adjustment via handwheel with integrated display, star-delta switch, auxiliary fence, Nledpsxn Suaefx Angsh CE and BG certified for wood dust. Order No.: 5503501 immediately available from Seevetal, Ex works, without transport, subject to prior sale.

Condition: reconditioned (used), Motor 5 kW electric height adjustment with digital display brake can be released electrically for knife change planer cutter shaft 520 mm manual feed speed 5-8-12-18 m/min start and stop buttons at front and rear planer table length 2250 x 540 mm Nljdpfx Aoy Hkzfjngeh manually adjustable fence with angle function sliding planer shaft guard