Solutions. ydraulics. We Manufacture. H y d r a u l i c s. Eaton Gear Pumps. h y d r a u l i c s. Series 26 Model Gear Pumps.

Transcription

1 H y d r a u l i c s ydraulics Eaton Gear Pumps h y d r a u l i c s Series 26 Model 26 Gear Pumps We Manufacture No Rev. November 1997 Quiet Operation Improved Efficiency Field Reversible Solutions S o l u t i o n s

2 Series 26 High Pressure Gear Pump Pressures to 35 PSI and flow to 24.1 GPM Quiet Operation The 13-tooth gears, versus 1 teeth in previous pumps, minimizes the flow ripple. This reduces noise as well as vibration. The improved trap reliefs not only increase power, they also help keep oil flowing smoothly to reduce noise. Improved Efficiency Improved bearing lubrication system uses inlet oil instead of high pressure oil, improving volumetric efficiency for more power output. The highly polished shaft and gears improve mechanical efficiency and reduce wear on these components, adding to the service life and reliability of the pump. The optimized trapped oil relief areas help reduce pressure ripple for quieter operation. This also decreases the input power requirements. Field Reversible The innovative new wear plate permits simple field reversibility of the pump direction. Simply open the pump, switch the drive gear and idler gear, reposition the plug and reassemble. No extra parts are needed. Interchangeability The Series 26 Gear Pump has been designed to retrofit equipment using the B1 and B2 Gear Pumps. Extra shafts, porting, and mounting configurations, as well as 13 available displacements, give you the choices you need for an easy conversion to this superior pump. Ordering Information Catalog Assemblies Cross Reference Standard catalog assemblies are built from high production preassigned part number and may be used to order the specific parts and are the most economical pump assemblies available standard assembly (see pages 1 13). The far right column in this series. The standard assembly order number is a lists the B1 or B2 pump replaced by the Series 26 pump. 2

3 General Specifications Rotation Mounting Flange Max. Continuous Pressure Max. Intermittent Pressure Minimum Speed at Continuous Pressure Maximum Rotating Torque at Pressure Maximum Continuous Operating Temperature Minimum Continuous Oil Viscocity Minimum Operating Temperature Field Reversible SAE A 2 Bolt 21 bar [3 PSI]* 24 bar [35 PSI]** 75 RPM 4 Nm [36 lb-in] 15 C [22 F] 5.7 cst [45 SUS] -29 C [-2 F] Maximum Inlet Vacuum at Operating Condition,8 bar Abs. [11.6 psi Abs.] Continuous - pump may be run continuously at these ratings. Intermittent - intermittent operation, 1% of every minute. * 3.6 cm 3 /rev. [1.87 in 3 /rev.] displacement max. continuous pressure is 19 bar [275 PSI]. ** 3.6 cm 3 /rev. [1.87 in 3 /rev.] displacement max. intermittent pressure is 224 bar [325 PSI]. For side load limits consult your Eaton representative. Performance Data Displacement 6,6 8,2 9,5 1,8 13,8 16,7 19,7 cm 3 /r [in 3 /r] [.4] [.5] [.58] [.66] [.84] [1.2] [1.2] Max. Intermittent Pressure bar [PSI] [35] [35] [35] [35] [35] [35] [35] Rated Speed (RPM) Output Flow at 27 bar [3 PSI] 24,3 29,6 35, 39, 5,5 54,7 61,9 and Rated Speed [6.4] [7.8] [9.2] [1.3] [13.3] [14.4] [16.3] LPM [GPM] Input Power at Rated Speed and 9,7 11,9 14,1 15,5 2, 22, 26,2 Cont. Pressure [13.] [15.9] [18.9] [2.8] [26.8] [29,4] [35.2] kw [HP] Displacement 22,5 24,3 25,2 27,7 29, 3,6 cm 3 /r [in 3 /r] [1.37] [1.48] [1.54] [1.69] [1.77] [1.87] Max. Intermittent Pressure bar [PSI] [35] [35] [35] [35] [34] [325] Rated Speed (RPM) Output Flow at 27 bar [3 PSI] 66,6 73, 76, 83,6 87,4 91,6 and Rated Speed [17.5] [19.2] [2.] [22.] [23.] [24.1] LPM [GPM] Input Power at Rated Speed and 27,3 3,5 31, 33,4 35,4 37,4 Cont. Pressure [36.6] [4.9] [41.6] [44.8] [47.4] [5.1] kw [HP] The performance data in the table above and the following graphs was collected using a mineral base oil with a viscosity of 133 SUS at 49 C [12 F]. 3

4 Performance Data 7 6,56 19,68 cm 3 /rev [ in 3 /rev] 13 [17] 6,56 cm 3 /rev [.4 in 3 /rev] 12 [16] Flow in L/min. 138 bar [2 PSI] [15] [1] [5] 19,7 [1.2] 16,7 [1.2] 13,8 [84] 1,8 [.66] 9.5 [.58] 8,2 [.5] 6,6 [.4] 11 [15] 1 [13] 9 [12] 8 [11] 7 [9] 6 [8] 5 [7] 4 [5] 3 [4] 2 [3] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 14 Bar [15 PSI] 69 Bar [1 PSI] 35 Bar [5 PSI] 1 [1.3] [] [17] 8,2 cm 3 /rev [.5 in 3 /rev] 26 [35] 9,51 cm 3 /rev [.58 in 3 /rev] 12 [16] 24 [32] 11 [15] 1 [13] 9 [12] 8 [11] 7 [9] 6 [8] 5 [7] 4 [5] 3 [4] 2 [3] 1 [1.3] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 14 Bar [15 PSI] 69 Bar [1 PSI] 35 Bar [5 PSI] 22 [29.5] 2 [27] 18 [24] 16 [21.5] 14 [19] 12 [16] 1 [13] 8 [11] 6 [8] 4 [5] 2 [3] [2 138 Bar 14 Bar Bar 35 Bar [3 PSI] PSI] [25 [15 Bar [5 PSI] PSI] PSI] 69 Bar [1 PSI]

5 Performance Data 26 [35] 1,82 cm 3 /rev [.66 in 3 /rev] 26 [35] 13,78 cm 3 /rev [.84 in 3 /rev] 24 [32] 24 [32] 22 [29.5] 22 [29.5] 2 [27] 2 [27] 18 [24] 16 [21.5] 14 [19] 12 [16] 1 [13] 8 [11] 6 [8] 4 [5] 2 [3] Bar Bar 172 Bar Bar [1 Bar [5 [3 [15 Bar 14 [25 PSI] PSI] PSI] PSI] [2 PSI] PSI] 18 [24] 16 [21.5] 14 [19] 12 [16] 1 [13] 8 [11] 6 [8] 4 [5] 2 [3] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 184 Bar [15] 69 Bar [1 PSI] 35 Bar [5 PSI] [37.5] 16,73 cm 3 /rev [1.2 in 3 /rev] 28 [37.5] 19,68 cm 3 /rev [1.2 in 3 /rev] 26 [35] 26 [35] 24 [32] 22 [29.5] 2 [27] 18 [24] 16 [21.5] 14 [19] 12 [16] 1 [13] 8 [11] 6 [5] 4 [4] 2 [3] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 14 Bar [15 PSI] 69 Bar [1 PSI] 35 Bar [5 PSI] 24 [32] 22 [29.5] 2 [27] 18 [24] 16 [21.5] 14 [19] 12 [16] 1 [13] 8 [11] 6 [5] 4 [4] 2 [3] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 14 Bar [15 PSI] 69 Bar [1 PSI] 35 Bar [5 PSI]

6 Performance Data 22,47 3,67 cm 3 /rev [ in 3 /rev] 3,6 [1.87] 9 29, [1.77] 27,7 [1.69] 28 [37.5] 26 [35] 22,47 cm 3 /rev [1.37 in 3 /rev] Flow in L/min. 138 bar [2 PSI] [2] [15] [1] [5] 25,2 [1.54] 24,3 [1.48] 22,5 [1.37] 24 [32] 22 [29.5] 2 [27] 18 [24] 16 [21] 14 [19] 12 [16] 1 [13] 8 [11] 6 [5] 4 [4] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 14 Bar [15 PSI] 69 Bar [1 PSI] 35 Bar [5 PSI] 1 2 [2.7] [] [43] 24,27 cm 3 /rev [1.48 in 3 /rev] 32,84 [44] 25,56 cm 3 /rev [1.54 in 3 /rev] 3 [4] 28 [37.5] 29,84 [4] 26 [35] 26,86 [36] 24 [32] 22 [29.5] 2 [27] 18 [24] 16 [21] 14 [19] 12 [16] 1 [13] 8 [11] 6 [5] 4 [4] 2 [3] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 14 Bar [15 PSI] 69 Bar [1 PSI] 35 Bar [5 PSI] 23,87 [32] 2,89 [28] 17,9 [24] 14,92 [2] 11,94 [16] 8,95 [12] 5,97 [8] 2,98 [4] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 14 Bar [15 PSI] 69 Bar [1 PSI] 35 Bar [5 PSI]

7 Performance Data 4 [54] 27,72 cm 3 /rev [1.69 in 3 /rev] 4 [54] 29,3 cm 3 /rev [1.77 in 3 /rev] 4 [54] 3,67 cm 3 /rev [1.87 in 3 /rev] 38 [51] 38 [51] 38 [51] 36 [48] 34 [45.5] 32 [43] 3 [4] 28 [37.5] 26 [35] 24 [32] 22 [29.5] 2 [27] 18 [24] 16 [21] 14 [19] 12 [16] 1 [13] 8 [11] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 14 Bar [15 PSI] 69 Bar [1 PSI] 36 [48] 34 [45.5] 32 [43] 3 [4] 28 [37.5] 26 [35] 24 [32] 22 [29.5] 2 [27] 18 [24] 16 [21] 14 [19] 12 [16] 1 [13] 8 [11] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 14 Bar [15 PSI] 69 Bar [1 PSI] 36 [48] 34 [45.5] 32 [43] 3 [4] 28 [37.5] 26 [35] 24 [32] 22 [29.5] 2 [27] 18 [24] 16 [21] 14 [19] 12 [16] 1 [13] 8 [11] 27 Bar [3 PSI] 172 Bar [25 PSI] 138 Bar [2 PSI] 14 Bar [15 PSI] 69 Bar [1 PSI] 6 [5] 4 [4] 35 Bar [5 PSI] 6 [5] 4 [4] 35 Bar [5 PSI] 6 [5] 4 [4] 35 Bar [5 PSI] 2 [3] 2 [3] 2 [3]

8 Standard Catalog Assemblies Dimensions 25.9 [1.2] C L 21.1 [.83] 15. [.59] 6.4 [.25] 13. [5.12] 16.4 [4.19] 18 [.71] Suction Port* Side Porting Suction Port* Rear Porting 46.2 [1.82] 92.5 [3.64] Driveshaft Centerline 18 [.71] Pressure Port* Rear Porting Pressure Port* Side Porting Left Hand Rotation Shown * Suction Port 1 5/16-12 UN-2B, SAE 'O' RING PORT Pressure Port 7/8-14 UNF-2B, SAE 'O' RING PORT 2X Dim A Dim B See Shaft Drawing Dia ±.3 [3.249 ±.1] 2X Dia ±.13 [.455 ±.5] C L 47.6 [1.88] 83.3 [3.28] Model Displacement (cm 3 /r [in 3 /r]) 6.6 [.4] 8.2 [.5] 9.5 [.58] 1.8 [.66] 13.8 [.84] 16.7 [1.2] 19.7 [1.2] Dimension A (mm [in.]) 72.6 [2.86] 74.3 [2.93] 75.9 [2.99] 77.5 [3.5] 8.7 [3.18] 83.9 [3.3] 87.1 [3.43] Dimension B (mm [in.]) 93.2 [3.67] 94.9 [3.74] 96.5 [3.8] 98.1 [3.86] 11.3 [3.99] 14.5 [4.11] 17.7 [4.24] Model Displacement (cm 3 /r [in 3 /r]) 22.5 [1.37] 24.3 [1.48] 25.2 [1.54] 27.7 [1.69] 29. [1.77] 3.6 [1.87] Dimension A (mm [in.]) 9.3 [3.56] 92.7 [3.65] 93.5 [3.68] 96.7 [3.81] 98.6 [3.88] 99.9 [3.93] Dimension B (mm [in.]) 11.9 [4.37] [4.46] [4.49] [4.62] [4.69] 12.5 [4.74] 5/8 Inch 9 Tooth Spline Maximum Input Torque 62 Nm [55 lb-in] 3/4 Inch 11 Tooth Spline Maximum Input Torque 119 Nm [15 lb-in] 3/4 Inch Straight Key Maximum Input Torque 113 Nm [1 lb-in] 5/8 Inch Straight Key Maximum Input Torque 56 Nm [5 lb-in] 31.8 [1.25] 31.7 [1.25] 31.7 [1.25] 4.8 [.19] Key ±.38 [.186 ±.15] 31.8 [1.25] 23.9 [.94] 17.4 [.68] 4.8 [.19] Key 3.94±.3 [.155±.1] 9 Tooth 16/32 DP 3 Involute Flat Root Class 1 Side Fit Spline SAE J498b 22.4 [.88] Min Full Spline 11 Tooth 16/32 DP 3 Involute Flat Root Class 1 Side Fit Spline SAE J498b 22.2 [.88] Full Depth 21.1 ±.1 [.827 ±.4] Dia ±.3 [.7499 ±.1] 17.6±.13 [.693±.5] Dia ±.3 [.624±.1] All dimensions given in mm [in.]. 8

9 Component Parts Dimensions 15. [.59] 6.4 [.25] 13. [5.12] 16.4 [4.19] Front Plate SAE A 2 Bolt Flange Used on all Standard Catalog Assemblies Dia ±.3 [3.249 ±.1] 47.6 [1.88] 83.3 [3.28] 3.4 [1.2] 2X Dia ±.13 [.455 ±.5] C L Body Used on Single and Multiple Pumps Dim A Model Displacement (cm 3 /r [in 3 /r]) 6.6 [.4] 8.2 [.5] 9.5 [.58] 1.8 [.66] 13.8 [.84] 16.7 [1.2] 19.7 [1.2] Dimension A (mm [in.]) 14.4 [.57] 16.3 [.64] 17.7 [.7 ] 19.5 [.77] 22.7 [.89] 25.9 [1.2] 29.1 [1.15] Model Displacement (cm 3 /r [in 3 /r]) 22.5 [1.37] 24.3 [1.48] 25.2 [1.54] 27.7 [1.69] 29. [1.77] 3.6 [1.87] Dimension A (mm [in.]) 32.3 [1.27] 34.7 [1.36] 35.5 [1.4] 38.7 [1.52] 4.3 [1.59] 41.9 [1.65] 25.9 [1.2] C L 21.1 [.83] Backplate Used on Single and Multiple Pumps 18 [.71] Suction Port* Side Porting Suction Port* Rear Porting 46.2 [1.82] Driveshaft Centerline 18 [.71] Pressure Port** Rear Porting Pressure Port** Side Porting 27.7 [1.9] [3.64] [1.9] Left Hand Rotation Shown * Suction Port 1 5/16-12 UN-2B, SAE 'O' RING PORT ** Pressure Port 7/8-14 UNF-2B, SAE 'O' RING PORT All dimensions given in mm [in.]. 9

10 Standard Catalog Assemblies Order Numbers Model 261 6,6 cm 3 /r [.4 in 3 /r] Displacement 261-RZG 261-LZG 5/8 Keyed Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 243-RZA/LZA 261-RZH 261-LZH 5/8 Keyed Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 243-RZC/LZD 261-RZJ 261-LZJ 5/8 9 T Spline Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 243-RZB/LZA 261-RZK 261-LZK 5/8 9 T Spline Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 243-RZD/LZE Model 262 8,2 cm 3 /r [.5 in 3 /r] Displacement 262-RZA 262-LZA 3/4 11T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 253-RSA/LSA 262-RZB 262-LZB 3/4 11T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 253-RSB/LSB 262-RZC 262-LZC 3/4 Keyed Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 253-RSC/LSC 262-RZD 262-LZD 3/4 Keyed Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 253-RSD/LSD 262-RZE 262-LZE 5/8 9 T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 253-RSE/LSE 262-RZF 262-LZF 5/8 9 T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 253-RSF/LSF 262-RZG 262-LZG 5/8 Keyed Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2431-RZC/LZA 262-RZH 262-LZH 5/8 Keyed Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2431-RZG/LZG 262-RZJ 262-LZJ 5/8 9 T Spline Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2431-RZD/LZB 262-RZK 262-LZK 5/8 9 T Spline Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2431-RZH/LZH Model 263 9,5 cm 3 /r [.58 in 3 /r] Displacement 263-RZG 263-LZG 5/8 Keyed Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2432-RZB/LZB 263-RZH 263-LZH 5/8 Keyed Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2432-RZC/LZD 263-RZJ 263-LZJ 5/8 9 T Spline Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2432-RZA/LZA 263-RZK 263-LZK 5/8 9 T Spline Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2432-RZD/LZE Model 264 1,8 cm 3 /r [.66 in 3 /r] Displacement 264-RZA 264-LZA 3/4 11T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2531-RSA/LSA 264-RZB 264-LZB 3/4 11T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2531-RSB/LSB 264-RZC 264-LZC 3/4 Keyed Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2531-RSC/LSC 264-RZD 264-LZD 3/4 Keyed Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2531-RSD/LSD 264-RZE 264-LZE 5/8 9 T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2531-RSE/LSE 264-RZF 264-LZF 5/8 9 T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2531-RSF/LSF 264-RZG 264-LZG 5/8 Keyed Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2433-RZB/LZB 264-RZH 264-LZH 5/8 Keyed Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2433-RZE/LZF 264-RZJ 264-LZJ 5/8 9 T Spline Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2433-RZD/LZA 264-RZK 264-LZK 5/8 9 T Spline Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2433-RZF/LZG 1

11 Model ,8 cm 3 /r [.84 in 3 /r] Displacement 265-RZA 265-LZA 3/4 11T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2532-RSA/LSA 265-RZB 265-LZB 3/4 11T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2532-RSB/LSB 265-RZC 265-LZC 3/4 Keyed Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2532-RSC/LSC 265-RZD 265-LZD 3/4 Keyed Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2532-RSD/LSD 265-RZE 265-LZE 5/8 9 T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2532-RSE/LSE 265-RZF 265-LZF 5/8 9 T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2532-RSF/LSF 265-RZG 265-LZG 5/8 Keyed Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2434-RZC/LZA 265-RZH 265-LZH 5/8 Keyed Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2434-RZG/LZF 265-RZJ 265-LZJ 5/8 9 T Spline Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2434-RZD/LZB 265-RZK 265-LZK 5/8 9 T Spline Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2434-RZH/LZG Model ,7 cm 3 /r [1.2 in 3 /r] Displacement 266-RZA 266-LZA 3/4 11T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2533-RSA/LSA 266-RZB 266-LZB 3/4 11T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2533-RSB/LSB 266-RZC 266-LZC 3/4 Keyed Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2533-RSC/LSC 266-RZD 266-LZD 3/4 Keyed Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2533-RSD/LSD 266-RZE 266-LZE 5/8 9 T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2533-RSE/LSE 266-RZF 266-LZF 5/8 9 T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2533-RSF/LSF 266-RZG 266-LZG 5/8 Keyed Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2435-RZC/LZA 266-RZH 266-LZH 5/8 Keyed Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2435-RZG/-LZF 266-RZJ 266-LZJ 5/8 9 T Spline Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2435-RZD/LZB 266-RZK 266-LZK 5/8 9 T Spline Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2435-RZH/LZG Model ,7 cm 3 /r [1.2 in 3 /r] Displacement 267-RZA 267-LZA 3/4 11T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2534-RSA/LSA 267-RZB 267-LZB 3/4 11T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2534-RSB/LSB 267-RZC 267-LZC 3/4 Keyed Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2534-RSC/LSC 267-RZD 267-LZD 3/4 Keyed Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2534-RSD/LSD 267-RZE 267-LZE *5/8 9 T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2534-RSE/LSE 267-RZF 267-LZF *5/8 9 T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2534-RSF/LSF 267-RZG 267-LZG **5/8 Keyed Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2436-RZA/LZA 267-RZH 267-LZH **5/8 Keyed Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2436-RZE/LZF 267-RZJ 267-LZJ *5/8 9 T Spline Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2436-RZD/LZB 267-RZK 267-LZK *5/8 9 T Spline Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2436-RZF/LZG * 5/8 9 T Spline has a maximum allowable input torque of 62 Nm [55 lb-in]. ** 5/8 Keyed shaft has a maximum allowable input torque of 56 Nm [5 lb-in]. 11

12 Standard Catalog Assemblies Order Numbers Model ,5 cm 3 /r [1.37 in 3 /r] Displacement 268-RZA 268-LZA 3/4 11T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2535-RSA/LSA 268-RZB 268-LZB 3/4 11T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2535-RSB/LSB 268-RZC 268-LZC 3/4 Keyed Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2535-RSC/LSC 268-RZD 268-LZD 3/4 Keyed Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2535-RSD/LSD 268-RZE 268-LZE *5/8 9 T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2535-RSE/LSE 268-RZF 268-LZF *5/8 9 T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2535-RSF/LSF Model ,3 cm 3 /r [1.48 in 3 /r] Displacement 269-RZG 269-LZG **5/8 Keyed Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2437-RZC/LZA 269-RZH 269-LZH **5/8 Keyed Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2437-RZG/LZF 269-RZJ 269-LZJ *5/8 9 T Spline Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2437-RZD/LZB 269-RZK 269-LZK *5/8 9 T Spline Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2437-RZH/LZG Model ,2 cm 3 /r [1.54 in 3 /r] Displacement 261-RZA 261-LZA 3/4 11T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2536-RSA/LSA 261-RZB 261-LZB 3/4 11T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2536-RSB/LSB 261-RZC 261-LZC 3/4 Keyed Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2536-RSC/LSC 261-RZD 261-LZD 3/4 Keyed Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2536-RSD/LSD 261-RZE 261-LZE *5/8 9 T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2536-RSE/LSE 261-RZF 261-LZF *5/8 9 T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2536-RSF/LSF Model ,7 cm 3 /r [1.69 in 3 /r] Displacement 2611-RZA 2611-LZA 3/4 11T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2537-RSA/LSA 2611-RZB 2611-LZB 3/4 11T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2537-RSB/LSB 2611-RZC 2611-LZC 3/4 Keyed Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2537-RSC/LSC 2611-RZD 2611-LZD 3/4 Keyed Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2537-RSD/LSD 2611-RZE 2611-LZE *5/8 9 T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2537-RSE/LSE 2611-RZF 2611-LZF *5/8 9 T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2537-RSF/LSF * 5/8 9 T Spline has a maximum allowable input torque of 62 Nm [55 lb-in]. ** 5/8 Keyed shaft has a maximum allowable input torque of 56 Nm [5 lb-in]. 12

13 Model , cm 3 /r [1.77 in 3 /r] Displacement 2612-RZG 2612-LZG **5/8 Keyed Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2438-RZA/LZA 2612-RZH 2612-LZH **5/8 Keyed Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2438-RZE/LZF 2612-RZJ 2612-LZJ *5/8 9 T Spline Side 7/8-14 UNF-2B 1-1/16-12 UN-2B 2438-RZD/LZB 2612-RZK 2612-LZK *5/8 9 T Spline Rear 7/8-14 UNF-2B 1-1/16-12 UN-2B 2438-RZF/LZG Model ,6 cm 3 /r [1.87 in 3 /r] Displacement 2613-RZA 2613-LZA 3/4 11T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2538-RZA/LZA 2613-RZB 2613-LZB 3/4 11T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2538-RZB/LZB 2613-RZC 2613-LZC 3/4 Keyed Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2538-RZC/LZC 2613-RZD 2613-LZD 3/4 Keyed Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2538-RZD/LZD 2613-RZE 2613-LZE *5/8 9 T Spline Side 7/8-14 UNF-2B 1-5/16-12 UN-2B 2538-RZE/LZE 2613-RZF 2613-LZF *5/8 9 T Spline Rear 7/8-14 UNF-2B 1-5/16-12 UN-2B 2538-RZF/LZF * 5/8 9 T Spline has a maximum allowable input torque of 62 Nm [55 lb-in]. ** 5/8 Keyed shaft has a maximum allowable input torque of 56 Nm [5 lb-in]. 13

14 Optional Configurations Single Gear Pump The Series 26 Gear Pump components can be assembled into many optional configurations. The versatile design allows you to assemble a pump to meet your specific needs. Single Gear Pump with Tandem Backplate Double Gear Pump with Common Suction Port Model codes for single and multiple pumps along with the component part dimension drawings are given on the following pages. Double Gear Pump with Tandem Backplate Triple Gear Pump with Two Suction Ports Triple Gear Pump with Two Suction Ports and Tandem Backplate Single Gear Pump with Relief Valve Single Gear Pump with Flow Divider and Relief Valve Single Gear Pump with Tandem Flow Divider Backplate Double Gear Pump with Relief Valve Double Gear Pump with Flow Divider and Relief Valve Double Gear Pump with Tandem Flow Divider Backplate Triple Gear Pump with Two Suction Ports and Relief Valve Triple Gear Pump with Two Suction Ports, Flow Divider and Relief Valve Triple Gear Pump with Two Suction Ports and Tandem Flow Divider Backplate 14

15 Component Parts Dimensions 15. [.59] 6.4 [.25] 13. [5.12] 16.4 [4.19] Front Plate SAE A 2 Bolt Flange Used on all Standard Catalog Assemblies Dia ±.3 [3.249 ±.1] 47.6 [1.88] 83.3 [3.28] 3.4 [1.2] 2X Dia ±.13 [.455 ±.5] C L Body Used on Single and Multiple Pumps Dim A Model Displacement (cm 3 /r [in 3 /r]) 6.6 [.4] 8.2 [.5] 9.5 [.58] 1.8 [.66] 13.8 [.84] 16.7 [1.2] 19.7 [1.2] Dimension A (mm [in.]) 14.4 [.57] 16.3 [.64] 17.7 [.7 ] 19.5 [.77] 22.7 [.89] 25.9 [1.2] 29.1 [1.15] Model Displacement (cm 3 /r [in 3 /r]) 22.5 [1.37] 24.3 [1.48] 25.2 [1.54] 27.7 [1.69] 29. [1.77] 3.6 [1.87] Dimension A (mm [in.]) 32.3 [1.27] 34.7 [1.36] 35.5 [1.4] 38.7 [1.52] 4.3 [1.59] 41.9 [1.65] 25.9 [1.2] C L 21.1 [.83] Backplate Used on Single and Multiple Pumps All dimensions given in mm [in.] 18 [.71] Suction Port* Side Porting Suction Port* Rear Porting 46.2 [1.82] 92.5 [3.64] Driveshaft Centerline 18 [.71] Pressure Port** Rear Porting Pressure Port** Side Porting Left Hand Rotation Shown * Suction Port 1 5/16-12 UN-2B, SAE 'O' RING PORT ** Pressure Port 7/8-14 UNF-2B, SAE 'O' RING PORT 48.3 [1.9] 27.7 [1.9] 15

16 Component Parts Dimensions Flow Divider Backplate Used on Single and Multiple Pumps 63.8 [2.51] *** Secondary Pressure Port Rear Porting *** Secondary Pressure Port Side Porting 1.3 [.5] 38.1 [1.5] ** Priority Pressure Port Side Porting ** Priority Pressure Port Rear Porting 19.3 [.76] 48.8 [1.92] C L 3.2 [1.19] 55.1 [2.17] 9.9 [3.58] Suction Port* Rear Porting Suction Port* Side Porting Relief Valve 18 [.71] 58.2 [2.29] Driveshaft Centerline Right Hand Rotation Shown * Suction Port 1 5/16-12 SAE UN-2B, SAE 'O' RING PORT ** Priority Pressure Port 3/4-16 SAE UN-2B, SAE 'O' RING PORT *** Secondary Pressure Port 7/8-14 SAE UNF-2B, SAE 'O' RING PORT Optional Hex Plug (No Relief Valve) 79.8 [3.14] 45.5 [1.79] 7.1 [2.76] Relief Valve Backplate Used on Single and Multiple Pumps 18.1 [.71] 11.7 [.46] C L 66 [2.6] Relief Valve 21.8 [.86] Relief Valve External Drain 7/8-14 SAE Driveshaft Centerline 58.5 [2.31] 39.1 [1.54] 16 ** Pressure Port Side Porting ** Pressure Port Rear Porting 21.1 [.83] 47.8 [1.88] 25.9 [1.2] 95.5 [3.76] Suction Port* Side Porting Suction Port* Rear Porting Right Hand Rotation Shown * Suction Port 1 1/16-12 SAE UN-2B, SAE 'O' RING PORT ** Pressure Port 7/8-14 SAE UNF-2B, SAE 'O' RING PORT 27.7 [1.9] 52.3 [2.6] All dimensions given in mm [in.]

17 Component Parts Dimensions Tandem Backplate Used on Single and Multiple Pumps Accepts Eaton 242 Series Gear pump; SAE AA 2 Bolt Flange See Model Code for Output Shaft Options 82.5 [3.25] C L 2X 3/ [.71] Driveshaft Centerline 7/8-14 SAE UNF-2B, SAE 'O' RING PRESSURE PORT 46.2 [1.82] 92.5 [3.64] 1 1/16-12 SAE UN-2B, 'O' RING SUCTION PORT 5.8 [2.] 2.8 [.82] Right Hand Rotation Shown Flow Divider Tandem Backplate Used on Single and Multiple Pumps Accepts Eaton 242 Series Gear pump; SAE AA 2 Bolt Flange 2X 3/8-16 See Model Code for Output Shaft Options 39 C L [3.25] 63.8 [2.51] 83.3 [3.28] B A 18 [.71] Driveshaft Centerline 1 1/16-12 SAE UN-2B, 'O' RING SUCTION PORT 7/8-14 SAE UNF-2B, SAE 'O' RING SECONDARY PRESSURE PORT [1.49] 5.1 [.2] 48.7 [1.94] 3/4-16 SAE UN-2B, 'O' RING PRIORITY PRESURE PORT 47.8 [1.88] 73.9 [2.91] 25.7 [1.1] Right Hand Rotation Shown All dimensions given in mm [in.] 17

18 Component Parts Dimensions Adaptor Plate Used on Multiple Pumps C L 18.1 [.71] Driveshaft Centerline 7/8-14 SAE UNF-2B, SAE 'O' RING PRESSURE PORT 1 5/8-12 SAE UN-2B, 'O' RING SUCTION PORT 46.2 [1.82] Right Hand Rotation Shown 62.7 [2.47] 48.3 [1.9] 5/8 Inch 9 Tooth Spline Maximum Input Torque 62 Nm [55 lb-in] 3/4 Inch 11 Tooth Spline Maximum Input Torque 119 Nm [15 lb-in] 3/4 Inch Straight Key Maximum Input Torque 113 Nm [1 lb-in] 31.8 [1.25] 11 Tooth 16/32 DP 3 Involute Flat Root Class 1 Side Fit Spline SAE J498b 22.2 [.88] Full Depth 31.7 [1.25] 4.8 [.19] Key ±.38 [.186 ±.15] 9 Tooth 16/32 DP 3 Involute Flat Root Class 1 Side Fit Spline SAE J498b 22.4 [.88] Min Full Spline 31.7 [1.25] 21.1 ±.1 [.827 ±.4] Dia ±.3 [.7499 ±.1] All dimensions given in mm [in.] * Multiple pump input torque limitations: the total torque for multiple pump displacements and pressure combinations cannot exceed the maximum input torque rating of the shaft. The proper formula is Pressure times Displacement divided by

19 Model Codes-Single Series 26 Gear Pumps can be ordered by using the following Model Code. A twenty-four digit coding system has been designed to identify the features presently available on single gear pumps. The characters and their relative positions within the code identify specific features. Use the Model Code Matrix as an aid when assembling the model code for the pump with the features you desire. It may be helpful to photocopy the matrix and write the numbers and letters into to the boxes as you select features. All twenty-four digits of the code must be submitted when ordering. Model Code Matrix Series 26 Single Pumps Position Model Code A C N A A Position 1, 2, 3 Code Title ACN = Series 26 Gear Pump Single Unit Position 4 Unit Type A = Plain B = Flow Divider with/without Relief Valve (Pos ) C = Relief Valve Position 5 Input Rotation (viewed from input shaft end) L = Left-Hand Rotation CCW R = Right-Hand Rotation CW Position 6, 7 Displacement (cm 3 /r [in 3 /r]) 1 = 6.6 [.4] 2 = 8.2 [.5] 3 = 9.5 [.58] 4 = 1.8 [.66] 5 = 13.8 [.84] 6 = 16.7 [1.2] 7 = 19.7 [1.2] 8 = 22.5 [1.37] 9 = 24.3 [1.48] 1 = 25.2 [1.54] 11 = 27.7 [1.69] 12 = 29. [1.77] 13 = 3.6 [1.87] Position 8, 9 Input Shaft AA = 5/8 Inch Dia. 9 Tooth Spline 16/32 Pitch Shaft Extension 31.8 [1.25] AD = 5/8 Inch Dia. Straight Keyed, Keyway 4.1 X 18.3 [.16 X.72] Shaft Extension 31.8 [1.25] Position 1 Mounting Features A = SAE 2-Bolt A Flange, Series 82-2 Position 11 Auxiliary Mounting Features = No Rear Mounting Position 12, 13 Ports, Sizes and Location - Backplate 3 = Suction Port UN-2B SAE O RING PORT; Pressure Port UNF-2B SAE O RING Port Accepts Fittings Per SAE J Side Ports 4 = Suction Port UN-2B SAE O RING Port; Pressure Port UNF-2B SAE O RING Port Accepts Fittings Per SAE J Rear Ports Position 14, 15 Priority Flow Divider Setting (LPM [GPM]) = No Flow Setting Position 16, 17 Relief Valve Full Flow Setting (bar [PSI]) = No Relief Valve Setting Position 18 Test Data = Generic Position 19, 2 Special Features = No Special Features Position 21, 22 Paint = No Paint Position 23 Identification = Standard Position 24 Design Code A = A 19

20 Model Codes-Multiple Series 26 Gear Pumps can be ordered by using the following Model Code. A twenty-four digit coding system has been designed to identify the features presently available on single gear pumps. The characters and their relative positions within the code identify specific features. Use the Model Code Matrix as an aid when assembling the model code for the pump with the features you desire. It may be helpful to photocopy the matrix and write the numbers and letters into to the boxes as you select features. All twenty-four digits of the code must be submitted when ordering. Model Code Matrix Series 26 Multiple Pumps Position Model Code ACM ACD Position 1, 2, 3 Code Title ACN = Series 26 Gear Pump Multiple Unit Position 4 Unit Type A = Plain Position 5 Input Rotation (viewed from input shaft end) L = Left-Hand Rotation CCW R = Right-Hand Rotation CW Position 6, 7 Displacement (cm 3 /r [in 3 /r]) Front 1 = 6.6 [.4] 2 = 8.2 [.5] 3 = 9.5 [.58] 4 = 1.8 [.66] 5 = 13.8 [.84] 6 = 16.7 [1.2] 7 = 19.7 [1.2] 8 = 22.5 [1.37] 9 = 24.3 [1.48] 1 = 25.2 [1.54] 11 = 27.7 [1.69] 12 = 29. [1.77] 13 = 3.6 [1.87] Position 8, 9 Displacement (cm 3 /r [in 3 /r]) Ctr. Triple Only 1 = 6.6 [.4] 2 = 8.2 [.5] 3 = 9.5 [.58] 4 = 1.8 [.66] 5 = 13.8 [.84] 6 = 16.7 [1.2] 7 = 19.7 [1.2] 8 = 22.5 [1.37] 9 = 24.3 [1.48] 1 = 25.2 [1.54] 11 = 27.7 [1.69] 12 = 29. [1.77] 13 = 3.6 [1.87] 99 = No Center Displacement Position 1, 11 Displacement (cm 3 /r [in 3 /r]) Rear 1 = 6.6 [.4] 2 = 8.2 [.5] 3 = 9.5 [.58] 4 = 1.8 [.66] 5 = 13.8 [.84] 6 = 16.7 [1.2] 7 = 19.7 [1.2] 8 = 22.5 [1.37] 9 = 24.3 [1.48] 1 = 25.2 [1.54] 11 = 27.7 [1.69] 12 = 29. [1.77] 13 = 3.6 [1.87] Position 12, 13 Input Shaft AA = 5/8 Inch Dia. 9 Tooth Spline 16/32 Pitch Shaft Extension 31.8 [1.25] AB = 3/4 Inch Dia. 11 Tooth Spline 16/32 Pitch Shaft Extension 31.8 [1.25] AC = 3/4 Inch Dia. Straight Keyed, Keyway 4.8 x 25.4 [.19 x 1.] Shaft Extension 31.8 [1.25] AD = 5/8 Inch Dia. Straight Keyed, Keyway 4.1 X 18.3 [.16 X.72] Shaft Extension 31.8 [1.25] 2

21 Model Codes-Multiple (Cont.) Model Code Matrix Series 26 Multiple Pumps Position Model Code ACM ACD Position 14, 15 Front Adaptor Ports 1 = Suction Port 1-5/8 12 UN-2B SAE O-ring Port; Pressure Port 7/8 14 UNF-2B SAE O-ring Port (Common Suction Port) 2 = Suction Port 1-5/16 12 UN-2B SAE O-ring Port; Pressure Port 7/8 14 UNF-2B SAE O-ring Port (Isolated Suction)* Position 16, 17 Ports-Rear Adaptor (Triple Unit) = No Rear Adaptor 1 = Suction Port 1-5/8 UN-2B SAE O-ring Port; Pressure Port 7/8 14 UNF-2B SAE O-ring Port (Common Suction Port) 2 = Suction Port 1-5/16 12 SAE UN-2B O-ring Port; Pressure Port 7/8 14 UNF-2B SAE O-ring Port (Isolated Suction)* Position 18, 19 Ports, Sizes and Location - Backplate 1 = Plain: Suction Port 1-5/16 12 UN-2B SAE O RING Port Size; Pressure Port 7/8 14 UNF-2B SAE O RING Port Side Ports 2 = Plain: Suction Port 1-5/16 12 UN-2B SAE O RING Port Size; Pressure Port 7/8 14 UNF-2B SAE O RING Port Rear Ports 3 = Plain: Suction Port 1-1/16 12 UN-2B SAE O RING Port Size; Pressure Port 7/8 14 UNF-2B SAE O RING Port Side Ports 4 = Plain: Suction Port 1-1/16 12 UN-2B SAE O RING Port Size; Pressure Port 7/8 14 UNF-2B SAE O RING Port Rear Ports 14 = Plain: Suction Port 1-5/16 12 UN-2B SAE O RING Port Size (Plugged); Pressure Port 7/8 14 UNF- 2B SAE O RING Port Side Ports, used with position 14 and 15 1 and 16 and = Plain: Suction Port 1-5/16 12 UN-2B SAE O RING Port Size (Plugged); Pressure Port 7/8 14 UNF-2B SAE O RING Port Rear Ports, used with position 14 and 15 1 and 16 and 17 1 Position 2, 21 Priority Flow Divider Setting (lpm [GPM]) = No Flow Setting Position 22, 23 Relief Valve Full Flow Setting (bar [PSI]) = No Relief Valve Setting Position 24 Mounting Features (Front) A = (2-Bolt A) SAE Flange Series 82-3 Position 25 Auxiliary Mounting Features = No Rear Mounting Position 26 Test Data = Generic Position 27,28 Special Features = No Special Features Position 29, 3 Paint CD = Blue Primer Per Spec 29-13CD Position 31 Identification = Standard Position 32 Design Code A = A B = B Longer Slip Fit Key (recommended) *Isolated suction keeps oil separate, i.e. it doesn t allow front pump oil to mix with rear pump oil. 21

22 26 Series Pumps Side-Load Application Max. Allowable Operating Pressures GEAR DRIVE CW Rotation CCW Rotation Y 45 Pump Inlet 45 Pump Inlet Pitch Dia. PULLEY DRIVE 5 Pump Inlet CW Rotation CCW Rotation Pump Inlet Ideal positions shown. Side load is acceptable within 9 of either side of the ideal position. Charts are based on 1% slack side tension. Max. speed per catalog. Max. operating pressure shown..4/.5 CID.58/.66 CID.84 CID Y (inches) Y (inches) Y (inches) Pulley φ Gear Pitch φ Pulley φ Gear Pitch φ Pulley φ Gear Pitch φ CID 1.2 CID 1.37 CID Y (inches) Y (inches) Y (inches) Pulley φ Gear Pitch φ Pulley φ Gear Pitch φ Pulley φ Gear Pitch φ /1.54 CID 1.69 CID 1.77/1.87 CID Y (inches) Y (inches) Y (inches) Pulley φ Gear Pitch φ = Not Recommended 22 Pulley φ Gear Pitch φ Pulley φ Gear Pitch φ

23 Notes 23

24 Eaton Corporation is a global manufacturer of highly engineered products that serve industrial, vehicle, construction, commercial and semiconductor markets. Principal products include electrical power distribution and control equipment, truck drivetrain systems, engine components, hydraulic products, ion implanters and a wide variety of controls. Headquartered in Cleveland, the company has 49, employees and 143 manufacturing sites in 26 countries around the world. Sales for 1997 were $7.6 billion. Information contained in this catalog is accurate as of the publication date and is subject to change without notice. Performance values are typical values. Customers are responsible for selecting products for their applications using normal engineering methods. Eaton Corporation Hydraulics Division Highway 5 Eden Prairie, MN Eaton Ltd. Hydraulics Division Glenrothes, Fife Scotland, KY7 4NW Telephone +44 () Fax: +44 () Eaton GmbH Hydraulics Division Am Schimmersfeld Ratingen, Germany Telephone: +49 () Fax: +49 () ACCREDITED BY THE DUTCH COUNCIL FOR CERTIFICATION Reg. No. 24 ISO-91 CERTIFICATED FIRM DET NORSKE VERITAS INDUSTRY BV, THE NETHERLANDS Quality System Certified Products in this catalog are manufactured in an ISO-91-certified site. Form No Copyright Eaton Corporation, 1995, 1996, 1997 All Rights Reserved Printed in USA