WHITE MOTORS. Features. Max Torque lb-in (Nm) Cont. Inter. *Stall

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1 Due to its case drain design, the Series motor is an excellent medium size motor for applications with high duty cycles or frequent direction reversals. The case drain design produces a number of benefits including reduction of pressure on the shaft seal and the ability to provide a cooling loop for the system. The case flow also lubricates the vital drive components, extending motor life. An internal drain option is also available. A laminated manifold and three zone-orbiting valve are used to produce higher overall efficiencies and more usable power. A steel faced seal in the orbiting valve also lessens the risk of the seal extruding or melting, which is possible in competitive designs. Features Heavy-Duty Drive Link is most durable in class and receives case flow lubrication for reduced wear and increased life. Three-Zone Orbiting Valve precisely meters oil to produce exceptional volumetric efficiency. Standard Case Drain increases shaft seal life by reducing pressure on seal. Rubber Energized Steel Face Seal does not extrude or melt under high pressure or high temperature. Three Bearing Options allow load-carrying capabilities of motor to be matched to application Displacement in 3 /rev (cm 3 /rev) 12.4 (204) 15.9 (261) 18.3 (300) 21.2 (348) 22.8 (375) 28.3 (465) 32.7 (536) 45.6 (748) Max Speed RPM Cont. Inter Max Flow GPM (LPM) Cont. Inter. 25 (95) 30 (114) 25 (95) 30 (114) 25 (95) 30 (114) 25 (95) 30 (114) 25 (95) 30 (114) 25 (95) 30 (114) 25 (95) 30 (114) 25 (95) 30 (114) Max Torque lb-in (Nm) Cont. Inter. *Stall 4900 (552) 5700 (642) 4055 (458) 6590 (742) 7600 (856) 5495 (621) 7450 (839) 8600 (968) 6685 (755) 8600 (968) 9800 (1103) 7035 (795) 9600 (1081) (1239) 8135 (919) 9800 (1100) (1312) 8735 (987) 9150 (1030) (1272) 8120 (918) 9200 (1036) (1385) 8055 (910) Pressure PSI( -Bar) Cont. Inter. Peak 3000 (207) 3500 (241) 4000 (276) 3000 (207) 3500 (241) 4000 (276) 3000 (207) 3500 (241) 4000 (276) 3000 (207) 3500 (241) 4000 (276) 3000 (207) 3500 (241) 4000 (276) 2500 (172) 3000 (207) 3500 (241) 2000 (138) 2500 (172) 3000 (207) 1500 (103) 2000 (138) 2500 (172) CROSS HYAULICS PTY LTD SECTION 10.67

2 in. 3/r (204cc) Areas within white represent maximum motor efficiencies. Note: Max Flow and Max Pressure must not occur simultaneously in. 3/r (261cc) Torque, lb-in (Nm) Speed, RPM Note: Performance data is typical. Performance of production units varies slightly from one motor to another. CROSS HYAULICS PTY LTD SECTION 10.68

3 in. 3/r (300cc) Areas within white represent maximum motor efficiencies. Note: Max Flow and Max Pressure must not occur simultaneously in. 3/r (348cc) Torque, lb-in (Nm) Speed, RPM Note: Performance data is typical. Performance of production units varies slightly from one motor to another. CROSS HYAULICS PTY LTD SECTION 10.69

4 in. 3/r (375cc) Areas within white represent maximum motor efficiencies. Note: Max Flow and Max Pressure must not occur simultaneously in. 3/r (465cc) Torque, lb-in (Nm) Speed, RPM Note: Performance data is typical. Performance of production units varies slightly from one motor to another. CROSS HYAULICS PTY LTD SECTION 10.70

5 in. 3/r (536cc) Areas within white represent maximum motor efficiencies. Note: Max Flow and Max Pressure must not occur simultaneously in. 3/r (748cc) Torque, lb-in (Nm) Speed, RPM Note: Performance data is typical. Performance of production units varies slightly from one motor to another. CROSS HYAULICS PTY LTD SECTION 10.71

6 Housings Wheel Mount / SAE A W2 4-Hole with End Ports W8 4-Hole with Side Ports 5.21 (132) Max..524 (13.3).514 (13.1) (44.5) (44.3).25 (6) 1.47 (37) Dim. R.21 (5) 5.45 (138) Max (82.6) (82.5) 3.23 (82) (127.0) (126.9) 45 o O (147.6) Dim. R is on page A2 4-Hole with End Ports A8 4-Hole with Side Ports 2.80 (71) Max. Dim. S 22.5 o 2.61 (66) Max..120 (3.0).110 (2.8).70 (18) 5.35 (136) Max (82.6) (82.5) O (106.3).522 (13.3).514 (13.1).12 (3).06 (2) Seal Groove Detail A4 4-Hole with End Ports A9 4-Hole with Side Ports 2.80 (71) Max. Dim. S 22.5 o 2.61 (66) Max..120 (3.0).110 (2.8).70 (18) 5.35 (136) Max (82.6) (82.5) O (106.3).522 (13.3).514 (13.1).12 (3).06 (2) Seal Groove Detail Dim. S is on page CROSS HYAULICS PTY LTD SECTION 10.72

7 Technical Allowable Bearing And Shaft Loads Bearing Curve: The bearing curve represents allowable bearing loads based on ISO 281 bearing capacity for an L 10 life of 2000 hours at 100 RPM. Radial loads for speeds other than 100 RPM may be calculated using the multiplication factor table located on page Shaft Curve: The shaft curve represents a 3:1 safety factor based on a tensile strength of 330 kpsi. Length and Weight Tables Wheel Mount mm 9,000 4,000 Wheel Mount Disp. Dim. R Weight in (mm) lbs (kg) 8,000 7,000 6,000 5,000 4,000 1,000 lbs. 445 DaN 1,000 lbs. 445 DaN 3,500 3,000 2,500 2, (166) 29.6 (13,4) (171) 30.6 (13,9) (174) 32.2 (14,6) (188) 34.7 (15,7) (180) 33.4 (15,2) (188) 34.7 (15,7) (194) 35.8 (16,2) (212) 39.1 (17,7) 3,000 2,000 1,000 lbs Bearing Shaft 1,500 1, DaN motor weights vary +/- 2 lb. (.9 kg) depending upon motor configuration. Subtract.11 in. (3 mm) from dimension for motors using 0 or 5 endcover in. A Style A Style , mm 4,000 Disp. Dim. S Weight in (mm) lbs (kg) 8,000 7,000 6,000 5,000 4,000 1,000 lbs. 445 DaN 1,000 lbs. 445 DaN 3,500 3,000 2,500 2, (208) 35.0 (15,9) (213) 36.0 (16,3) (216) 36.6 (16,6) (230) 39.2 (17,8) (222) 37.8 (17,1) (230) 39.2 (17,8) (236) 40.3 (18,3) (254) 43.5 (19,7) 3,000 1,500 motor weights vary +/- 2 lb. (.9 kg) depending upon motor configuration. 2,000 Shaft 1,000 Subtract.11 in. (3 mm) from dimension for motors using 0 or 5 endcover. 1,000 lbs Bearing 500 DaN in. CROSS HYAULICS PTY LTD SECTION 10.73

8 Shafts 10 1 Inch Straight 5,880 lb-in 660 Nm 12 25mm Straight 5,617 lb-in 635 Nm.251 (6.8).250 (6.4).251 (6.8).250 (6.4).70 (18) Min..18 (5) Dim T 1.59 (40) (25.9).970 (24.6).314 (8).313 (8).2766 (7).2756 (7).63 (16) Min..212 (5.4) Dim T 1.83 (46.5) (29.7) (30.9) (28.2) (28.0).999 (25.4).998 (25.3) 1.08 (27.4) 1.07 (27.2).984 (25).983 (25) 5/16-18 UNC 30 o M8 x o 10,600 lb-in /4 Inch Straight 21 1,200 Nm 32mm Straight.314 (8.0).313 (8.0).276 (7.0).274 (7.0).83 (21) Min..32 (8) Dim T 2.14 (54) 1.90 (48) (37.5) (36.2).394 (10.0).392 (9.9).276 (7.0).274 (7.0).63 (16) Min. Dim T 2.14 (54) 1.90 (48).46 (12) 10,600 lb-in 1,200 Nm (32.6) (31.4) (35.3) (35.0) (31.8) (31.7) (34.8) (34.5) (32.0) (31.9) 1.33 (34) Wire Ring 5/8-18 UNF.06 (2) Dia. Wire Ring 15 o 1.33 (34) Wire Ring M8 x (2) Dia. Wire Ring 20 o 10,6000 lb-in /4 Inch Tapered (8.0).313 (7.9).276 (7.0).274 (7.0).75 (19) 1.37 (35).20 (5).17 (4) Dim T 1,200 Nm.957 (24.3).907 (23.0).245 (6.2).243 (6.1) 6-B Spline 1.00 (25) Min. Spline.70 (18) Min 10,600 lb-in 1,200 Nm Dim T 1.59 (40).15 (4) (31.8) (31.7).996 (25.3).992 (25.2) UNEF Note: A slotted nut is standard on this shaft. 1:8 Taper 15 o O.810 (20.6) B Spline (SAE J499 Std.) 5/16-18 UNC 30 o Tooth Spline 1.33 (34) Wire Ring 14 Tooth 12/24 Pitch Std. ANSI B Spline.83 (21) (31.7) (31.6) 5/8-18 UNF Dim T 1.90 (48) 1.60 (41) Min. Spline.06 (2) Dia. Wire Ring 10,6000 lb-in 1,200 Nm 15 o Dim T Shaft Shaft Lengths SAE 'A' in (mm) Setback in (mm) (50) 3.60 (91) (56) 3.84 (98) (66) 4.22 (107) (61) 4.05 (103) (61) 4.06 (103) (50) 3.60 (91) (61) 4.05 (103) Shaft lengths vary +/-.030 in. (.8mm) CROSS HYAULICS PTY LTD SECTION 10.74

9 Porting Side Ports 5 1-1/16 O-ring with 7/16 Drain 2 3/4 BSP.F with 1/4 Drain 4.97 (126) B B 25 o 25 o 25 o 25 o A A 1.43 (36) Auxillary Views View A - Case Drain Port View A 12 o D - 10 Series/2-way Valve Cavity (7/8-14 UNF-2B) 38 o View A B B.91 (23) 25 o 25 o View B - Valve Cavity 25 o 25 o View A A A D 1.10 (28) View A 12 o 38.5 o View B 38.5 o View B The 5 & 2 porting options can be ordered with an internal drain and/or a relief valve cavity /16 O-Ring with 7/16 Drain 3/4 BSP.F with 1/4 Drain The 6 & 7 porting options can be ordered with an internal drain. View A 1.20 (30) 13 o.90 (23) A A 4.55 (116).90 (23) B 5.10 (130) B 2.73 (69) 38.5 o View A CROSS HYAULICS PTY LTD SECTION 10.75

10 Porting End Ports 1 7/8 O-Ring with 7/16 Drain 4.97 (126).90 (23).90 (23).44 (11) B.44 (11) B.13 (3) A 1.46 (37) A 1.46 (37).39 (10).26 (7).39 (10) 38.5 o View A Auxillary Views View A - Case Drain Port D - 10 Series/2-way Valve Cavity (7/8-14 UNF-2B) View B View B 12 o D D 12 o.91 (23).44 (11) B.44 (11) B View B - Relief Valve Cavity 1.46 (37).13 (3) A 1.46 (37) A 1.10 (28).90 (23).39 (10).26 (7).90 (23).39 (10) View A The 1 porting option can be ordered with an internal drain and/or relief valve cavity. Rotation Selection A B A B CROSS HYAULICS PTY LTD SECTION 10.76

11 600 DISPLACEMENT HOUSINGS SHAFT OPTIONS Displacement Housings Shafts Options in 3 /r 204 cc 15.9 in3/r 261 cc 18.3 in 3 /r 300 cc 21.2 in 3 /r 348 cc 22.8 in 3 /r 374 cc 28.3 in 3 /r 464 cc 32.7 in 3 /r 536 cc 45.6 in 3 /r 748 cc W2 W8 A2 A8 A4 A Hole End Ports 4-Hole Side Ports 4-Hole End Ports 4-Hole Side Ports 6-Hole End Ports 6-Hole Side Ports PORTS Side Ports Radial Ports 1-1/16-12 O-ring Radial Ports 3/4-14 BSP.F Parallel Ports 1-1/16-12 O-ring Parallel Ports 3/4-14 BSP.F End Ports 7/8-14 O-ring NOTE: To complete the 3 digit housing code, a housing and port option must be entered. A side port housing option must use side port connections, and a end port housing option must use end port connections. (Example: W82 = A 4-Hole radial ported motor with 3/4" BSP.F threading) 6-B Spline 1-1/4" Tapered 1-1/4" Straight 14 Tooth Spline 1" Straight 25mm Straight 32mm Straight O F D X P *R *R1 *R2 *R3 **Z **Z1 **Z2 **Z3 **Z4 **Z5 **Z6 No Options Free Turn Internal Drain (Low Pressure) Solid Nut Lock Nut Valve Cavity 1000 PSI (69 Bar) Relief Valve Installed 2000 PSI (138 Bar) Relief Valve Installed 3000 PSI (207 Bar) Relief Valve Installed 50 Pulse Sensor w/4pin Connector 50 Pulse Sensor w/male (tower) Hsg. Weather Pack Connector 30 Pulse Sensor w/4pin Connector 30 Pulse Sensor w/male (tower) Hsg. Weather Pack Connector 30 Pulse Sensor w/female (shroud) Hsg. Weather Pack Connector 100 Pulse Sensor w/4pin Connector 100 Pulse Sensor w/male (tower) Hsg. Weather Pack Connector * Available with 1, 2, and 5 ports only. ** Available with A2 or A8 housing and must use MD shafts on page 16. CROSS HYAULICS PTY LTD SECTION 10.77

12 A4 A9 6-Hole with Rear Ports 6-Hole with Side Ports Housings SAE A 2.80 (71)Max (66)Max o.120 (3.0).110 (2.8).70 (18) Dim U 5.35 (136) Max (82.6) (82.5) 4.99 (127).522 (13.3).514 (13.1) O (106.3) Allowable Bearing And Shaft Loads 12(3).06 (2) Seal Groove Detail Bearing Curve: The bearing curve represents allowable bearing loads based on ISO 281 bearing capacity for an L 10 life of 2000 hours at 100 RPM. Radial loads for speeds other than 100 RPM may be calculated using the multiplication factor table located on page Shaft Curve: The shaft curve represents a 3:1 safety factor based on a tensile strength of 330 kpsi. Technical Length and Weight Tables A Style A Style , mm Disp. Dim. U Weight in (mm) lbs (kg) 9,000 8,000 7,000 6,000 5,000 4,000 3,000 2,000 1,000 lbs Bearing 1,000 lbs. 445 DaN 1,000 lbs. 445 DaN Shaft in. 4,500 4,000 3,500 3,000 2,500 2,000 1,500 1, DaN (238) 35.6 (16,2) (242) 37.2 (16,9) (256) 39.7 (18,0) (248) 38.4 (17,4) (256) 39.7 (18,0) (262) 40.8 (18,5) (280) 44.1 (20,0) motor weights vary +/- 2 lb. (.9 kg) depending upon motor configuration. Subtract.11 in. (3 mm) from dimension for motors using 0 or 5 endcover. CROSS HYAULICS PTY LTD SECTION 10.78

13 Shafts 5,850 lb-in 660 Nm 15 1 Inch Straight Ext /4 Inch Straight Ext. 10,600 lb-in 1,200 Nm.251 (6.4).250 (6.4).251 (6.4).250 (6.4).70 (18) Min..18 (5) *1.98 (50) 1.59 (40) (25.9).970 (24.6).314 (8.0).313 (8.0).276 (7.0).274 (7.0).83 (21) Min..32 (8) *2.44 (62) 2.14 (54) 1.90 (48) (37.5) (36.2) (28.2) (28.0).999 (25.4).998 (25.3) (35.3) (35.0) (31.8) (31.7) 5/16-18 UNC 30 o 1.33 (34) (Wire Ring) 5/8-18 UNF.06 (2) Dia. Wire Ring 15 o 08 32mm Straight 10,600 lb-in 1,200 Nm /4 Inch Tapered 10,600 lb-in 1,200 Nm.394 (10.0).392 (10.0).276 (7.0).274 (7.0).63 (16) Min. *2.44 (62) 2.14 (54) 1.90 (48).46 (12) (32.6) (31.4).314 (8.0).313 (8.0).276 (7.0).274 (7.0) *2.60 (66).75 (19) 1.37 (35).20 (5).17 (4).957 (24.3).907 (23.0) (34.8) (34.5) (32.0) (31.9).15 (4) (31.8) (31.7) 1.33 (34) (Wire Ring) M8x (2) Dia. Wire Ring 20 o UNEF 1:8 Taper 15 o 03 6-B Spline 10,600 lb-in 1,200 Nm Tooth Spline 10,600 lb-in 1,200 Nm.245 (6.2).243 (6.1) 1.00 (25) Min. Spline.70 (18) Min. *1.98 (50) 1.59 (40) 1.33 (34) (Wire Ring).83 (21) *2.42 (61) 1.90 (48) 1.60 (41) Min. Spline.996 (25.3).992 (25.2) (31.7) (31.6) O B Spline (SAE J499 Std.) 5/16-18 UNC 30 o 14 Tooth 12/24 Pitch Std. ANSI B Spline 5/8-18 UNF.06 (2) Dia. Wire Ring 15 o *Shaft lengths very +/ in. (.8mm) CROSS HYAULICS PTY LTD SECTION 10.79

14 620 DISPLACEMENT HOUSINGS SHAFT OPTIONS Displacement Housings Shafts Options in 3 /r 261 cc 18.3 in3/r 300 cc 21.2 in 3 /r 348 cc 22.8 in 3 /r 374 cc 28.3 in 3 /r 464 cc 32.7 in 3 /r 536 cc 45.6 in 3 /r 748 cc A4 A Hole End Ports 6-Hole Side Ports PORTS Side Ports Radial Ports 1-1/16-12 O-ring Radial Ports 3/4-14 BSP.F Parallel Ports 1-1/16-12 O-ring Parallel Ports 3/4-14 BSP.F End Ports 7/8-14 O-ring NOTE: To complete the 3 digit housing code, a housing and port option must be entered. A side port housing option must use side port connections, and a end port housing option must use end port connections. (Example: A92 = A 6-Hole radial ported motor with 3/4" BSP.F threading) 1-1/4" Tapered Ext. 1-1/4" Straight Ext. 14 Tooth Spline Ext. 32mm Straight Ext. 6-B Spline Ext. 1" Straight Ext. O F D X P *R *R1 *R2 *R3 No Options Free Turn Internal Drain (Low Pressure) Solid Nut Lock Nut Valve Cavity 1000 PSI (69 Bar) Relief Valve Installed 2000 PSI (138 Bar) Relief Valve Installed 3000 PSI (207 Bar) Relief Valve Installed * Available with 1, 2, and 5 ports only CROSS HYAULICS PTY LTD SECTION 10.80

15 Housings Wheel Mount W2 W8 4-Hole with End Ports 4-Hole with Side Ports 5.21 (132) Max..524 (13,3).514 (13,1) (45,3) (45,1) 2.07 (53).25 (6) Dim. V 5.21 (132) Max (126,9) (126,8) 45 o Ø (147,6) Dimension V is on page Shafts /2 Inch Straight 10,600 lb-in 1200 Nm /2 Inch Tapered 10,600 lb-in 1200 Nm.376 (9,6).375 (9,5).376 (9,6).375 (9,5).75 (19) Min..40 (10) *4.67 (119) 2.67 (68) (38,9) (37,6).314 (8,0).313 (8,0).276 (7,0).274 (7,0).75 (19).20 (5).17 (4) *4.57 (116) 1.72 (44) (31,8) (30,5) (42,4) (42,1) (38,1) (38,0).15 (3,8) (38,1) (38,1) 1.58 (40) (Wire Ring) 3/8-16 UNC.08 (2) Dia. Wire Ring UNEF Note: A slotted nut is standard on this shaft. 1:8 Taper 28 35mm Tapered 10,600 lb-in 1200 Nm *Shaft lengths may vary by ±.030 in. (,8mm).314 (8,6).313 (8,0).276 (7,0).274 (7,0).12 (3).19 (5) *4.20 (107) 1.42 (36).87 (22).900 (22,9).890 (22,6).15 (3,8) (35,0) (34,5) M24 x 1.5 Thread 1:10 Taper CROSS HYAULICS PTY LTD SECTION 10.81

16 Technical Allowable Bearing And Shaft Loads Bearing Curve: The bearing curve represents allowable bearing loads based on ISO 281 bearing capacity for an L 10 life of 2000 hours at 100 RPM. Radial loads for speeds other than 100 RPM may be calculated using the multiplication factor table located on page Shaft Curve: The shaft curve represents a 3:1 safety factor based on a tensile strength of 330 kpsi. Length and Weight Tables Wheel Mount Wheel Mount 14,000 13,000 12,000 11,000 10,000 9,000 8,000 7,000 6,000 5,000 4,000 3,000 2,000 1,000 lbs mm 1,000 lbs 445 DaN 1,000 lbs 445 DaN Bearing Shaft 6,000 5,500 5,000 4,500 4,000 3,500 3,000 2,500 2,000 1,500 1, DaN in. Disp. Dim. V Weight in (mm) lbs (kg) (207) 39.5 (17,9) (210) 40.1 (18,2) (224) 42.6 (19,3) (217) 41.2 (18,7) (224) 42.6 (19,3) (230) 43.7 (19,8) (248) 47.0 (21,3) motor weights vary +/- 2 lb. (.9kg) depending upon motor configuration. Subtract.11 in. (3mm) from dimension for motors using 0 or 5 endcover. CROSS HYAULICS PTY LTD SECTION 10.82

17 630 DISPLACEMENT HOUSINGS SHAFT OPTIONS Displacement Housings Shafts Options in 3 /r 261 cc 18.3 in3/r 300 cc 21.2 in 3 /r 348 cc 22.8 in 3 /r 374 cc 28.3 in 3 /r 464 cc 32.7 in 3 /r 536 cc 45.6 in 3 /r 748 cc W2 W Hole End Ports 4-Hole Side Ports PORTS Side Ports Radial Ports 1-1/16-12 O-ring Radial Ports 3/4-14 BSP.F Parallel Ports 1-1/16-12 O-ring Parallel Ports 3/4-14 BSP.F End Ports 7/8-14 O-ring NOTE: To complete the 3 digit housing code, a housing and port option must be entered. A side port housing option must use side port connections, and a end port housing option must use end port connections. (Example: W82 = A 4-Hole radial ported motor with 3/4" BSP.F threading) /2" Tapered 1-1/2" Straight 35mm Tapered O F D X *R *R1 *R2 No Options Free Turn Internal Drain (Low Pressure) Solid Nut Valve Cavity 1000 PSI (69 Bar) Relief Valve Installed 2000 PSI (138 Bar) Relief Valve Installed 3000 PSI *R3 (207 Bar) Relief Valve Installed * Available with 1, 2, and 5 ports only CROSS HYAULICS PTY LTD SECTION 10.83

18 Housings W2 4-Hole with End Ports W8 4-Hole with Side Ports 5.53 (140) Max (184) Max (135) Max. (2) SAE J51 4b 7/16-20 Release Ports.45 (11) Min. Deep 7.67 (195) Max (85) Min (42) 1.04 (26) Min (195) Max (184 ) Max. Dim. AA.320 (8.1).309 (7.9).314 (8.6).313 (8.0) 10,600 lb-in 1200 Nm /2 Inch Tapered.276 (7.0).274 (7.0).75 (19).20 (5).17 (4) *7.14 (181) 1.87 (47) (31.8) (30.5) 1.00 (25).50 (13).15 (4) (38.1) (38.0) O8.250 (209.6) 5.00 (127) (180.7) (180.6).658 (16.7).648 (16.5) UNEF Slotted Hex Nut Torque To Ft. Lbs. Note: A slotted nut is standard on this shaft. 1:8 Taper Length and Weight Tables Disp. Dim. AA in (mm) Note: Shaft lengths vary +/-.030 (.8mm) Weight lbs (kg) (107) 58.4 (26.5) (112) 59.4 (26.9) (115) 60.0 (27.2) (129) 62.5 (28.3) (122) 61.1 (27.7) (129) 62.5 (28.3) (135) 63.6 (28.8) (153) 66.9 (30.3) motor weights vary +/- 2 lb (.9kg) depending upon motor configuration. Subtract.11 in. (3mm) from dimension for motors using 0 or 5 endcover. CAUTION: It is vital that all operating recommendations on page be followed. Failure to do so could result in injury or death. CROSS HYAULICS PTY LTD SECTION 10.84

19 Operating Recommendations CAUTION! - White Hydraulics motors/brakes are intended to operate as static or parking brakes. System circuitry must be designed to bring the load to a stop before applying the brake. CAUTION! - Because it is possible for some large displacement motors to overpower the brake, it is critical that the maximum system pressure be limited for these applications. Failure to do so could cause serious injury or death. When choosing a motor/ brake for an application, consult the performance chart for the series and displacement chosen for the application to verify that the maximum operating pressure of the system will not allow the motor to produce more torque than the maximum rating of the brake. Also, it is vital that the system relief be set low enough to ensure that the motor is not able to overpower the brake. To ensure proper operation of the brake, case drain back pressure must be maintained at 500 psi or less. Case drain back pressure above 500 psi can result in erratic operation of the brake. To avoid potential problems with the operation of the brake, a separate case drain line is recommended. Use of the internal drain option is not recommended due to the possibility of return line pressure spikes. A simple schematic of a system utilizing a motor/brake is shown in Figure A below. Although maximum brake release pressure may be used for an application, a 500 psi pressure reducing valve is recommended to promote maximum life for the brake release piston seals. To achieve proper brake release operation, it is necessary to bleed the release line and brake release cavity once all connections are made. To facilitate this operation, all motor/brake feature two release ports. One or both of these ports may be used to release the brake in the unit. Motor/brakes should be configured so that the release ports are near the top of the unit in the installed position. Once all system connections are made, one release port must be opened to atmosphere and the brake release line carefully charged with fluid until all air is removed from the line and motor/brake release cavity. When this has been accomplished the port plug or secondary release line must be reinstalled. In the event of a pump or battery failure, an external pressure source may be connected to the brake release bleed port to release the brake, allowing the machine to be moved. Typical motor/brake schematic Figure A CROSS HYAULICS PTY LTD SECTION 10.85

20 Technical Allowable Bearing And Shaft Loads Bearing Curve: The bearing curve represents allowable bearing loads based on ISO 281 bearing capacity for an L 10 life of 2000 hours at 100 RPM. Radial loads for speeds other than 100 RPM may be calculated using the multiplication factor table. Shaft Curve: The shaft curve represents a 3:1 safety factor based on a tensile strength of 330 kpsi mm 12,000 Operating Specifications Rated brake torque:...14,000 lb-in (1,582 Nm) Initial release pressure psi (19 bar) Full release pressure psi (33 bar) Maximum release pressure...3,000 psi (207 bar) Release volume cu.in. (13-16 cc) 11,000 10,000 9,000 8,000 7,000 6,000 5,000 4,000 3,000 2,000 1,000 lbs Bearing 1,000 lbs. 445 DaN 1,000 lbs. 445 DaN Shaft in. 4,500 4,000 3,500 3,000 2,500 2,000 1,500 1, DaN Bearing Load Multiplication Factor Table RPM Multiplication Factor DISPLACEMENT HOUSINGS SHAFT OPTIONS Displacement Housings Shafts Options in 3 /r 204 cc 15.9 in 3 /r 261 cc 18.3 in3/r 300 cc 21.2 in 3 /r 348 cc 22.8 in 3 /r 374 cc 28.3 in3/r 464 cc 32.7 in 3 /r 536 cc 45.6 in 3 /r 748 cc W2 W Hole End Ports 4-Hole Side Ports PORTS Side Ports Radial Ports 1-1/16" O-Ring Radial Ports 3/4" BSP.F Parallel Ports 1-1/16" O-Ring Parallel Ports 3/4" BSP.F End Ports 7/8" O-Ring /2" Tapered NOTE: To complete the 3 digit housing code, a housing and port option must be entered. A side port housing option must use side port connections, and a end port housing option must use end port connections. (Example: W82 = A 4-Hole radial ported motor with 3/4" BSP.F threading) O F X *R No Options Free Turn Solid Nut Valve Cavity 1000 PSI *R1 (69 Bar) Relief Valve Installed 2000 PSI *R2 (138 Bar) Relief Valve Installed 3000 PSI *R3 (207 Bar) Relief Valve Installed * Available with 1, 2, and 5 ports only CROSS HYAULICS PTY LTD SECTION 10.86